diff options
| author | Brian Paul <brianp@vmware.com> | 2009-06-26 17:07:07 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-06-26 17:07:07 -0600 |
| commit | a18e209edb5348eb167e9d7184597031bbbbe622 (patch) | |
| tree | 60fcd288119f335cccdc2f15981c9b315d332e64 | |
| parent | 4fdc6ad41b843109febbe9596dde87f676a8b0e9 (diff) | |
| parent | 418987ff05f892d3c33ed4ddbe856c496b05ea14 (diff) | |
Merge branch 'mesa_7_5_branch'
Conflicts:
Makefile
src/gallium/drivers/softpipe/sp_screen.c
src/mesa/main/version.h
24 files changed, 1483 insertions, 321 deletions
diff --git a/docs/devinfo.html b/docs/devinfo.html index 3cebf5f36db..0fb816749ed 100644 --- a/docs/devinfo.html +++ b/docs/devinfo.html @@ -123,20 +123,21 @@ These are the instructions for making a new Mesa release. <H3>Get latest source files</H3> <p> -Use "cvs update -dAP " to get the latest Mesa files from CVS. +Use git to get the latest Mesa files from the git repository, from whatever +branch is relevant. </p> <H3>Verify and update version info</H3> <p> -Create/edit the docs/RELNOTES-X.Y file to document what's new in the release. -Add the new RELNOTES-X.Y file to <a href="relnotes.html">relnotes.html</a>. -Update the docs/VERSIONS file too. +Create/edit the docs/relnotes-x.y.html file to document what's new in the release. +Add the new relnotes-x.y.html file to <a href="relnotes.html">relnotes.html</a>. </p> <p> -Edit the MESA_MAJOR, MESA_MINOR and MESA_TINY version numbers in +Update the MESA_MAJOR, MESA_MINOR and MESA_TINY version numbers in configs/default. +Also update the VERSION line in the top-level Makefile. </p> <p> @@ -144,27 +145,24 @@ Make sure the values in src/mesa/main/version.h are correct. </p> <p> -Edit the top-level Makefile and verify that DIRECTORY, LIB_NAME and -DEMO_NAME are correct. -</p> - -<p> Update the docs/news.html file and docs/download.html files. </p> <p> -Check in all updates to CVS. +Check in all updates to git. </p> <p> -Tag the CVS files with the release name (in the form <b>mesa_X_Y</b>). +Tag the files with the release name (in the form <b>mesa_X_Y</b>) +with: <code>git tag -a mesa_X_Y</code> +Then: <code>git push origin mesa_X_Y</code> </p> <H3>Make the tarballs</H3> <p> Make a symbolic link from $(DIRECTORY) to 'Mesa'. For example, -ln -s Mesa Mesa-6.3 +<code>ln -s Mesa Mesa-7.5</code> This is needed in order to make a correct tar file in the next step. </p> @@ -177,7 +175,7 @@ Make the distribution files. From inside the Mesa directory: <p> After the tarballs are created, the md5 checksums for the files will be computed. -Add them to the docs/news.html file. +Add them to the docs/relnotes-X.Y.html file. </p> <p> @@ -192,8 +190,20 @@ uploading the tarballs. </p> <p> +Basically, to upload the tarball files with: +<br> +<code> +rsync -avP ssh Mesa*-X.Y.* USERNAME@frs.sourceforge.net:uploads/ +</code> +</p> + +<p> Update the web site by copying the docs/ directory's files to -/home/users/b/br/brianp/mesa-www/htdocs/ +/home/users/b/br/brianp/mesa-www/htdocs/ with: +<br> +<code> +sftp USERNAME,mesa3d@web.sourceforge.net +</code> </p> <p> diff --git a/docs/news.html b/docs/news.html index 8cf2f91dd03..ee4a86c2a21 100644 --- a/docs/news.html +++ b/docs/news.html @@ -11,6 +11,21 @@ <H1>News</H1> +<h2>June 23, 2009</h2> +<p> +<a href="relnotes-7.4.4.html">Mesa 7.4.4</a> is released. +This is a stable release that fixes a regression in the i915/i965 drivers +that slipped into the 7.4.3 release. +</p> + + +<h2>June 19, 2009</h2> +<p> +<a href="relnotes-7.4.3.html">Mesa 7.4.3</a> is released. +This is a stable release fixing bugs since the 7.4.2 release. +</p> + + <h2>May 15, 2009</h2> <p> <a href="relnotes-7.4.2.html">Mesa 7.4.2</a> is released. diff --git a/docs/relnotes-7.4.3.html b/docs/relnotes-7.4.3.html new file mode 100644 index 00000000000..35b5dccbb0a --- /dev/null +++ b/docs/relnotes-7.4.3.html @@ -0,0 +1,79 @@ +<HTML> + +<TITLE>Mesa Release Notes</TITLE> + +<head><link rel="stylesheet" type="text/css" href="mesa.css"></head> + +<BODY> + +<body bgcolor="#eeeeee"> + +<H1>Mesa 7.4.3 Release Notes / 19 June 2009</H1> + +<p> +Mesa 7.4.3 is a stable development release fixing bugs since the 7.4.2 release. +</p> +<p> +Mesa 7.4.3 implements the OpenGL 2.1 API, but the version reported by +glGetString(GL_VERSION) depends on the particular driver being used. +Some drivers don't support all the features required in OpenGL 2.1. +</p> +<p> +See the <a href="install.html">Compiling/Installing page</a> for prerequisites +for DRI hardware acceleration. +</p> + + +<h2>MD5 checksums</h2> +<pre> +34c5a6c47ed51f31c4fa36e269831352 MesaLib-7.4.3.tar.gz +70a983ba3deaa8bd63b18bbab283f698 MesaLib-7.4.3.tar.bz2 +34f21b3205b271d575030aa98a2dda51 MesaLib-7.4.3.zip +56752b7adede212e6097afb10d0c0d59 MesaDemos-7.4.3.tar.gz +8ffa51c4833b1e298300a005e2d7ca2a MesaDemos-7.4.3.tar.bz2 +0037d24d41400d6fb9800ae55b8c863f MesaDemos-7.4.3.zip +20e24f6692c0c90e7e3b220f79c4108d MesaGLUT-7.4.3.tar.gz +03a4beeef74fc5ef0b1d6d04710e5a8a MesaGLUT-7.4.3.tar.bz2 +273788230adbdb9d57371309adedcf5f MesaGLUT-7.4.3.zip +</pre> + + +<h2>Bug fixes</h2> +<ul> +<li>Fixed texture object reference counting bug (bug 21756) +<li>Allow depth/stencil textures to be attached to GL_STENCIL_ATTACHMENT point + (SF bug 2793846) +<li>Added missing glGet case for GL_VERTEX_ARRAY_BINDING_APPLE +<li>Fixed some OSMesa build issues +<li>Fixed a vertex buffer object crash +<li>Fixed broken glTexImage3D() when image type = GL_BITMAP +<li>Fixed some GLSL preprocessor bugs +<li>Fixed framebuffer mem leak in i945/i965 DRI drivers +<li>Fixed texture coordinate repeat bug in swrast (bug 21872) +<li>Fixed incorrect viewport clamping (lower bound is zero, not one) +<li>GLX fix for glean's makeCurrent test case +</ul> + + + +<h2>Driver Status</h2> + +<pre> +Driver Status +---------------------- ---------------------- +DRI drivers varies with the driver +XMesa/GLX (on Xlib) implements OpenGL 2.1 +OSMesa (off-screen) implements OpenGL 2.1 +Windows/Win32 implements OpenGL 2.1 +Glide (3dfx Voodoo1/2) implements OpenGL 1.3 +SVGA unsupported +Wind River UGL unsupported +DJGPP unsupported +GGI unsupported +BeOS unsupported +Allegro unsupported +D3D unsupported +</pre> + +</body> +</html> diff --git a/docs/relnotes-7.4.4.html b/docs/relnotes-7.4.4.html new file mode 100644 index 00000000000..2a34568a7e4 --- /dev/null +++ b/docs/relnotes-7.4.4.html @@ -0,0 +1,68 @@ +<HTML> + +<TITLE>Mesa Release Notes</TITLE> + +<head><link rel="stylesheet" type="text/css" href="mesa.css"></head> + +<BODY> + +<body bgcolor="#eeeeee"> + +<H1>Mesa 7.4.4 Release Notes / 23 June 2009</H1> + +<p> +Mesa 7.4.4 is a stable development release fixing bugs since the 7.4.3 release. +</p> +<p> +Mesa 7.4.4 implements the OpenGL 2.1 API, but the version reported by +glGetString(GL_VERSION) depends on the particular driver being used. +Some drivers don't support all the features required in OpenGL 2.1. +</p> +<p> +See the <a href="install.html">Compiling/Installing page</a> for prerequisites +for DRI hardware acceleration. +</p> + + +<h2>MD5 checksums</h2> +<pre> +0b56fe5a88ab0c3c5b2da5068f63f416 MesaLib-7.4.4.tar.gz +b66528d314c574dccbe0ed963cac5e93 MesaLib-7.4.4.tar.bz2 +2818076f3ba23fa87fdfe4602a637a18 MesaLib-7.4.4.zip +3e77b208386c47b18165bce5ae317e2c MesaDemos-7.4.4.tar.gz +628142ec9a54cd28cc027e6ce26cff47 MesaDemos-7.4.4.tar.bz2 +d08a30d30ab7174859aa709cba6c726d MesaDemos-7.4.4.zip +e6e91ba16e274d40cf3a97ad3218af01 MesaGLUT-7.4.4.tar.gz +e14bbb52517e8121b31f1387515365ab MesaGLUT-7.4.4.tar.bz2 +f10ed20469753c2b3d68c99854f80fd4 MesaGLUT-7.4.4.zip +</pre> + + +<h2>Bug fixes</h2> +<ul> +<li>Fixed i965/i915 segfault in screen destruction (bug 22408) +</ul> + + + +<h2>Driver Status</h2> + +<pre> +Driver Status +---------------------- ---------------------- +DRI drivers varies with the driver +XMesa/GLX (on Xlib) implements OpenGL 2.1 +OSMesa (off-screen) implements OpenGL 2.1 +Windows/Win32 implements OpenGL 2.1 +Glide (3dfx Voodoo1/2) implements OpenGL 1.3 +SVGA unsupported +Wind River UGL unsupported +DJGPP unsupported +GGI unsupported +BeOS unsupported +Allegro unsupported +D3D unsupported +</pre> + +</body> +</html> diff --git a/docs/relnotes-7.5.html b/docs/relnotes-7.5.html index 663626cb05a..045692113df 100644 --- a/docs/relnotes-7.5.html +++ b/docs/relnotes-7.5.html @@ -68,6 +68,8 @@ including GL_ATI_separate_stencil, GL_EXT_stencil_two_side and OpenGL 2.0 <li>GL_EXT_texture_swizzle extension (software drivers, i965 driver) <li>Updated SPARC assembly optimizations (David S. Miller) <li>Initial support for separate compilation units in GLSL compiler. +<li>Increased max number of generic GLSL varying variables to 16 (formerly 8). +<li>GLSL linker now detects when too many varying variables are used. </ul> @@ -75,6 +77,7 @@ including GL_ATI_separate_stencil, GL_EXT_stencil_two_side and OpenGL 2.0 <ul> <li>Lots of i965 driver bug fixes <li>Fixed some GLSL preprocessor bugs +<li>GLSL: continue inside of a for-loop didn't work </ul> diff --git a/docs/relnotes.html b/docs/relnotes.html index ad5b74bad3c..35a4c7385f7 100644 --- a/docs/relnotes.html +++ b/docs/relnotes.html @@ -9,19 +9,14 @@ <H1>Release Notes</H1> <p> -Mesa uses an even/odd version number scheme like the Linux kernel. -Odd numbered versions (such as 6.5) designate new developmental releases. -Even numbered versions (such as 6.4) designate stable releases. -</p> - - -<p> The release notes summarize what's new or changed in each Mesa release. </p> <UL> <LI><A HREF="relnotes-7.6.html">7.6 release notes</A> <LI><A HREF="relnotes-7.5.html">7.5 