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authorJosé Fonseca <jfonseca@vmware.com>2009-07-26 23:44:38 +0100
committerJosé Fonseca <jfonseca@vmware.com>2009-08-29 09:21:15 +0100
commit946f432a08112148d743eb9faf6b27bb8cc7fa76 (patch)
treed0648a6e40f6aba20322631c139c28b9654f5299 /src/gallium/drivers/llvmpipe/lp_screen.c
parent1814d6b49c8144180231c3e43ff6b5dc9c32e12b (diff)
llvmpipe: Fork softpipe for experimentation with llvm.
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_screen.c')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_screen.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
new file mode 100644
index 00000000000..b71f15678e7
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -0,0 +1,190 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+
+#include "util/u_memory.h"
+#include "util/u_simple_screen.h"
+#include "pipe/internal/p_winsys_screen.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_screen.h"
+
+#include "lp_texture.h"
+#include "lp_winsys.h"
+#include "lp_screen.h"
+
+
+static const char *
+llvmpipe_get_vendor(struct pipe_screen *screen)
+{
+ return "Tungsten Graphics, Inc.";
+}
+
+
+static const char *
+llvmpipe_get_name(struct pipe_screen *screen)
+{
+ return "llvmpipe";
+}
+
+
+static int
+llvmpipe_get_param(struct pipe_screen *screen, int param)
+{
+ switch (param) {
+ case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
+ return PIPE_MAX_SAMPLERS;
+ case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
+ return PIPE_MAX_SAMPLERS;
+ case PIPE_CAP_NPOT_TEXTURES:
+ return 1;
+ case PIPE_CAP_TWO_SIDED_STENCIL:
+ return 1;
+ case PIPE_CAP_GLSL:
+ return 1;
+ case PIPE_CAP_S3TC:
+ return 0;
+ case PIPE_CAP_ANISOTROPIC_FILTER:
+ return 0;
+ case PIPE_CAP_POINT_SPRITE:
+ return 1;
+ case PIPE_CAP_MAX_RENDER_TARGETS:
+ return PIPE_MAX_COLOR_BUFS;
+ case PIPE_CAP_OCCLUSION_QUERY:
+ return 1;
+ case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
+ return 1;
+ case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
+ return 1;
+ case PIPE_CAP_TEXTURE_SHADOW_MAP:
+ return 1;
+ case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
+ return 13; /* max 4Kx4K */
+ case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
+ return 8; /* max 128x128x128 */
+ case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
+ return 13; /* max 4Kx4K */
+ case PIPE_CAP_TGSI_CONT_SUPPORTED:
+ return 1;
+ case PIPE_CAP_BLEND_EQUATION_SEPARATE:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+
+static float
+llvmpipe_get_paramf(struct pipe_screen *screen, int param)
+{
+ switch (param) {
+ case PIPE_CAP_MAX_LINE_WIDTH:
+ /* fall-through */
+ case PIPE_CAP_MAX_LINE_WIDTH_AA:
+ return 255.0; /* arbitrary */
+ case PIPE_CAP_MAX_POINT_WIDTH:
+ /* fall-through */
+ case PIPE_CAP_MAX_POINT_WIDTH_AA:
+ return 255.0; /* arbitrary */
+ case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
+ return 16.0; /* not actually signficant at this time */
+ case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
+ return 16.0; /* arbitrary */
+ default:
+ return 0;
+ }
+}
+
+
+/**
+ * Query format support for creating a texture, drawing surface, etc.
+ * \param format the format to test
+ * \param type one of PIPE_TEXTURE, PIPE_SURFACE
+ */
+static boolean
+llvmpipe_is_format_supported( struct pipe_screen *screen,
+ enum pipe_format format,
+ enum pipe_texture_target target,
+ unsigned tex_usage,
+ unsigned geom_flags )
+{
+ assert(target == PIPE_TEXTURE_1D ||
+ target == PIPE_TEXTURE_2D ||
+ target == PIPE_TEXTURE_3D ||
+ target == PIPE_TEXTURE_CUBE);
+
+ switch(format) {
+ case PIPE_FORMAT_DXT1_RGB:
+ case PIPE_FORMAT_DXT1_RGBA:
+ case PIPE_FORMAT_DXT3_RGBA:
+ case PIPE_FORMAT_DXT5_RGBA:
+ return FALSE;
+ default:
+ return TRUE;
+ }
+}
+
+
+static void
+llvmpipe_destroy_screen( struct pipe_screen *screen )
+{
+ struct pipe_winsys *winsys = screen->winsys;
+
+ if(winsys->destroy)
+ winsys->destroy(winsys);
+
+ FREE(screen);
+}
+
+
+
+/**
+ * Create a new pipe_screen object
+ * Note: we're not presently subclassing pipe_screen (no llvmpipe_screen).
+ */
+struct pipe_screen *
+llvmpipe_create_screen(struct pipe_winsys *winsys)
+{
+ struct llvmpipe_screen *screen = CALLOC_STRUCT(llvmpipe_screen);
+
+ if (!screen)
+ return NULL;
+
+ screen->base.winsys = winsys;
+
+ screen->base.destroy = llvmpipe_destroy_screen;
+
+ screen->base.get_name = llvmpipe_get_name;
+ screen->base.get_vendor = llvmpipe_get_vendor;
+ screen->base.get_param = llvmpipe_get_param;
+ screen->base.get_paramf = llvmpipe_get_paramf;
+ screen->base.is_format_supported = llvmpipe_is_format_supported;
+
+ llvmpipe_init_screen_texture_funcs(&screen->base);
+ u_simple_screen_init(&screen->base);
+
+ return &screen->base;
+}