/* * Copyright (C) 2008 George Sapountzis * * 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 * BRIAN PAUL 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. */ /* * DRI software rasterizer * * This is the mesa swrast module packaged into a DRI driver structure. * * The front-buffer is allocated by the loader. The loader provides read/write * callbacks for access to the front-buffer. The driver uses a scratch row for * front-buffer rendering to avoid repeated calls to the loader. * * The back-buffer is allocated by the driver and is private. */ #include "main/context.h" #include "main/extensions.h" #include "main/framebuffer.h" #include "main/imports.h" #include "main/renderbuffer.h" #include "swrast/swrast.h" #include "swrast_setup/swrast_setup.h" #include "tnl/tnl.h" #include "tnl/t_context.h" #include "tnl/t_pipeline.h" #include "vbo/vbo.h" #include "drivers/common/driverfuncs.h" #include "utils.h" #include "swrast_priv.h" #define need_GL_VERSION_1_3 #define need_GL_VERSION_1_4 #define need_GL_VERSION_1_5 #define need_GL_VERSION_2_0 #define need_GL_VERSION_2_1 /* sw extensions for imaging */ #define need_GL_EXT_blend_color #define need_GL_EXT_blend_minmax #define need_GL_EXT_convolution #define need_GL_EXT_histogram #define need_GL_SGI_color_table /* sw extensions not associated with some GL version */ #define need_GL_ARB_shader_objects #define need_GL_ARB_vertex_program #define need_GL_APPLE_vertex_array_object #define need_GL_ATI_fragment_shader #define need_GL_ATI_separate_stencil #define need_GL_EXT_depth_bounds_test #define need_GL_EXT_framebuffer_object #define need_GL_EXT_framebuffer_blit #define need_GL_EXT_gpu_program_parameters #define need_GL_EXT_paletted_texture #define need_GL_IBM_multimode_draw_arrays #define need_GL_MESA_resize_buffers #define need_GL_NV_vertex_program #define need_GL_NV_fragment_program #include "extension_helper.h" const struct dri_extension card_extensions[] = { { "GL_VERSION_1_3", GL_VERSION_1_3_functions }, { "GL_VERSION_1_4", GL_VERSION_1_4_functions }, { "GL_VERSION_1_5", GL_VERSION_1_5_functions }, { "GL_VERSION_2_0", GL_VERSION_2_0_functions }, { "GL_VERSION_2_1", GL_VERSION_2_1_functions }, { "GL_EXT_blend_color", GL_EXT_blend_color_functions }, { "GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions }, { "GL_EXT_convolution", GL_EXT_convolution_functions }, { "GL_EXT_histogram", GL_EXT_histogram_functions }, { "GL_SGI_color_table", GL_SGI_color_table_functions }, { "GL_ARB_shader_objects", GL_ARB_shader_objects_functions }, { "GL_ARB_vertex_program", GL_ARB_vertex_program_functions }, { "GL_APPLE_vertex_array_object", GL_APPLE_vertex_array_object_functions }, { "GL_ATI_fragment_shader", GL_ATI_fragment_shader_functions }, { "GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions }, { "GL_EXT_depth_bounds_test", GL_EXT_depth_bounds_test_functions }, { "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions }, { "GL_EXT_framebuffer_blit", GL_EXT_framebuffer_blit_functions }, { "GL_EXT_gpu_program_parameters", GL_EXT_gpu_program_parameters_functions }, { "GL_EXT_paletted_texture", GL_EXT_paletted_texture_functions }, { "GL_IBM_multimode_draw_arrays", GL_IBM_multimode_draw_arrays_functions }, { "GL_MESA_resize_buffers", GL_MESA_resize_buffers_functions }, { "GL_NV_vertex_program", GL_NV_vertex_program_functions }, { "GL_NV_fragment_program", GL_NV_fragment_program_functions }, { NULL, NULL } }; /** * Screen and config-related functions */ static void setupLoaderExtensions(__DRIscreen *psp, const __DRIextension **extensions) { int i; for (i = 0; extensions[i]; i++) { if (strcmp(extensions[i]->name, __DRI_SWRAST_LOADER) == 0) psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i]; } } static __DRIconfig ** swrastFillInModes(__DRIscreen *psp, unsigned pixel_bits, unsigned depth_bits, unsigned stencil_bits, GLboolean have_back_buffer) { __DRIconfig **configs; unsigned depth_buffer_factor; unsigned back_buffer_factor; GLenum fb_format; GLenum fb_type; /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't * support pageflipping at all. */ static const GLenum back_buffer_modes[] = { GLX_NONE, GLX_SWAP_UNDEFINED_OML }; uint8_t depth_bits_array[4]; uint8_t stencil_bits_array[4]; depth_bits_array[0] = 0; depth_bits_array[1] = 0; depth_bits_array[2] = depth_bits; depth_bits_array[3] = depth_bits; /* Just like with the accumulation buffer, always provide some modes * with a stencil buffer. */ stencil_bits_array[0] = 0; stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits; stencil_bits_array[2] = 0; stencil_bits_array[3] = (stencil_bits == 0) ? 8 : stencil_bits; depth_buffer_factor = 4; back_buffer_factor = 2; if (pixel_bits == 8) { fb_format = GL_RGB; fb_type = GL_UNSIGNED_BYTE_2_3_3_REV; } else if (pixel_bits == 16) { fb_format = GL_RGB; fb_type = GL_UNSIGNED_SHORT_5_6_5; } else { fb_format = GL_BGRA; fb_type = GL_UNSIGNED_INT_8_8_8_8_REV; } configs = driCreateConfigs(fb_format, fb_type, depth_bits_array, stencil_bits_array, depth_buffer_factor, back_buffer_modes, back_buffer_factor); if (configs == NULL) { fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__, __LINE__); return NULL; } return configs; } static __DRIscreen * driCreateNewScreen(int scrn, const __DRIextension **extensions, const __DRIconfig ***driver_configs, void *data) { static const __DRIextension *emptyExtensionList[] = { NULL }; __DRIscreen *psp; __DRIconfig **configs8, **configs16, **configs32; (void) data; TRACE; psp = _mesa_calloc(sizeof(*psp)); if (!psp) return NULL; setupLoaderExtensions(psp, extensions); psp->num = scrn; psp->extensions = emptyExtensionList; configs8 = swrastFillInModes(psp, 8, 8, 0, 1); configs16 = swrastFillInModes(psp, 16, 16, 0, 1); configs32 = swrastFillInModes(psp, 32, 24, 8, 1); configs16 = (__DRIconfig **)driConcatConfigs(configs8, configs16); *driver_configs = driConcatConfigs(configs16, configs32); driInitExtensions( NULL, card_extensions, GL_FALSE ); return psp; } static void driDestroyScreen(__DRIscreen *psp) { TRACE; if (psp) { _mesa_free(psp); } } static const __DRIextension **driGetExtensions(__DRIscreen *psp) { TRACE; return psp->extensions; } /** * Framebuffer and renderbuffer-related functions. */ static GLuint choose_pixel_format(const GLvisual *v) { if (v->rgbMode) { int bpp = v->rgbBits; if (bpp == 32 && v->redMask == 0xff0000 && v->greenMask == 0x00ff00 && v->blueMask == 0x0000ff) return PF_A8R8G8B8; else if (bpp == 16 && v->redMask == 0xf800 && v->greenMask == 0x07e0 && v->blueMask == 0x001f) return PF_R5G6B5; else if (bpp == 8 && v->redMask == 0x07 && v->greenMask == 0x38 && v->blueMask == 0xc0) return PF_R3G3B2; } else { if (v->indexBits == 8) return PF_CI8; } _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ ); return 0; } static void swrast_delete_renderbuffer(struct gl_renderbuffer *rb) { TRACE; _mesa_free(rb->Data); _mesa_free(rb); } static GLboolean swrast_alloc_front_storage(GLcontext *ctx, struct gl_renderbuffer *rb, GLenum internalFormat, GLuint width, GLuint height) { struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb); int bpp; unsigned mask = PITCH_ALIGN_BITS - 1; TRACE; rb->Data = NULL; rb->Width = width; rb->Height = height; switch (internalFormat) { case GL_RGB: bpp = rb->RedBits + rb->GreenBits + rb->BlueBits; break; case GL_RGBA: bpp = rb->RedBits + rb->GreenBits + rb->BlueBits + rb->AlphaBits; break; case GL_COLOR_INDEX8_EXT: bpp = rb->IndexBits; break; default: _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ ); return GL_FALSE; } /* always pad to PITCH_ALIGN_BITS */ xrb->pitch = ((width * bpp + mask) & ~mask) / 8; return GL_TRUE; } static GLboolean swrast_alloc_back_storage(GLcontext *ctx, struct gl_renderbuffer *rb, GLenum internalFormat, GLuint width, GLuint height) { struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb); TRACE; _mesa_free(rb->Data); swrast_alloc_front_storage(ctx, rb, internalFormat, width, height); rb->Data = _mesa_malloc(height * xrb->pitch); return GL_TRUE; } static struct swrast_renderbuffer * swrast_new_renderbuffer(const GLvisual *visual, GLboolean front) { struct swrast_renderbuffer *xrb = _mesa_calloc(sizeof *xrb); GLuint pixel_format; TRACE; if (!xrb) return NULL; _mesa_init_renderbuffer(&xrb->Base, 0); pixel_format = choose_pixel_format(visual); xrb->Base.Delete = swrast_delete_renderbuffer; if (front) { xrb->Base.AllocStorage = swrast_alloc_front_storage; swrast_set_span_funcs_front(xrb, pixel_format); } else { xrb->Base.AllocStorage = swrast_alloc_back_storage; swrast_set_span_funcs_back(xrb, pixel_format); } switch (pixel_format) { case PF_A8R8G8B8: xrb->Base.InternalFormat = GL_RGBA; xrb->Base._BaseFormat = GL_RGBA; xrb->Base.DataType = GL_UNSIGNED_BYTE; xrb->Base.RedBits = 8 * sizeof(GLubyte); xrb->Base.GreenBits = 8 * sizeof(GLubyte); xrb->Base.BlueBits = 8 * sizeof(GLubyte); xrb->Base.AlphaBits = 8 * sizeof(GLubyte); break; case PF_R5G6B5: xrb->Base.InternalFormat = GL_RGB; xrb->Base._BaseFormat = GL_RGB; xrb->Base.DataType = GL_UNSIGNED_BYTE; xrb->Base.RedBits = 5 * sizeof(GLubyte); xrb->Base.GreenBits = 6 * sizeof(GLubyte); xrb->Base.BlueBits = 5 * sizeof(GLubyte); xrb->Base.AlphaBits = 0; break; case PF_R3G3B2: xrb->Base.InternalFormat = GL_RGB; xrb->Base._BaseFormat = GL_RGB; xrb->Base.DataType = GL_UNSIGNED_BYTE; xrb->Base.RedBits = 3 * sizeof(GLubyte); xrb->Base.GreenBits = 3 * sizeof(GLubyte); xrb->Base.BlueBits = 2 * sizeof(GLubyte); xrb->Base.AlphaBits = 0; break; case PF_CI8: xrb->Base.InternalFormat = GL_COLOR_INDEX8_EXT; xrb->Base._BaseFormat = GL_COLOR_INDEX; xrb->Base.DataType = GL_UNSIGNED_BYTE; xrb->Base.IndexBits = 8 * sizeof(GLubyte); break; default: return NULL; } return xrb; } static __DRIdrawable * driCreateNewDrawable(__DRIscreen *screen, const __DRIconfig *config, void *data) { __DRIdrawable *buf; struct swrast_renderbuffer *frontrb, *backrb; TRACE; buf = _mesa_calloc(sizeof *buf); if (!buf) return NULL; buf->loaderPrivate = data; buf->driScreenPriv = screen; buf->row = _mesa_malloc(MAX_WIDTH * 4); /* basic framebuffer setup */ _mesa_initialize_framebuffer(&buf->Base, &config->modes); /* add front renderbuffer */ frontrb = swrast_new_renderbuffer(&config->modes, GL_TRUE); _mesa_add_renderbuffer(&buf->Base, BUFFER_FRONT_LEFT, &frontrb->Base); /* add back renderbuffer */ if (config->modes.doubleBufferMode) { backrb = swrast_new_renderbuffer(&config->modes, GL_FALSE); _mesa_add_renderbuffer(&buf->Base, BUFFER_BACK_LEFT, &backrb->Base); } /* add software renderbuffers */ _mesa_add_soft_renderbuffers(&buf->Base, GL_FALSE, /* color */ config->modes.haveDepthBuffer, config->modes.haveStencilBuffer, config->modes.haveAccumBuffer, GL_FALSE, /* alpha */ GL_FALSE /* aux bufs */); return buf; } static void driDestroyDrawable(__DRIdrawable *buf) { TRACE; if (buf) { struct gl_framebuffer *fb = &buf->Base; _mesa_free(buf->row); fb->DeletePending = GL_TRUE; _mesa_unreference_framebuffer(&fb); } } static void driSwapBuffers(__DRIdrawable *buf) { GET_CURRENT_CONTEXT(ctx); struct swrast_renderbuffer *frontrb = swrast_renderbuffer(buf->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer); struct swrast_renderbuffer *backrb = swrast_renderbuffer(buf->Base.Attachment[BUFFER_BACK_LEFT].Renderbuffer); __DRIscreen *screen = buf->driScreenPriv; TRACE; /* check for signle-buffered */ if (backrb == NULL) return; /* check if swapping currently bound buffer */ if (ctx && ctx->DrawBuffer == &(buf->Base)) { /* flush pending rendering */ _mesa_notifySwapBuffers(ctx); } screen->swrast_loader->putImage(buf, __DRI_SWRAST_IMAGE_OP_SWAP, 0, 0, frontrb->Base.Width, frontrb->Base.Height, backrb->Base.Data, buf->loaderPrivate); } /** * General device driver functions. */ static void get_window_size( GLframebuffer *fb, GLsizei *w, GLsizei *h ) { __DRIdrawable *buf = swrast_drawable(fb); __DRIscreen *screen = buf->driScreenPriv; int x, y; screen->swrast_loader->getDrawableInfo(buf, &x, &y, w, h, buf->loaderPrivate); } static void swrast_check_and_update_window_size( GLcontext *ctx, GLframebuffer *fb ) { GLsizei width, height; get_window_size(fb, &width, &height); if (fb->Width != width || fb->Height != height) { _mesa_resize_framebuffer(ctx, fb, width, height); } } static const GLubyte * get_string(GLcontext *ctx, GLenum pname) { (void) ctx; switch (pname) { case GL_VENDOR: return (const GLubyte *) "Mesa Project"; case GL_RENDERER: return (const GLubyte *) "Software Rasterizer"; default: return NULL; } } static void update_state( GLcontext *ctx, GLuint new_state ) { /* not much to do here - pass it on */ _swrast_InvalidateState( ctx, new_state ); _swsetup_InvalidateState( ctx, new_state ); _vbo_InvalidateState( ctx, new_state ); _tnl_InvalidateState( ctx, new_state ); } static void viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h) { GLframebuffer *draw = ctx->WinSysDrawBuffer; GLframebuffer *read = ctx->WinSysReadBuffer; swrast_check_and_update_window_size(ctx, draw); swrast_check_and_update_window_size(ctx, read); } static void swrast_init_driver_functions(struct dd_function_table *driver) { driver->GetString = get_string; driver->UpdateState = update_state; driver->GetBufferSize = NULL; driver->Viewport = viewport; } /** * Context-related functions. */ static __DRIcontext * driCreateNewContext(__DRIscreen *screen, const __DRIconfig *config, __DRIcontext *shared, void *data) { __DRIcontext *ctx; GLcontext *mesaCtx; struct dd_function_table functions; TRACE; ctx = _mesa_calloc(sizeof *ctx); if (!ctx) return NULL; ctx->loaderPrivate = data; ctx->driScreenPriv = screen; /* build table of device driver functions */ _mesa_init_driver_functions(&functions); swrast_init_driver_functions(&functions); if (!