release notes</A> +<LI><A HREF="relnotes-7.4.4.html">7.4.4 release notes</A> +<LI><A HREF="relnotes-7.4.3.html">7.4.3 release notes</A> <LI><A HREF="relnotes-7.4.2.html">7.4.2 release notes</A> <LI><A HREF="relnotes-7.4.1.html">7.4.1 release notes</A> <LI><A HREF="relnotes-7.4.html">7.4 release notes</A> diff --git a/progs/demos/fslight.c b/progs/demos/fslight.c index 41a13cc9f46..f0d76a4a06f 100644 --- a/progs/demos/fslight.c +++ b/progs/demos/fslight.c @@ -583,10 +583,14 @@ ParseOptions(int argc, char *argv[]) int i; for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-fs") == 0) { - FragProgFile = argv[i+1]; + FragProgFile = argv[++i]; } else if (strcmp(argv[i], "-vs") == 0) { - VertProgFile = argv[i+1]; + VertProgFile = argv[++i]; + } + else { + fprintf(stderr, "unknown option %s\n", argv[i]); + break; } } } diff --git a/scons/dxsdk.py b/scons/dxsdk.py new file mode 100644 index 00000000000..a369e1da10c --- /dev/null +++ b/scons/dxsdk.py @@ -0,0 +1,66 @@ +"""dxsdk + +Tool-specific initialization for Microsoft DirectX SDK + +""" + +# +# Copyright (c) 2009 VMware, Inc. +# +# Permission is hereby granted, free of charge, to any person obtaining +# a copy of this software and associated documentation files (the +# "Software"), to deal in the Software without restriction, including +# without limitation the rights to use, copy, modify, merge, publish, +# distribute, sublicense, and/or sell copies of the Software, and to +# permit persons to whom the Software is furnished to do so, subject to +# the following conditions: +# +# The above copyright notice and this permission notice shall be included +# in all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY +# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +# + +import os +import os.path + +import SCons.Errors +import SCons.Util + + +def get_dxsdk_root(env): + try: + return os.environ['DXSDK_DIR'] + except KeyError: + return None + +def get_dxsdk_paths(env): + dxsdk_root = get_dxsdk_root(env) + if dxsdk_root is None: + raise SCons.Errors.InternalError, "DirectX SDK not found" + + if env['machine'] in ('generic', 'x86'): + target_cpu = 'x86' + elif env['machine'] == 'x86_64': + target_cpu = 'x64' + else: + raise SCons.Errors.InternalError, "Unsupported target machine" + include_dir = 'Include' + + env.Append(CPPDEFINES = [('HAVE_DXSDK', '1')]) + env.Prepend(CPPPATH = [os.path.join(dxsdk_root, 'Include')]) + env.Prepend(LIBPATH = [os.path.join(dxsdk_root, 'Lib', target_cpu)]) + +def generate(env): + get_dxsdk_paths(env) + +def exists(env): + return get_dxsdk_root(env) is not None + +# vim:set ts=4 sw=4 et: diff --git a/scons/gallium.py b/scons/gallium.py index 6e924da303b..aed813f0279 100644 --- a/scons/gallium.py +++ b/scons/gallium.py @@ -319,74 +319,78 @@ def generate(env): env.Append(CPPDEFINES = cppdefines) # C compiler options - cflags = [] + cflags = [] # C + cxxflags = [] # C++ + ccflags = [] # C & C++ if gcc: if debug: - cflags += ['-O0', '-g3'] + ccflags += ['-O0', '-g3'] elif env['toolchain'] == 'crossmingw': - cflags += ['-O0', '-g3'] # mingw 4.2.1 optimizer is broken + ccflags += ['-O0', '-g3'] # mingw 4.2.1 optimizer is broken else: - cflags += ['-O3', '-g3'] + ccflags += ['-O3', '-g3'] if env['profile']: - cflags += ['-pg'] + ccflags += ['-pg'] if env['machine'] == 'x86': - cflags += [ + ccflags += [ '-m32', #'-march=pentium4', '-mmmx', '-msse', '-msse2', # enable SIMD intrinsics #'-mfpmath=sse', ] if env['machine'] == 'x86_64': - cflags += ['-m64'] + ccflags += ['-m64'] # See also: # - http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html - cflags += [ - '-Werror=declaration-after-statement', + ccflags += [ '-Wall', - '-Wmissing-prototypes', '-Wmissing-field-initializers', '-Wpointer-arith', '-Wno-long-long', '-ffast-math', - '-std=gnu99', '-fmessage-length=0', # be nice to Eclipse ] + cflags += [ + '-Werror=declaration-after-statement', + '-Wmissing-prototypes', + '-std=gnu99', + ] if msvc: # See also: # - http://msdn.microsoft.com/en-us/library/19z1t1wy.aspx # - cl /? if debug: - cflags += [ + ccflags += [ '/Od', # disable optimizations '/Oi', # enable intrinsic functions '/Oy-', # disable frame pointer omission '/GL-', # disable whole program optimization ] else: - cflags += [ + ccflags += [ '/O2', # optimize for speed #'/fp:fast', # fast floating point ] if env['profile']: - cflags += [ + ccflags += [ '/Gh', # enable _penter hook function '/GH', # enable _pexit hook function ] - cflags += [ + ccflags += [ '/W3', # warning level #'/Wp64', # enable 64 bit porting warnings ] if env['machine'] == 'x86': - cflags += [ + ccflags += [ #'/QIfist', # Suppress _ftol #'/arch:SSE2', # use the SSE2 instructions ] if platform == 'windows': - cflags += [ + ccflags += [ # TODO ] if platform == 'winddk': - cflags += [ + ccflags += [ '/Zl', # omit default library name in .OBJ '/Zp8', # 8bytes struct member alignment '/Gy', # separate functions for linker @@ -405,7 +409,7 @@ def generate(env): ] if platform == 'wince': # See also C:\WINCE600\public\common\oak\misc\makefile.def - cflags += [ + ccflags += [ '/Zl', # omit default library name in .OBJ '/GF', # enable read-only string pooling '/GR-', # disable C++ RTTI @@ -422,8 +426,9 @@ def generate(env): # See http://scons.tigris.org/issues/show_bug.cgi?id=1656 env.EnsureSConsVersion(0, 98, 0) env['PDB'] = '${TARGET.base}.pdb' + env.Append(CCFLAGS = ccflags) env.Append(CFLAGS = cflags) - env.Append(CXXFLAGS = cflags) + env.Append(CXXFLAGS = cxxflags) if env['platform'] == 'windows' and msvc: # Choose the appropriate MSVC CRT diff --git a/scons/generic.py b/scons/generic.py index 29ddf76d6ff..a9c2244a74f 100644 --- a/scons/generic.py +++ b/scons/generic.py @@ -416,16 +416,18 @@ def generate(env): # See also: # - http://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html ccflags += [ - '-Werror=declaration-after-statement', '-Wall', - '-Wmissing-prototypes', '-Wmissing-field-initializers', '-Wpointer-arith', '-Wno-long-long', '-ffast-math', - '-std=gnu99', '-fmessage-length=0', # be nice to Eclipse ] + cflags += [ + '-Werror=declaration-after-statement', + '-Wmissing-prototypes', + '-std=gnu99', + ] if msvc: # See also: # - http://msdn.microsoft.com/en-us/library/19z1t1wy.aspx diff --git a/src/gallium/drivers/cell/ppu/cell_screen.c b/src/gallium/drivers/cell/ppu/cell_screen.c index 512d85d3525..bd48ce70050 100644 --- a/src/gallium/drivers/cell/ppu/cell_screen.c +++ b/src/gallium/drivers/cell/ppu/cell_screen.c @@ -86,6 +86,8 @@ cell_get_param(struct pipe_screen *screen, int param) return 1; /* XXX not really true */ case PIPE_CAP_TEXTURE_MIRROR_CLAMP: return 0; /* XXX to do */ + case PIPE_CAP_TGSI_CONT_SUPPORTED: + return 1; default: return 0; } diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c index 692deeb8fd3..be76f1d4135 100644 --- a/src/gallium/drivers/softpipe/sp_screen.c +++ b/src/gallium/drivers/softpipe/sp_screen.c @@ -87,6 +87,8 @@ softpipe_get_param(struct pipe_screen *screen, int param) return 8; /* max 128x128x128 */ case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS: return 13; /* max 4Kx4K */ + case PIPE_CAP_TGSI_CONT_SUPPORTED: + return 1; default: return 0; } diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h index 9924046cb2f..96030e788db 100644 --- a/src/gallium/include/pipe/p_defines.h +++ b/src/gallium/include/pipe/p_defines.h @@ -302,6 +302,7 @@ enum pipe_transfer_usage { #define PIPE_CAP_TEXTURE_MIRROR_CLAMP 24 #define PIPE_CAP_TEXTURE_MIRROR_REPEAT 25 #define PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS 26 +#define PIPE_CAP_TGSI_CONT_SUPPORTED 27 /** diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c index a28836a7d8a..21d13b862b6 100644 --- a/src/mesa/drivers/dri/intel/intel_context.c +++ b/src/mesa/drivers/dri/intel/intel_context.c @@ -71,6 +71,8 @@ int INTEL_DEBUG = (0); #define DRIVER_DATE_GEM "GEM " DRIVER_DATE +static void intel_flush(GLcontext *ctx, GLboolean needs_mi_flush); + static const GLubyte * intelGetString(GLcontext * ctx, GLenum name) { @@ -397,6 +399,15 @@ intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h) return; if (!intel->internal_viewport_call && ctx->DrawBuffer->Name == 0) { + /* If we're rendering to the fake front buffer, make sure all the pending + * drawing has landed on the real front buffer. Otherwise when we + * eventually get to DRI2GetBuffersWithFormat the stale real front + * buffer contents will get copied to the new fake front buffer. + */ + if (intel->is_front_buffer_rendering) { + intel_flush(ctx, GL_FALSE); + } + intel_update_renderbuffers(driContext, driContext->driDrawablePriv); if (driContext->driDrawablePriv != driContext->driReadablePriv) intel_update_renderbuffers(driContext, driContext->driReadablePriv); diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index d1614af7364..408b65d308e 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -2049,6 +2049,7 @@ struct gl_shader_state struct gl_shader_program *CurrentProgram; /**< The user-bound program */ /** Driver-selectable options: */ GLboolean EmitHighLevelInstructions; /**< IF/ELSE/ENDIF vs. BRA, etc. */ + GLboolean EmitContReturn; /**< Emit CONT/RET opcodes? */ GLboolean EmitCondCodes; /**< Use condition codes? */ GLboolean EmitComments; /**< Annotated instructions */ void *MemPool; diff --git a/src/mesa/shader/shader_api.c b/src/mesa/shader/shader_api.c index a8390d30942..648fbc186bb 100644 --- a/src/mesa/shader/shader_api.c +++ b/src/mesa/shader/shader_api.c @@ -402,6 +402,7 @@ _mesa_init_shader_state(GLcontext * ctx) * are generated by the GLSL compiler. */ ctx->Shader.EmitHighLevelInstructions = GL_TRUE; + ctx->Shader.EmitContReturn = GL_TRUE; ctx->Shader.EmitCondCodes = GL_FALSE; ctx->Shader.EmitComments = GL_FALSE; ctx->Shader.Flags = get_shader_flags(); diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c index 6d693c9027a..24e99523869 100644 --- a/src/mesa/shader/slang/slang_codegen.c +++ b/src/mesa/shader/slang/slang_codegen.c @@ -75,6 +75,11 @@ const GLuint MAX_FOR_LOOP_UNROLL_COMPLEXITY = 256; static slang_ir_node * _slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper); +static void +slang_substitute(slang_assemble_ctx *A, slang_operation *oper, + GLuint substCount, slang_variable **substOld, + slang_operation **substNew, GLboolean isLHS); + /** * Retrieves type information about an operation. @@ -326,6 +331,17 @@ sampler_to_texture_index(const slang_type_specifier_type type) } +/** helper to build a SLANG_OPER_IDENTIFIER node */ +static void +slang_operation_identifier(slang_operation *oper, + slang_assemble_ctx *A, + const char *name) +{ + oper->type = SLANG_OPER_IDENTIFIER; + oper->a_id = slang_atom_pool_atom(A->atoms, name); +} + + #define SWIZZLE_ZWWW MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W, SWIZZLE_W, SWIZZLE_W) /** @@ -429,6 +445,56 @@ _slang_output_index(const char *name, GLenum target) } +/** + * Called when we begin code/IR generation for a new while/do/for loop. + */ +static void +push_loop(slang_assemble_ctx *A, slang_operation *loopOper, slang_ir_node *loopIR) +{ + A->LoopOperStack[A->LoopDepth] = loopOper; + A->LoopIRStack[A->LoopDepth] = loopIR; + A->LoopDepth++; +} + + +/** + * Called when we end code/IR generation for a new while/do/for loop. + */ +static void +pop_loop(slang_assemble_ctx *A) +{ + assert(A->LoopDepth > 0); + A->LoopDepth--; +} + + +/** + * Return pointer to slang_operation for the loop we're currently inside, + * or NULL if not in a loop. + */ +static const slang_operation * +current_loop_oper(const slang_assemble_ctx *A) +{ + if (A->LoopDepth > 0) + return A->LoopOperStack[A->LoopDepth - 1]; + else + return NULL; +} + + +/** + * Return pointer to slang_ir_node for the loop we're currently inside, + * or NULL if not in a loop. + */ +static slang_ir_node * +current_loop_ir(const slang_assemble_ctx *A) +{ + if (A->LoopDepth > 0) + return A->LoopIRStack[A->LoopDepth - 1]; + else + return NULL; +} + /**********************************************************************/ @@ -636,7 +702,7 @@ new_break(slang_ir_node *loopNode) assert(loopNode); assert(loopNode->Opcode == IR_LOOP); if (n) { - /* insert this node at head of linked list */ + /* insert this node at head of linked list of cont/break instructions */ n->List = loopNode->List; loopNode->List = n; } @@ -648,14 +714,15 @@ new_break(slang_ir_node *loopNode) * Make new IR_BREAK_IF_TRUE. */ static slang_ir_node * -new_break_if_true(slang_ir_node *loopNode, slang_ir_node *cond) +new_break_if_true(slang_assemble_ctx *A, slang_ir_node *cond) { + slang_ir_node *loopNode = current_loop_ir(A); slang_ir_node *n; assert(loopNode); assert(loopNode->Opcode == IR_LOOP); n = new_node1(IR_BREAK_IF_TRUE, cond); if (n) { - /* insert this node at head of linked list */ + /* insert this node at head of linked list of cont/break instructions */ n->List = loopNode->List; loopNode->List = n; } @@ -667,14 +734,16 @@ new_break_if_true(slang_ir_node *loopNode, slang_ir_node *cond) * Make new IR_CONT_IF_TRUE node. */ static slang_ir_node * -new_cont_if_true(slang_ir_node *loopNode, slang_ir_node *cond) +new_cont_if_true(slang_assemble_ctx *A, slang_ir_node *cond) { + slang_ir_node *loopNode = current_loop_ir(A); slang_ir_node *n; assert(loopNode); assert(loopNode->Opcode == IR_LOOP); n = new_node1(IR_CONT_IF_TRUE, cond); if (n) { - /* insert this node at head of linked list */ + n->Parent = loopNode; /* pointer to containing loop */ + /* insert this node at head of linked list of cont/break instructions */ n->List = loopNode->List; loopNode->List = n; } @@ -749,6 +818,7 @@ _slang_is_noop(const slang_operation *oper) /** * Recursively search tree for a node of the given type. */ +#if 0 static slang_operation * _slang_find_node_type(slang_operation *oper, slang_operation_type type) { @@ -762,13 +832,14 @@ _slang_find_node_type(slang_operation *oper, slang_operation_type type) } return NULL; } +#endif /** * Count the number of operations of the given time rooted at 'oper'. */ static GLuint -_slang_count_node_type(slang_operation *oper, slang_operation_type type) +_slang_count_node_type(const slang_operation *oper, slang_operation_type type) { GLuint i, count = 0; if (oper->type == type) { @@ -822,6 +893,37 @@ _slang_is_tail_return(const slang_operation *oper) } +/** + * Generate a variable declaration opeartion. + * I.e.: generate AST code for "bool flag = false;" + */ +static void +slang_generate_declaration(slang_assemble_ctx *A, + slang_variable_scope *scope, + slang_operation *decl, + slang_type_specifier_type type, + const char *name, + GLint initValue) +{ + slang_variable *var; + + assert(type == SLANG_SPEC_BOOL || + type == SLANG_SPEC_INT); + + decl->type = SLANG_OPER_VARIABLE_DECL; + + var = slang_variable_scope_grow(scope); + + slang_fully_specified_type_construct(&var->type); + + var->type.specifier.type = type; + var->a_name = slang_atom_pool_atom(A->atoms, name); + decl->a_id = var->a_name; + var->initializer = slang_operation_new(1); + slang_operation_literal_bool(var->initializer, initValue); +} + + static void slang_resolve_variable(slang_operation *oper) { @@ -832,6 +934,159 @@ slang_resolve_variable(slang_operation *oper) /** + * Rewrite AST code for "return expression;". + * + * We return values from functions by assinging the returned value to + * the hidden __retVal variable which is an extra 'out' parameter we add + * to the function signature. + * This code basically converts "return expr;" into "__retVal = expr; return;" + * + * \return the new AST code. + */ +static slang_operation * +gen_return_with_expression(slang_assemble_ctx *A, slang_operation *oper) +{ + slang_operation *blockOper, *assignOper; + + assert(oper->type == SLANG_OPER_RETURN); + + if (A->CurFunction->header.type.specifier.type == SLANG_SPEC_VOID) { + slang_info_log_error(A->log, "illegal return expression"); + return NULL; + } + + blockOper = slang_operation_new(1); + blockOper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE; + blockOper->locals->outer_scope = oper->locals->outer_scope; + slang_operation_add_children(blockOper, 2); + + if (A->UseReturnFlag) { + /* Emit: + * { + * if (__notRetFlag) + * __retVal = expr; + * __notRetFlag = 0; + * } + */ + { + slang_operation *ifOper = slang_oper_child(blockOper, 0); + ifOper->type = SLANG_OPER_IF; + slang_operation_add_children(ifOper, 3); + { + slang_operation *cond = slang_oper_child(ifOper, 0); + cond->type = SLANG_OPER_IDENTIFIER; + cond->a_id = slang_atom_pool_atom(A->atoms, "__notRetFlag"); + } + { + slang_operation *elseOper = slang_oper_child(ifOper, 2); + elseOper->type = SLANG_OPER_VOID; + } + assignOper = slang_oper_child(ifOper, 1); + } + { + slang_operation *setOper = slang_oper_child(blockOper, 1); + setOper->type = SLANG_OPER_ASSIGN; + slang_operation_add_children(setOper, 2); + { + slang_operation *lhs = slang_oper_child(setOper, 0); + lhs->type = SLANG_OPER_IDENTIFIER; + lhs->a_id = slang_atom_pool_atom(A->atoms, "__notRetFlag"); + } + { + slang_operation *rhs = slang_oper_child(setOper, 1); + slang_operation_literal_bool(rhs, GL_FALSE); + } + } + } + else { + /* Emit: + * { + * __retVal = expr; + * return_inlined; + * } + */ + assignOper = slang_oper_child(blockOper, 0); + { + slang_operation *returnOper = slang_oper_child(blockOper, 1); + returnOper->type = SLANG_OPER_RETURN_INLINED; + assert(returnOper->num_children == 0); + } + } + + /* __retVal = expression; */ + assignOper->type = SLANG_OPER_ASSIGN; + slang_operation_add_children(assignOper, 2); + { + slang_operation *lhs = slang_oper_child(assignOper, 0); + lhs->type = SLANG_OPER_IDENTIFIER; + lhs->a_id = slang_atom_pool_atom(A->atoms, "__retVal"); + } + { + slang_operation *rhs = slang_oper_child(assignOper, 1); + slang_operation_copy(rhs, &oper->children[0]); + } + + ///blockOper->locals->outer_scope = oper->locals->outer_scope; + + /*slang_print_tree(blockOper, 0);*/ + + return blockOper; +} + + +/** + * Rewrite AST code for "return;" (no expression). + */ +static slang_operation * +gen_return_without_expression(slang_assemble_ctx *A, slang_operation *oper) +{ + slang_operation *newRet; + + assert(oper->type == SLANG_OPER_RETURN); + + if (A->CurFunction->header.type.specifier.type != SLANG_SPEC_VOID) { + slang_info_log_error(A->log, "return statement requires an expression"); + return NULL; + } + + if (A->UseReturnFlag) { + /* Emit: + * __notRetFlag = 0; + */ + { + newRet = slang_operation_new(1); + newRet->locals->outer_scope = oper->locals->outer_scope; + newRet->type = SLANG_OPER_ASSIGN; + slang_operation_add_children(newRet, 2); + { + slang_operation *lhs = slang_oper_child(newRet, 0); + lhs->type = SLANG_OPER_IDENTIFIER; + lhs->a_id = slang_atom_pool_atom(A->atoms, "__notRetFlag"); + } + { + slang_operation *rhs = slang_oper_child(newRet, 1); + slang_operation_literal_bool(rhs, GL_FALSE); + } + } + } + else { + /* Emit: + * return_inlined; + */ + newRet = slang_operation_new(1); + newRet->locals->outer_scope = oper->locals->outer_scope; + newRet->type = SLANG_OPER_RETURN_INLINED; + } + + /*slang_print_tree(newRet, 0);*/ + + return newRet; +} + + + + +/** * Replace particular variables (SLANG_OPER_IDENTIFIER) with new expressions. */ static void @@ -866,7 +1121,8 @@ slang_substitute(slang_assemble_ctx *A, slang_operation *oper, GLuint i; v = _slang_variable_locate(oper->locals, id, GL_TRUE); if (!v) { - _mesa_problem(NULL, "var %s not found!