_mesa_initialize_context(&ctx->Base, &config->modes, shared ? &shared->Base : NULL, &functions, (void *) ctx)) { _mesa_free(ctx); return NULL; } mesaCtx = &ctx->Base; /* do bounds checking to prevent segfaults and server crashes! */ mesaCtx->Const.CheckArrayBounds = GL_TRUE; /* create module contexts */ _swrast_CreateContext( mesaCtx ); _vbo_CreateContext( mesaCtx ); _tnl_CreateContext( mesaCtx ); _swsetup_CreateContext( mesaCtx ); _swsetup_Wakeup( mesaCtx ); /* use default TCL pipeline */ { TNLcontext *tnl = TNL_CONTEXT(mesaCtx); tnl->Driver.RunPipeline = _tnl_run_pipeline; } _mesa_enable_sw_extensions(mesaCtx); _mesa_enable_1_3_extensions(mesaCtx); _mesa_enable_1_4_extensions(mesaCtx); _mesa_enable_1_5_extensions(mesaCtx); _mesa_enable_2_0_extensions(mesaCtx); _mesa_enable_2_1_extensions(mesaCtx); return ctx; } static void driDestroyContext(__DRIcontext *ctx) { GLcontext *mesaCtx; TRACE; if (ctx) { mesaCtx = &ctx->Base; _swsetup_DestroyContext( mesaCtx ); _swrast_DestroyContext( mesaCtx ); _tnl_DestroyContext( mesaCtx ); _vbo_DestroyContext( mesaCtx ); _mesa_destroy_context( mesaCtx ); } } static int driCopyContext(__DRIcontext *dst, __DRIcontext *src, unsigned long mask) { TRACE; _mesa_copy_context(&src->Base, &dst->Base, mask); return GL_TRUE; } static int driBindContext(__DRIcontext *ctx, __DRIdrawable *draw, __DRIdrawable *read) { GLcontext *mesaCtx; GLframebuffer *mesaDraw; GLframebuffer *mesaRead; TRACE; if (ctx) { if (!draw || !read) return GL_FALSE; mesaCtx = &ctx->Base; mesaDraw = &draw->Base; mesaRead = &read->Base; /* check for same context and buffer */ if (mesaCtx == _mesa_get_current_context() && mesaCtx->DrawBuffer == mesaDraw && mesaCtx->ReadBuffer == mesaRead) { return GL_TRUE; } _glapi_check_multithread(); swrast_check_and_update_window_size(mesaCtx, mesaDraw); if (read != draw) swrast_check_and_update_window_size(mesaCtx, mesaRead); _mesa_make_current( mesaCtx, mesaDraw, mesaRead ); } else { /* unbind */ _mesa_make_current( NULL, NULL, NULL ); } return GL_TRUE; } static int driUnbindContext(__DRIcontext *ctx) { TRACE; (void) ctx; return GL_TRUE; } static const __DRIcoreExtension driCoreExtension = { { __DRI_CORE, __DRI_CORE_VERSION }, NULL, /* driCreateNewScreen */ driDestroyScreen, driGetExtensions, driGetConfigAttrib, driIndexConfigAttrib, NULL, /* driCreateNewDrawable */ driDestroyDrawable, driSwapBuffers, driCreateNewContext, driCopyContext, driDestroyContext, driBindContext, driUnbindContext }; static const __DRIswrastExtension driSWRastExtension = { { __DRI_SWRAST, __DRI_SWRAST_VERSION }, driCreateNewScreen, driCreateNewDrawable }; /* This is the table of extensions that the loader will dlsym() for. */ PUBLIC const __DRIextension *__driDriverExtensions[] = { &driCoreExtension.base, &driSWRastExtension.base, NULL };