\n", (char *) oper->a_id); + if (_mesa_strcmp((char *) oper->a_id, "__notRetFlag")) + _mesa_problem(NULL, "var %s not found!\n", (char *) oper->a_id); return; } @@ -896,62 +1152,24 @@ slang_substitute(slang_assemble_ctx *A, slang_operation *oper, break; case SLANG_OPER_RETURN: - /* do return replacement here too */ - assert(oper->num_children == 0 || oper->num_children == 1); - if (oper->num_children == 1 && !_slang_is_noop(&oper->children[0])) { - /* replace: - * return expr; - * with: - * __retVal = expr; - * return; - * then do substitutions on the assignment. - */ - slang_operation *blockOper, *assignOper, *returnOper; + { + slang_operation *newReturn; + /* generate new 'return' code' */ + if (slang_oper_child(oper, 0)->type == SLANG_OPER_VOID) + newReturn = gen_return_without_expression(A, oper); + else + newReturn = gen_return_with_expression(A, oper); - /* check if function actually has a return type */ - assert(A->CurFunction); - if (A->CurFunction->header.type.specifier.type == SLANG_SPEC_VOID) { - slang_info_log_error(A->log, "illegal return expression"); + if (!newReturn) return; - } - - blockOper = slang_operation_new(1); - blockOper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE; - blockOper->num_children = 2; - blockOper->locals->outer_scope = oper->locals->outer_scope; - blockOper->children = slang_operation_new(2); - assignOper = blockOper->children + 0; - returnOper = blockOper->children + 1; - - assignOper->type = SLANG_OPER_ASSIGN; - assignOper->num_children = 2; - assignOper->locals->outer_scope = blockOper->locals; - assignOper->children = slang_operation_new(2); - assignOper->children[0].type = SLANG_OPER_IDENTIFIER; - assignOper->children[0].a_id = slang_atom_pool_atom(A->atoms, "__retVal"); - assignOper->children[0].locals->outer_scope = assignOper->locals; - - slang_operation_copy(&assignOper->children[1], - &oper->children[0]); - - returnOper->type = SLANG_OPER_RETURN; /* return w/ no value */ - assert(returnOper->num_children == 0); - /* do substitutions on the "__retVal = expr" sub-tree */ - slang_substitute(A, assignOper, + /* do substitutions on the new 'return' code */ + slang_substitute(A, newReturn, substCount, substOld, substNew, GL_FALSE); - /* install new code */ - slang_operation_copy(oper, blockOper); - slang_operation_destruct(blockOper); - } - else { - /* check if return value was expected */ - assert(A->CurFunction); - if (A->CurFunction->header.type.specifier.type != SLANG_SPEC_VOID) { - slang_info_log_error(A->log, "return statement requires an expression"); - return; - } + /* install new 'return' code */ + slang_operation_copy(oper, newReturn); + slang_operation_destruct(newReturn); } break; @@ -1346,12 +1564,74 @@ slang_inline_function_call(slang_assemble_ctx * A, slang_function *fun, } +/** + * Insert declaration for "bool __notRetFlag" in given block operation. + * This is used when we can't emit "early" return statements in subroutines. + */ +static void +declare_return_flag(slang_assemble_ctx *A, slang_operation *oper) +{ + slang_operation *decl; + + assert(oper->type == SLANG_OPER_BLOCK_NEW_SCOPE || + oper->type == SLANG_OPER_SEQUENCE); + + decl = slang_operation_insert_child(oper, 1); + + slang_generate_declaration(A, oper->locals, decl, + SLANG_SPEC_BOOL, "__notRetFlag", GL_TRUE); + + /*slang_print_tree(oper, 0);*/ +} + + +/** + * Recursively replace instances of the old node type with the new type. + */ +static void +replace_node_type(slang_operation *oper, slang_operation_type oldType, + slang_operation_type newType) +{ + GLuint i; + + if (oper->type == oldType) + oper->type = newType; + + for (i = 0; i < slang_oper_num_children(oper); i++) { + replace_node_type(slang_oper_child(oper, i), oldType, newType); + } +} + + + +/** + * Test if the given function body has an "early return". That is, there's + * a 'return' statement that's not the very last instruction in the body. + */ +static GLboolean +has_early_return(const slang_operation *funcBody) +{ + GLuint retCount = _slang_count_node_type(funcBody, SLANG_OPER_RETURN); + if (retCount == 0) + return GL_FALSE; + else if (retCount == 1 && _slang_is_tail_return(funcBody)) + return GL_FALSE; + else + return GL_TRUE; +} + + +/** + * Emit IR code for a function call. This does one of two things: + * 1. Inline the function's code + * 2. Create an IR for the function's body and create a real call to it. + */ static slang_ir_node * _slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun, slang_operation *oper, slang_operation *dest) { slang_ir_node *n; - slang_operation *inlined; + slang_operation *instance; slang_label *prevFuncEndLabel; char name[200]; @@ -1360,9 +1640,14 @@ _slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun, A->curFuncEndLabel = _slang_label_new(name); assert(A->curFuncEndLabel); + /* + * 'instance' is basically a copy of the function's body with various + * transformations. + */ + if (slang_is_asm_function(fun) && !dest) { /* assemble assembly function - tree style */ - inlined = slang_inline_asm_function(A, fun, oper); + instance = slang_inline_asm_function(A, fun, oper); } else { /* non-assembly function */ @@ -1371,65 +1656,82 @@ _slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun, * 1. insert the inline code * 2. Generate a call to the "inline" code as a subroutine */ + const GLboolean earlyReturn = has_early_return(fun->body); + if (earlyReturn && !A->EmitContReturn) { + A->UseReturnFlag = GL_TRUE; + } - slang_operation *ret = NULL; - - inlined = slang_inline_function_call(A, fun, oper, dest); - if (!inlined) + instance = slang_inline_function_call(A, fun, oper, dest); + if (!instance) return NULL; - ret = _slang_find_node_type(inlined, SLANG_OPER_RETURN); - if (ret) { - /* check if this is a "tail" return */ - if (_slang_count_node_type(inlined, SLANG_OPER_RETURN) == 1 && - _slang_is_tail_return(inlined)) { - /* The only RETURN is the last stmt in the function, no-op it - * and inline the function body. + if (earlyReturn) { + /* The function we're calling has one or more 'return' statements + * that prevent us from inlining the function's code. + * + * In this case, change the function's body type from + * SLANG_OPER_BLOCK_NEW_SCOPE to SLANG_OPER_NON_INLINED_CALL. + * During code emit this will result in a true subroutine call. + * + * Also, convert SLANG_OPER_RETURN_INLINED nodes to SLANG_OPER_RETURN. + */ + slang_operation *callOper; + + assert(instance->type == SLANG_OPER_BLOCK_NEW_SCOPE || + instance->type == SLANG_OPER_SEQUENCE); + + if (_slang_function_has_return_value(fun) && !dest) { + assert(instance->children[0].type == SLANG_OPER_VARIABLE_DECL); + assert(instance->children[2].type == SLANG_OPER_IDENTIFIER); + callOper = &instance->children[1]; + } + else { + callOper = instance; + } + + if (A->UseReturnFlag) { + /* Early returns not supported. Create a _returnFlag variable + * that's set upon 'return' and tested elsewhere to no-op any + * remaining instructions in the subroutine. */ - ret->type = SLANG_OPER_NONE; + assert(callOper->type == SLANG_OPER_BLOCK_NEW_SCOPE || + callOper->type == SLANG_OPER_SEQUENCE); + declare_return_flag(A, callOper); } else { - slang_operation *callOper; - /* The function we're calling has one or more 'return' statements. - * So, we can't truly inline this function because we need to - * implement 'return' with RET (and CAL). - * Nevertheless, we performed "inlining" to make a new instance - * of the function body to deal with static register allocation. - * - * XXX check if there's one 'return' and if it's the very last - * statement in the function - we can optimize that case. + /* We can emit real 'return' statements. If we generated any + * 'inline return' statements during function instantiation, + * change them back to regular 'return' statements. */ - assert(inlined->type == SLANG_OPER_BLOCK_NEW_SCOPE || - inlined->type == SLANG_OPER_SEQUENCE); - - if (_slang_function_has_return_value(fun) && !dest) { - assert(inlined->children[0].type == SLANG_OPER_VARIABLE_DECL); - assert(inlined->children[2].type == SLANG_OPER_IDENTIFIER); - callOper = &inlined->children[1]; - } - else { - callOper = inlined; - } - callOper->type = SLANG_OPER_NON_INLINED_CALL; - callOper->fun = fun; - callOper->label = _slang_label_new_unique((char*) fun->header.a_name); + replace_node_type(instance, SLANG_OPER_RETURN_INLINED, + SLANG_OPER_RETURN); } + + callOper->type = SLANG_OPER_NON_INLINED_CALL; + callOper->fun = fun; + callOper->label = _slang_label_new_unique((char*) fun->header.a_name); + } + else { + /* If there are any 'return' statements remaining, they're at the + * very end of the function and can effectively become no-ops. + */ + replace_node_type(instance, SLANG_OPER_RETURN_INLINED, + SLANG_OPER_VOID); } } - if (!inlined) + if (!instance) return NULL; - /* Replace the function call with the inlined block (or new CALL stmt) */ + /* Replace the function call with the instance block (or new CALL stmt) */ slang_operation_destruct(oper); - *oper = *inlined; - _slang_free(inlined); + *oper = *instance; + _slang_free(instance); #if 0 - assert(inlined->locals); - printf("*** Inlined code for call to %s:\n", - (char*) fun->header.a_name); + assert(instance->locals); + printf("*** Inlined code for call to %s:\n", (char*) fun->header.a_name); slang_print_tree(oper, 10); printf("\n"); #endif @@ -1445,6 +1747,8 @@ _slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun, n->Comment = _slang_strdup(s); } + A->UseReturnFlag = GL_FALSE; + return n; } @@ -2337,19 +2641,252 @@ _slang_is_boolean(slang_assemble_ctx *A, slang_operation *oper) /** + * Check if a loop contains a 'continue' statement. + * Stop looking if we find a nested loop. + */ +static GLboolean +_slang_loop_contains_continue(const slang_operation *oper) +{ + switch (oper->type) { + case SLANG_OPER_CONTINUE: + return GL_TRUE; + case SLANG_OPER_FOR: + case SLANG_OPER_DO: + case SLANG_OPER_WHILE: + /* stop upon finding a nested loop */ + return GL_FALSE; + default: + /* recurse */ + { + GLuint i; + for (i = 0; i < oper->num_children; i++) { + const slang_operation *child = slang_oper_child_const(oper, i); + if (_slang_loop_contains_continue(child)) + return GL_TRUE; + } + } + return GL_FALSE; + } +} + + +/** + * Check if a loop contains a 'continue' or 'break' statement. + * Stop looking if we find a nested loop. + */ +static GLboolean +_slang_loop_contains_continue_or_break(const slang_operation *oper) +{ + switch (oper->type) { + case SLANG_OPER_CONTINUE: + case SLANG_OPER_BREAK: + return GL_TRUE; + case SLANG_OPER_FOR: + case SLANG_OPER_DO: + case SLANG_OPER_WHILE: + /* stop upon finding a nested loop */ + return GL_FALSE; + default: + /* recurse */ + { + GLuint i; + for (i = 0; i < oper->num_children; i++) { + const slang_operation *child = slang_oper_child_const(oper, i); + if (_slang_loop_contains_continue_or_break(child)) + return GL_TRUE; + } + } + return GL_FALSE; + } +} + + +/** + * Replace 'break' and 'continue' statements inside a do and while loops. + * This is a recursive helper function used by + * _slang_gen_do/while_without_continue(). + */ +static void +replace_break_and_cont(slang_assemble_ctx *A, slang_operation *oper) +{ + switch (oper->type) { + case SLANG_OPER_BREAK: + /* replace 'break' with "_notBreakFlag = false; break" */ + { + slang_operation *block = oper; + block->type = SLANG_OPER_BLOCK_NEW_SCOPE; + slang_operation_add_children(block, 2); + { + slang_operation *assign = slang_oper_child(block, 0); + assign->type = SLANG_OPER_ASSIGN; + slang_operation_add_children(assign, 2); + { + slang_operation *lhs = slang_oper_child(assign, 0); + slang_operation_identifier(lhs, A, "_notBreakFlag"); + } + { + slang_operation *rhs = slang_oper_child(assign, 1); + slang_operation_literal_bool(rhs, GL_FALSE); + } + } + { + slang_operation *brk = slang_oper_child(block, 1); + brk->type = SLANG_OPER_BREAK; + assert(!brk->children); + } + } + break; + case SLANG_OPER_CONTINUE: + /* convert continue into a break */ + oper->type = SLANG_OPER_BREAK; + break; + case SLANG_OPER_FOR: + case SLANG_OPER_DO: + case SLANG_OPER_WHILE: + /* stop upon finding a nested loop */ + break; + default: + /* recurse */ + { + GLuint i; + for (i = 0; i < oper->num_children; i++) { + replace_break_and_cont(A, slang_oper_child(oper, i)); + } + } + } +} + + +/** + * Transform a while-loop so that continue statements are converted to breaks. + * Then do normal IR code generation. + * + * Before: + * + * while (LOOPCOND) { + * A; + * if (IFCOND) + * continue; + * B; + * break; + * C; + * } + * + * After: + * + * { + * bool _notBreakFlag = 1; + * while (_notBreakFlag && LOOPCOND) { + * do { + * A; + * if (IFCOND) { + * break; // was continue + * } + * B; + * _notBreakFlag = 0; // was + * break; // break + * C; + * } while (0) + * } + * } + */ +static slang_ir_node * +_slang_gen_while_without_continue(slang_assemble_ctx *A, slang_operation *oper) +{ + slang_operation *top; + slang_operation *innerBody; + + assert(oper->type == SLANG_OPER_WHILE); + + top = slang_operation_new(1); + top->type = SLANG_OPER_BLOCK_NEW_SCOPE; + top->locals->outer_scope = oper->locals->outer_scope; + slang_operation_add_children(top, 2); + + /* declare: bool _notBreakFlag = true */ + { + slang_operation *condDecl = slang_oper_child(top, 0); + slang_generate_declaration(A, top->locals, condDecl, + SLANG_SPEC_BOOL, "_notBreakFlag", GL_TRUE); + } + + /* build outer while-loop: while (_notBreakFlag && LOOPCOND) { ... } */ + { + slang_operation *outerWhile = slang_oper_child(top, 1); + outerWhile->type = SLANG_OPER_WHILE; + slang_operation_add_children(outerWhile, 2); + + /* _notBreakFlag && LOOPCOND */ + { + slang_operation *cond = slang_oper_child(outerWhile, 0); + cond->type = SLANG_OPER_LOGICALAND; + slang_operation_add_children(cond, 2); + { + slang_operation *notBreak = slang_oper_child(cond, 0); + slang_operation_identifier(notBreak, A, "_notBreakFlag"); + } + { + slang_operation *origCond = slang_oper_child(cond, 1); + slang_operation_copy(origCond, slang_oper_child(oper, 0)); + } + } + + /* inner loop */ + { + slang_operation *innerDo = slang_oper_child(outerWhile, 1); + innerDo->type = SLANG_OPER_DO; + slang_operation_add_children(innerDo, 2); + + /* copy original do-loop body into inner do-loop's body */ + innerBody = slang_oper_child(innerDo, 0); + slang_operation_copy(innerBody, slang_oper_child(oper, 1)); + innerBody->locals->outer_scope = innerDo->locals; + + /* inner do-loop's condition is constant/false */ + { + slang_operation *constFalse = slang_oper_child(innerDo, 1); + slang_operation_literal_bool(constFalse, GL_FALSE); + } + } + } + + /* Finally, in innerBody, + * replace "break" with "_notBreakFlag = 0; break" + * replace "continue" with "break" + */ + replace_break_and_cont(A, innerBody); + + /*slang_print_tree(top, 0);*/ + + return _slang_gen_operation(A, top); + + return NULL; +} + + +/** * Generate loop code using high-level IR_LOOP instruction */ static slang_ir_node * -_slang_gen_while(slang_assemble_ctx * A, const slang_operation *oper) +_slang_gen_while(slang_assemble_ctx * A, slang_operation *oper) { /* * LOOP: * BREAK if !expr (child[0]) * body code (child[1]) */ - slang_ir_node *prevLoop, *loop, *breakIf, *body; + slang_ir_node *loop, *breakIf, *body; GLboolean isConst, constTrue; + if (!A->EmitContReturn) { + /* We don't want to emit CONT instructions. If this while-loop has + * a continue, translate it away. + */ + if (_slang_loop_contains_continue(slang_oper_child(oper, 1))) { + return _slang_gen_while_without_continue(A, oper); + } + } + /* type-check expression */ if (!_slang_is_boolean(A, &oper->children[0])) { slang_info_log_error(A->log, "scalar/boolean expression expected for 'while'"); @@ -2364,11 +2901,11 @@ _slang_gen_while(slang_assemble_ctx * A, const slang_operation *oper) return new_node0(IR_NOP); } + /* Begin new loop */ loop = new_loop(NULL); - /* save old, push new loop */ - prevLoop = A->CurLoop; - A->CurLoop = loop; + /* save loop state */ + push_loop(A, oper, loop); if (isConst && constTrue) { /* while(nonzero constant), no conditional break */ @@ -2377,7 +2914,7 @@ _slang_gen_while(slang_assemble_ctx * A, const slang_operation *oper) else { slang_ir_node *cond = new_cond(new_not(_slang_gen_operation(A, &oper->children[0]))); - breakIf = new_break_if_true(A->CurLoop, cond); + breakIf = new_break_if_true(A, cond); } body = _slang_gen_operation(A, &oper->children[1]); loop->Children[0] = new_seq(breakIf, body); @@ -2386,23 +2923,128 @@ _slang_gen_while(slang_assemble_ctx * A, const slang_operation *oper) /* loop->List is head of linked list of break/continue nodes */ if (!loop->List && isConst && constTrue) { /* infinite loop detected */ - A->CurLoop = prevLoop; /* clean-up */ + pop_loop(A); slang_info_log_error(A->log, "Infinite loop detected!"); return NULL; } - /* pop loop, restore prev */ - A->CurLoop = prevLoop; + /* restore loop state */ + pop_loop(A); return loop; } /** + * Transform a do-while-loop so that continue statements are converted to breaks. + * Then do normal IR code generation. + * + * Before: + * + * do { + * A; + * if (IFCOND) + * continue; + * B; + * break; + * C; + * } while (LOOPCOND); + * + * After: + * + * { + * bool _notBreakFlag = 1; + * do { + * do { + * A; + * if (IFCOND) { + * break; // was continue + * } + * B; + * _notBreakFlag = 0; // was + * break; // break + * C; + * } while (0) + * } while (_notBreakFlag && LOOPCOND); + * } + */ +static slang_ir_node * +_slang_gen_do_without_continue(slang_assemble_ctx *A, slang_operation *oper) +{ + slang_operation *top; + slang_operation *innerBody; + + assert(oper->type == SLANG_OPER_DO); + + top = slang_operation_new(1); + top->type = SLANG_OPER_BLOCK_NEW_SCOPE; + top->locals->outer_scope = oper->locals->outer_scope; + slang_operation_add_children(top, 2); + + /* declare: bool _notBreakFlag = true */ + { + slang_operation *condDecl = slang_oper_child(top, 0); + slang_generate_declaration(A, top->locals, condDecl, + SLANG_SPEC_BOOL, "_notBreakFlag", GL_TRUE); + } + + /* build outer do-loop: do { ... } while (_notBreakFlag && LOOPCOND) */ + { + slang_operation *outerDo = slang_oper_child(top, 1); + outerDo->type = SLANG_OPER_DO; + slang_operation_add_children(outerDo, 2); + + /* inner do-loop */ + { + slang_operation *innerDo = slang_oper_child(outerDo, 0); + innerDo->type = SLANG_OPER_DO; + slang_operation_add_children(innerDo, 2); + + /* copy original do-loop body into inner do-loop's body */ + innerBody = slang_oper_child(innerDo, 0); + slang_operation_copy(innerBody, slang_oper_child(oper, 0)); + innerBody->locals->outer_scope = innerDo->locals; + + /* inner do-loop's condition is constant/false */ + { + slang_operation *constFalse = slang_oper_child(innerDo, 1); + slang_operation_literal_bool(constFalse, GL_FALSE); + } + } + + /* _notBreakFlag && LOOPCOND */ + { + slang_operation *cond = slang_oper_child(outerDo, 1); + cond->type = SLANG_OPER_LOGICALAND; + slang_operation_add_children(cond, 2); + { + slang_operation *notBreak = slang_oper_child(cond, 0); + slang_operation_identifier(notBreak, A, "_notBreakFlag"); + } + { + slang_operation *origCond = slang_oper_child(cond, 1); + slang_operation_copy(origCond, slang_oper_child(oper, 1)); + } + } + } + + /* Finally, in innerBody, + * replace "break" with "_notBreakFlag = 0; break" + * replace "continue" with "break" + */ + replace_break_and_cont(A, innerBody); + + /*slang_print_tree(top, 0);*/ + + return _slang_gen_operation(A, top); +} + + +/** * Generate IR tree for a do-while loop using high-level LOOP, IF instructions. */ static slang_ir_node * -_slang_gen_do(slang_assemble_ctx * A, const slang_operation *oper) +_slang_gen_do(slang_assemble_ctx * A, slang_operation *oper) { /* * LOOP: @@ -2410,9 +3052,18 @@ _slang_gen_do(slang_assemble_ctx * A, const slang_operation *oper) * tail code: * BREAK if !expr (child[1]) */ - slang_ir_node *prevLoop, *loop; + slang_ir_node *loop; GLboolean isConst, constTrue; + if (!A->EmitContReturn) { + /* We don't want to emit CONT instructions. If this do-loop has + * a continue, translate it away. + */ + if (_slang_loop_contains_continue(slang_oper_child(oper, 0))) { + return _slang_gen_do_without_continue(A, oper); + } + } + /* type-check expression */ if (!_slang_is_boolean(A, &oper->children[1])) { slang_info_log_error(A->log, "scalar/boolean expression expected for 'do/while'"); @@ -2421,9 +3072,8 @@ _slang_gen_do(slang_assemble_ctx * A, const slang_operation *oper) loop = new_loop(NULL); - /* save old, push new loop */ - prevLoop = A->CurLoop; - A->CurLoop = loop; + /* save loop state */ + push_loop(A, oper, loop); /* loop body: */ loop->Children[0] = _slang_gen_operation(A, &oper->children[0]); @@ -2437,13 +3087,13 @@ _slang_gen_do(slang_assemble_ctx * A, const slang_operation *oper) else { slang_ir_node *cond = new_cond(new_not(_slang_gen_operation(A, &oper->children[1]))); - loop->Children[1] = new_break_if_true(A->CurLoop, cond); + loop->Children[1] = new_break_if_true(A, cond); } /* XXX we should do infinite loop detection, as above */ - /* pop loop, restore prev */ - A->CurLoop = prevLoop; + /* restore loop state */ + pop_loop(A); return loop; } @@ -2485,9 +3135,14 @@ _slang_can_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper) const char *varName; slang_atom varId; - assert(oper->type == SLANG_OPER_FOR); + if (oper->type != SLANG_OPER_FOR) + return GL_FALSE; + assert(oper->num_children == 4); + if (_slang_loop_contains_continue_or_break(slang_oper_child_const(oper, 3))) + return GL_FALSE; + /* children[0] must be either "int i=constant" or "i=constant" */ if (oper->children[0].type == SLANG_OPER_BLOCK_NO_NEW_SCOPE) { slang_variable *var; @@ -2582,20 +3237,6 @@ _slang_can_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper) } -static void -_unroll_loop_inc(slang_assemble_ctx * A) -{ - A->UnrollLoop++; -} - - -static void -_unroll_loop_dec(slang_assemble_ctx * A) -{ - A->UnrollLoop--; -} - - /** * Unroll a for-loop. * First we determine the number of iterations to unroll. @@ -2612,9 +3253,6 @@ _slang_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper) slang_ir_node *n, *root = NULL; slang_atom varId; - /* Set flag so code generator knows we're unrolling loops */ - _unroll_loop_inc( A ); - if (oper->children[0].type == SLANG_OPER_BLOCK_NO_NEW_SCOPE) { /* for (int i=0; ... */ slang_variable *var; @@ -2637,15 +3275,11 @@ _slang_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper) /* make a copy of the loop body */ body = slang_operation_new(1); - if (!body) { - _unroll_loop_dec( A ); + if (!body) return NULL; - } - if (!slang_operation_copy(body, &oper->children[3])) { - _unroll_loop_dec( A ); + if (!slang_operation_copy(body, &oper->children[3])) return NULL; - } /* in body, replace instances of 'varId' with literal 'iter' */ { @@ -2656,7 +3290,6 @@ _slang_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper) if (!oldVar) { /* undeclared loop variable */ slang_operation_delete(body); - _unroll_loop_dec( A ); return NULL; } @@ -2671,36 +3304,195 @@ _slang_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper) /* do IR codegen for body */ n = _slang_gen_operation(A, body); - if (!n) { - _unroll_loop_dec( A ); + if (!n) return NULL; - } root = new_seq(root, n); slang_operation_delete(body); } - _unroll_loop_dec( A ); - return root; } /** + * Replace 'continue' statement with 'break' inside a for-loop. + * This is a recursive helper function used by _slang_gen_for_without_continue(). + */ +static void +replace_continue_with_break(slang_assemble_ctx *A, slang_operation *oper) +{ + switch (oper->type) { + case SLANG_OPER_CONTINUE: + oper->type = SLANG_OPER_BREAK; + break; + case SLANG_OPER_FOR: + case SLANG_OPER_DO: + case SLANG_OPER_WHILE: + /* stop upon finding a nested loop */ + break; + default: + /* recurse */ + { + GLuint i; + for (i = 0; i < oper->num_children; i++) { + replace_continue_with_break(A, slang_oper_child(oper, i)); + } + } + } +} + + +/** + * Transform a for-loop so that continue statements are converted to breaks. + * Then do normal IR code generation. + * + * Before: + * + * for (INIT; LOOPCOND; INCR) { + * A; + * if (IFCOND) { + * continue; + * } + * B; + * } + * + * After: + * + * { + * bool _condFlag = 1; + * for (INIT; _condFlag; ) { + * for ( ; _condFlag = LOOPCOND; INCR) { + * A; + * if (IFCOND) { + * break; + * } + * B; + * } + * if (_condFlag) + * INCR; + * } + * } + */ +static slang_ir_node * +_slang_gen_for_without_continue(slang_assemble_ctx *A, slang_operation *oper) +{ + slang_operation *top; + slang_operation *outerFor, *innerFor, *init, *cond, *incr; + slang_operation *lhs, *rhs; + + assert(oper->type == SLANG_OPER_FOR); + + top = slang_operation_new(1); + top->type = SLANG_OPER_BLOCK_NEW_SCOPE; + top->locals->outer_scope = oper->locals->outer_scope; + slang_operation_add_children(top, 2); + + /* declare: bool _condFlag = true */ + { + slang_operation *condDecl = slang_oper_child(top, 0); + slang_generate_declaration(A, top->locals, condDecl, + SLANG_SPEC_BOOL, "_condFlag", GL_TRUE); + } + + /* build outer loop: for (INIT; _condFlag; ) { */ + outerFor = slang_oper_child(top, 1); + outerFor->type = SLANG_OPER_FOR; + slang_operation_add_children(outerFor, 4); + + init = slang_oper_child(outerFor, 0); + slang_operation_copy(init, slang_oper_child(oper, 0)); + + cond = slang_oper_child(outerFor, 1); + cond->type = SLANG_OPER_IDENTIFIER; + cond->a_id = slang_atom_pool_atom(A->atoms, "_condFlag"); + + incr = slang_oper_child(outerFor, 2); + incr->type = SLANG_OPER_VOID; + + /* body of the outer loop */ + { + slang_operation *block = slang_oper_child(outerFor, 3); + + slang_operation_add_children(block, 2); + block->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE; + + /* build inner loop: for ( ; _condFlag = LOOPCOND; INCR) { */ + { + innerFor = slang_oper_child(block, 0); + + /* make copy of orig loop */ + slang_operation_copy(innerFor, oper); + assert(innerFor->type == SLANG_OPER_FOR); + innerFor->locals->outer_scope = block->locals; + + init = slang_oper_child(innerFor, 0); + init->type = SLANG_OPER_VOID; /* leak? */ + + cond = slang_oper_child(innerFor, 1); + slang_operation_destruct(cond); + cond->type = SLANG_OPER_ASSIGN; + cond->locals = _slang_variable_scope_new(innerFor->locals); + slang_operation_add_children(cond, 2); + + lhs = slang_oper_child(cond, 0); + lhs->type = SLANG_OPER_IDENTIFIER; + lhs->a_id = slang_atom_pool_atom(A->atoms, "_condFlag"); + + rhs = slang_oper_child(cond, 1); + slang_operation_copy(rhs, slang_oper_child(oper, 1)); + } + + /* if (_condFlag) INCR; */ + { + slang_operation *ifop = slang_oper_child(block, 1); + ifop->type = SLANG_OPER_IF; + slang_operation_add_children(ifop, 2); + + /* re-use cond node build above */ + slang_operation_copy(slang_oper_child(ifop, 0), cond); + + /* incr node from original for-loop operation */ + slang_operation_copy(slang_oper_child(ifop, 1), + slang_oper_child(oper, 2)); + } + + /* finally, replace "continue" with "break" in the inner for-loop */ + replace_continue_with_break(A, slang_oper_child(innerFor, 3)); + } + + return _slang_gen_operation(A, top); +} + + + +/** * Generate IR for a for-loop. Unrolling will be done when possible. */ static slang_ir_node * -_slang_gen_for(slang_assemble_ctx * A, const slang_operation *oper) +_slang_gen_for(slang_assemble_ctx * A, slang_operation *oper) { - GLboolean unroll = _slang_can_unroll_for_loop(A, oper); + GLboolean unroll; + + if (!A->EmitContReturn) { + /* We don't want to emit CONT instructions. If this for-loop has + * a continue, translate it away. + */ + if (_slang_loop_contains_continue(slang_oper_child(oper, 3))) { + return _slang_gen_for_without_continue(A, oper); + } + } + unroll = _slang_can_unroll_for_loop(A, oper); if (unroll) { slang_ir_node *code = _slang_unroll_for_loop(A, oper); if (code) return code; } + assert(oper->type == SLANG_OPER_FOR); + /* conventional for-loop code generation */ { /* @@ -2711,24 +3503,23 @@ _slang_gen_for(slang_assemble_ctx * A, const slang_operation *oper) * tail code: * incr code (child[2]) // XXX continue here */ - slang_ir_node *prevLoop, *loop, *cond, *breakIf, *body, *init, *incr; + slang_ir_node *loop, *cond, *breakIf, *body, *init, *incr; init = _slang_gen_operation(A, &oper->children[0]); loop = new_loop(NULL); - /* save old, push new loop */ - prevLoop = A->CurLoop; - A->CurLoop = loop; + /* save loop state */ + push_loop(A, oper, loop); cond = new_cond(new_not(_slang_gen_operation(A, &oper->children[1]))); - breakIf = new_break_if_true(A->CurLoop, cond); + breakIf = new_break_if_true(A, cond); body = _slang_gen_operation(A, &oper->children[3]); incr = _slang_gen_operation(A, &oper->children[2]); loop->Children[0] = new_seq(breakIf, body); loop->Children[1] = incr; /* tail code */ - /* pop loop, restore prev */ - A->CurLoop = prevLoop; + /* restore loop state */ + pop_loop(A); return new_seq(init, loop); } @@ -2738,18 +3529,22 @@ _slang_gen_for(slang_assemble_ctx * A, const slang_operation *oper) static slang_ir_node * _slang_gen_continue(slang_assemble_ctx * A, const slang_operation *oper) { - slang_ir_node *n, *loopNode; + slang_ir_node *n, *cont, *incr = NULL, *loopNode; + assert(oper->type == SLANG_OPER_CONTINUE); - loopNode = A->CurLoop; + loopNode = current_loop_ir(A); assert(loopNode); assert(loopNode->Opcode == IR_LOOP); - n = new_node0(IR_CONT); - if (n) { - n->Parent = loopNode; - /* insert this node at head of linked list */ - n->List = loopNode->List; - loopNode->List = n; + + cont = new_node0(IR_CONT); + if (cont) { + cont->Parent = loopNode; + /* insert this node at head of linked list of cont/break instructions */ + cont->List = loopNode->List; + loopNode->List = cont; } + + n = new_seq(incr, cont); return n; } @@ -2819,24 +3614,20 @@ _slang_gen_if(slang_assemble_ctx * A, const slang_operation *oper) if (is_operation_type(&oper->children[1], SLANG_OPER_BREAK) && !haveElseClause) { /* Special case: generate a conditional break */ - if (!A->CurLoop && A->UnrollLoop) /* trying to unroll */ - return NULL; - ifBody = new_break_if_true(A->CurLoop, cond); + ifBody = new_break_if_true(A, cond); return ifBody; } else if (is_operation_type(&oper->children[1], SLANG_OPER_CONTINUE) - && !haveElseClause) { + && !haveElseClause + && current_loop_oper(A) + && current_loop_oper(A)->type != SLANG_OPER_FOR) { /* Special case: generate a conditional continue */ - if (!A->CurLoop && A->UnrollLoop) /* trying to unroll */ - return NULL; - ifBody = new_cont_if_true(A->CurLoop, cond); + ifBody = new_cont_if_true(A, cond); return ifBody; } else { /* general case */ ifBody = _slang_gen_operation(A, &oper->children[1]); - if (!ifBody) - return NULL; if (haveElseClause) elseBody = _slang_gen_operation(A, &oper->children[2]); else @@ -3242,14 +4033,11 @@ _slang_gen_logical_and(slang_assemble_ctx *A, slang_operation *oper) select = slang_operation_new(1); select->type = SLANG_OPER_SELECT; - select->num_children = 3; - select->children = slang_operation_new(3); + slang_operation_add_children(select, 3); - slang_operation_copy(&select->children[0], &oper->children[0]); - slang_operation_copy(&select->children[1], &oper->children[1]); - select->children[2].type = SLANG_OPER_LITERAL_BOOL; - ASSIGN_4V(select->children[2].literal, 0, 0, 0, 0); /* false */ - select->children[2].literal_size = 1; + slang_operation_copy(slang_oper_child(select, 0), &oper->children[0]); + slang_operation_copy(slang_oper_child(select, 1), &oper->children[1]); + slang_operation_literal_bool(slang_oper_child(select, 2), GL_FALSE); n = _slang_gen_select(A, select); return n; @@ -3268,14 +4056,11 @@ _slang_gen_logical_or(slang_assemble_ctx *A, slang_operation *oper) select = slang_operation_new(1); select->type = SLANG_OPER_SELECT; - select->num_children = 3; - select->children = slang_operation_new(3); + slang_operation_add_children(select, 3); - slang_operation_copy(&select->children[0], &oper->children[0]); - select->children[1].type = SLANG_OPER_LITERAL_BOOL; - ASSIGN_4V(select->children[1].literal, 1, 1, 1, 1); /* true */ - select->children[1].literal_size = 1; - slang_operation_copy(&select->children[2], &oper->children[1]); + slang_operation_copy(slang_oper_child(select, 0), &oper->children[0]); + slang_operation_literal_bool(slang_oper_child(select, 1), GL_TRUE); + slang_operation_copy(slang_oper_child(select, 2), &oper->children[1]); n = _slang_gen_select(A, select); return n; @@ -3288,70 +4073,8 @@ _slang_gen_logical_or(slang_assemble_ctx *A, slang_operation *oper) static slang_ir_node * _slang_gen_return(slang_assemble_ctx * A, slang_operation *oper) { - const GLboolean haveReturnValue - = (oper->num_children == 1 && oper->children[0].type != SLANG_OPER_VOID); - - /* error checking */ - assert(A->CurFunction); - if (haveReturnValue && - A->CurFunction->header.type.specifier.type == SLANG_SPEC_VOID) { - slang_info_log_error(A->log, "illegal return expression"); - return NULL; - } - else if (!haveReturnValue && - A->CurFunction->header.type.specifier.type != SLANG_SPEC_VOID) { - slang_info_log_error(A->log, "return statement requires an expression"); - return NULL; - } - - if (!haveReturnValue) { - return new_return(A->curFuncEndLabel); - } - else { - /* - * Convert from: - * return expr; - * To: - * __retVal = expr; - * return; // goto __endOfFunction - */ - slang_operation *assign; - slang_atom a_retVal; - slang_ir_node *n; - - a_retVal = slang_atom_pool_atom(A->atoms, "__retVal"); - assert(a_retVal); - -#if 1 /* DEBUG */ - { - slang_variable *v = - _slang_variable_locate(oper->locals, a_retVal, GL_TRUE); - if (!v) { - /* trying to return a value in a void-valued function */ - return NULL; - } - } -#endif - - assign = slang_operation_new(1); - assign->type = SLANG_OPER_ASSIGN; - assign->num_children = 2; - assign->children = slang_operation_new(2); - /* lhs (__retVal) */ - assign->children[0].type = SLANG_OPER_IDENTIFIER; - assign->children[0].a_id = a_retVal; - assign->children[0].locals->outer_scope = assign->locals; - /* rhs (expr) */ - /* XXX we might be able to avoid this copy someday */ - slang_operation_copy(&assign->children[1], &oper->children[0]); - - /* assemble the new code */ - n = new_seq(_slang_gen_operation(A, assign), - new_return(A->curFuncEndLabel)); - - slang_operation_delete(assign); - return n; - } + assert(oper->type == SLANG_OPER_RETURN); + return new_return(A->curFuncEndLabel); } @@ -3457,6 +4180,7 @@ _slang_gen_declaration(slang_assemble_ctx *A, slang_operation *oper) assert(oper->type == SLANG_OPER_VARIABLE_DECL); assert(oper->num_children <= 1); + /* lookup the variable by name */ var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE); if (!var) @@ -3612,6 +4336,9 @@ root_swizzle(const slang_ir_storage *st) static slang_ir_node * _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) { + slang_operation *pred = NULL; + slang_ir_node *n = NULL; + if (oper->children[0].type == SLANG_OPER_IDENTIFIER) { /* Check that var is writeable */ slang_variable *var @@ -3632,6 +4359,17 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) (char *) oper->children[0].a_id); return NULL; } + + /* check if we need to predicate this assignment based on __notRetFlag */ + if ((var->is_global || + var->type.qualifier == SLANG_QUAL_OUT || + var->type.qualifier == SLANG_QUAL_INOUT) && A->UseReturnFlag) { + /* create predicate, used below */ + pred = slang_operation_new(1); + pred->type = SLANG_OPER_IDENTIFIER; + pred->a_id = slang_atom_pool_atom(A->atoms, "__notRetFlag"); + pred->locals->outer_scope = oper->locals->outer_scope; + } } if (oper->children[0].type == SLANG_OPER_IDENTIFIER && @@ -3643,14 +4381,12 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) * cases such as "v.x = f();" - would help with typical vertex * transformation. */ - slang_ir_node *n; n = _slang_gen_function_call_name(A, (const char *) oper->children[1].a_id, &oper->children[1], &oper->children[0]); - return n; } else { - slang_ir_node *n, *lhs, *rhs; + slang_ir_node *lhs, *rhs; /* lhs and rhs type checking */ if (!_slang_assignment_compatible(A, @@ -3690,12 +4426,21 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper) rhs = _slang_gen_swizzle(rhs, newSwizzle); } n = new_node2(IR_COPY, lhs, rhs); - return n; } else { return NULL; } } + + if (n && pred) { + /* predicate the assignment code on __notRetFlag */ + slang_ir_node *top, *cond; + + cond = _slang_gen_operation(A, pred); + top = new_if(cond, n, NULL); + return top; + } + return n; } @@ -4048,16 +4793,14 @@ _slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper) case SLANG_OPER_WHILE: return _slang_gen_while(A, oper); case SLANG_OPER_BREAK: - if (!A->CurLoop) { - if (!A->UnrollLoop) - slang_info_log_error(A->log, "'break' not in loop"); + if (!current_loop_oper(A)) { + slang_info_log_error(A->log, "'break' not in loop"); return NULL; } - return new_break(A->CurLoop); + return new_break(current_loop_ir(A)); case SLANG_OPER_CONTINUE: - if (!A->CurLoop) { - if (!A->UnrollLoop) - slang_info_log_error(A->log, "'continue' not in loop"); + if (!current_loop_oper(A)) { + slang_info_log_error(A->log, "'continue' not in loop"); return NULL; } return _slang_gen_continue(A, oper); @@ -4182,6 +4925,8 @@ _slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper) return _slang_gen_method_call(A, oper); case SLANG_OPER_RETURN: return _slang_gen_return(A, oper); + case SLANG_OPER_RETURN_INLINED: + return _slang_gen_return(A, oper); case SLANG_OPER_LABEL: return new_label(oper->label); case SLANG_OPER_IDENTIFIER: @@ -4303,6 +5048,8 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, const GLint totalSize = _slang_array_size(size, arrayLen); GLint texIndex = sampler_to_texture_index(var->type.specifier.type); + var->is_global = GL_TRUE; + /* check for sampler2D arrays */ if (texIndex == -1 && var->type.specifier._array) texIndex = sampler_to_texture_index(var->type.specifier._array->type); @@ -4601,7 +5348,9 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun) assert(A->program->Parameters ); assert(A->program->Varying); assert(A->vartable); - A->CurLoop = NULL; + + A->LoopDepth = 0; + A->UseReturnFlag = GL_FALSE; A->CurFunction = fun; /* fold constant expressions, etc. */ diff --git a/src/mesa/shader/slang/slang_codegen.h b/src/mesa/shader/slang/slang_codegen.h index d80013ad341..ee3be55a459 100644 --- a/src/mesa/shader/slang/slang_codegen.h +++ b/src/mesa/shader/slang/slang_codegen.h @@ -31,6 +31,9 @@ #include "slang_compile.h" +#define MAX_LOOP_DEPTH 30 + + typedef struct slang_assemble_ctx_ { slang_atom_pool *atoms; @@ -39,11 +42,19 @@ typedef struct slang_assemble_ctx_ struct gl_sl_pragmas *pragmas; slang_var_table *vartable; slang_info_log *log; - struct slang_label_ *curFuncEndLabel; - struct slang_ir_node_ *CurLoop; + + /* current loop stack */ + const slang_operation *LoopOperStack[MAX_LOOP_DEPTH]; + struct slang_ir_node_ *LoopIRStack[MAX_LOOP_DEPTH]; + GLuint LoopDepth; + + /* current function */ struct slang_function_ *CurFunction; - GLuint UnrollLoop; + struct slang_label_ *curFuncEndLabel; + GLboolean UseReturnFlag; + GLboolean UnresolvedRefs; + GLboolean EmitContReturn; } slang_assemble_ctx; diff --git a/src/mesa/shader/slang/slang_compile.c b/src/mesa/shader/slang/slang_compile.c index d7ad879e97a..c1b97c7cb70 100644 --- a/src/mesa/shader/slang/slang_compile.c +++ b/src/mesa/shader/slang/slang_compile.c @@ -1953,6 +1953,7 @@ static int parse_init_declarator(slang_parse_ctx * C, slang_output_ctx * O, const slang_fully_specified_type * type) { + GET_CURRENT_CONTEXT(ctx); /* a hack */ slang_variable *var; slang_atom a_name; @@ -2066,6 +2067,7 @@ parse_init_declarator(slang_parse_ctx * C, slang_output_ctx * O, A.vartable = O->vartable; A.log = C->L; A.curFuncEndLabel = NULL; + A.EmitContReturn = ctx->Shader.EmitContReturn; if (!_slang_codegen_global_variable(&A, var, C->type)) RETURN0; } @@ -2430,6 +2432,7 @@ parse_code_unit(slang_parse_ctx * C, slang_code_unit * unit, A.program = o.program; A.pragmas = &shader->Pragmas; A.vartable = o.vartable; + A.EmitContReturn = ctx->Shader.EmitContReturn; A.log = C->L; /* main() takes no parameters */ diff --git a/src/mesa/shader/slang/slang_compile_operation.c b/src/mesa/shader/slang/slang_compile_operation.c index e6506168808..3e2bdbc91ff 100644 --- a/src/mesa/shader/slang/slang_compile_operation.c +++ b/src/mesa/shader/slang/slang_compile_operation.c @@ -119,11 +119,13 @@ slang_operation_copy(slang_operation * x, const slang_operation * y) if (!slang_operation_construct(&z)) return GL_FALSE; z.type = y->type; - z.children = (slang_operation *) - _slang_alloc(y->num_children * sizeof(slang_operation)); - if (z.children == NULL) { - slang_operation_destruct(&z); - return GL_FALSE; + if (y->num_children > 0) { + z.children = (slang_operation *) + _slang_alloc(y->num_children * sizeof(slang_operation)); + if (z.children == NULL) { + slang_operation_destruct(&z); + return GL_FALSE; + } } for (z.num_children = 0; z.num_children < y->num_children; z.num_children++) { @@ -152,6 +154,15 @@ slang_operation_copy(slang_operation * x, const slang_operation * y) return GL_FALSE; } } + + /* update scoping for children */ + for (i = 0; i < y->num_children; i++) { + if (y->children[i].locals && + y->children[i].locals->outer_scope == y->locals) { + z.children[i].locals->outer_scope = z.locals; + } + } + #if 0 z.var = y->var; z.fun = y->fun; @@ -198,6 +209,20 @@ slang_operation_delete(slang_operation *oper) } +void +slang_operation_free_children(slang_operation *oper) +{ + GLuint i; + for (i = 0; i < slang_oper_num_children(oper); i++) { + slang_operation *child = slang_oper_child(oper, i); + slang_operation_destruct(child); + } + _slang_free(oper->children); + oper->children = NULL; + oper->num_children = 0; +} + + slang_operation * slang_operation_grow(GLuint *numChildren, slang_operation **children) { @@ -263,6 +288,26 @@ slang_operation_insert(GLuint *numElements, slang_operation **array, } +/** + * Add/insert new child into given node at given position. + * \return pointer to the new child node + */ +slang_operation * +slang_operation_insert_child(slang_operation *oper, GLuint pos) +{ + slang_operation *newOp; + + newOp = slang_operation_insert(&oper->num_children, + &oper->children, + pos); + if (newOp) { + newOp->locals->outer_scope = oper->locals; + } + + return newOp; +} + + void _slang_operation_swap(slang_operation *oper0, slang_operation *oper1) { @@ -272,3 +317,16 @@ _slang_operation_swap(slang_operation *oper0, slang_operation *oper1) } +void +slang_operation_add_children(slang_operation *oper, GLuint num_children) +{ + GLuint i; + assert(oper->num_children == 0); + assert(oper->children == NULL); + oper->num_children = num_children; + oper->children = slang_operation_new(num_children); + for (i = 0; i < num_children; i++) { + oper->children[i].locals = _slang_variable_scope_new(oper->locals); + } +} + diff --git a/src/mesa/shader/slang/slang_compile_operation.h b/src/mesa/shader/slang/slang_compile_operation.h index 37af5d617c9..58f1edeed85 100644 --- a/src/mesa/shader/slang/slang_compile_operation.h +++ b/src/mesa/shader/slang/slang_compile_operation.h @@ -42,6 +42,7 @@ typedef enum slang_operation_type_ SLANG_OPER_CONTINUE, /* "continue" statement */ SLANG_OPER_DISCARD, /* "discard" (kill fragment) statement */ SLANG_OPER_RETURN, /* "return" [expr] */ + SLANG_OPER_RETURN_INLINED, /* "return" [expr] from inlined function */ SLANG_OPER_LABEL, /* a jump target */ SLANG_OPER_EXPRESSION, /* [expr] */ SLANG_OPER_IF, /* "if" [0] then [1] else [2] */ @@ -150,6 +151,9 @@ slang_operation_new(GLuint count); extern void slang_operation_delete(slang_operation *oper); +extern void +slang_operation_free_children(slang_operation *oper); + extern slang_operation * slang_operation_grow(GLuint *numChildren, slang_operation **children); @@ -157,8 +161,66 @@ extern slang_operation * slang_operation_insert(GLuint *numChildren, slang_operation **children, GLuint pos); +extern slang_operation * +slang_operation_insert_child(slang_operation *oper, GLuint pos); + extern void _slang_operation_swap(slang_operation *oper0, slang_operation *oper1); +extern void +slang_operation_add_children(slang_operation *oper, GLuint num_children); + + +/** Return number of children of given node */ +static INLINE GLuint +slang_oper_num_children(const slang_operation *oper) +{ + return oper->num_children; +} + +/** Return child of given operation node */ +static INLINE slang_operation * +slang_oper_child(slang_operation *oper, GLuint child) +{ + assert(child < oper->num_children); + return &oper->children[child]; +} + + +/** Return child of given operation node, const version */ +static INLINE const slang_operation * +slang_oper_child_const(const slang_operation *oper, GLuint child) +{ + assert(child < oper->num_children); + return &oper->children[child]; +} + + +/** Init oper to a boolean literal. */ +static INLINE void +slang_operation_literal_bool(slang_operation *oper, GLboolean value) +{ + oper->type = SLANG_OPER_LITERAL_BOOL; + oper->literal[0] = + oper->literal[1] = + oper->literal[2] = + oper->literal[3] = (float) value; + oper->literal_size = 1; +} + + +/** Init oper to an int literal. */ +static INLINE void +slang_operation_literal_int(slang_operation *oper, GLint value) +{ + oper->type = SLANG_OPER_LITERAL_INT; + oper->literal[0] = + oper->literal[1] = + oper->literal[2] = + oper->literal[3] = (float) value; + oper->literal_size = 1; +} + + #endif /* SLANG_COMPILE_OPERATION_H */ diff --git a/src/mesa/shader/slang/slang_compile_variable.h b/src/mesa/shader/slang/slang_compile_variable.h index a667d91b471..b4585599f24 100644 --- a/src/mesa/shader/slang/slang_compile_variable.h +++ b/src/mesa/shader/slang/slang_compile_variable.h @@ -39,6 +39,7 @@ typedef struct slang_variable_ GLuint array_len; /**< only if type == SLANG_SPEC_ARRAy */ struct slang_operation_ *initializer; /**< Optional initializer code */ GLuint size; /**< Variable's size in bytes */ + GLboolean is_global; GLboolean isTemp; /**< a named temporary (__resultTmp) */ GLboolean declared; /**< for debug */ struct slang_ir_storage_ *store; /**< Storage for this var */ diff --git a/src/mesa/shader/slang/slang_print.c b/src/mesa/shader/slang/slang_print.c index bf1475f91d9..98c7877534f 100644 --- a/src/mesa/shader/slang/slang_print.c +++ b/src/mesa/shader/slang/slang_print.c @@ -261,6 +261,7 @@ slang_print_tree(const slang_operation *op, int indent) break; case SLANG_OPER_BLOCK_NEW_SCOPE: + case SLANG_OPER_NON_INLINED_CALL: spaces(indent); printf("{{ // new scope locals=%p outer=%p: ", (void *) op->locals, @@ -348,6 +349,13 @@ slang_print_tree(const slang_operation *op, int indent) slang_print_tree(&op->children[0], indent + 3); break; + case SLANG_OPER_RETURN_INLINED: + spaces(indent); + printf("RETURN_INLINED\n"); + if (op->num_children > 0) + slang_print_tree(&op->children[0], indent + 3); + break; + case SLANG_OPER_LABEL: spaces(indent); printf("LABEL %s\n", (char *) op->a_id); @@ -478,7 +486,7 @@ slang_print_tree(const slang_operation *op, int indent) (void *) scope, (void *) op->locals, (void *) op->locals->outer_scope); - assert(scope); + /*assert(scope);*/ } } break; diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c index 3cc40ee8841..12d9b6b8744 100644 --- a/src/mesa/state_tracker/st_extensions.c +++ b/src/mesa/state_tracker/st_extensions.c @@ -120,6 +120,11 @@ void st_init_limits(struct st_context *st) c->MaxDrawBuffers = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS), 1, MAX_DRAW_BUFFERS); + + /* Is TGSI_OPCODE_CONT supported? */ + /* XXX separate query for early function return? */ + st->ctx->Shader.EmitContReturn = + screen->get_param(screen, PIPE_CAP_TGSI_CONT_SUPPORTED); } |