Mesa (master): util: add new fragment shaders to simple_shaders
Keith Whitwell
keithw at kemper.freedesktop.org
Tue Dec 15 18:17:38 UTC 2009
Module: Mesa
Branch: master
Commit: dff4c9ed559ae025d1d8fe7b9d1cea5a973c2225
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=dff4c9ed559ae025d1d8fe7b9d1cea5a973c2225
Author: Marek Olšák <maraeo at gmail.com>
Date: Sat Dec 12 06:34:29 2009 +0100
util: add new fragment shaders to simple_shaders
New shaders:
* Fragment shader which writes depth sampled from a texture
* Fragment shader which copies COLOR[0] to multiple render targets
Additional improvements:
* The fragment 'tex' shaders now take a sampler type (TGSI_TEXTURE_*)
so that they can sample from any type of texture, not only from a 2D one.
---
src/gallium/auxiliary/util/u_blit.c | 7 ++-
src/gallium/auxiliary/util/u_gen_mipmap.c | 2 +-
src/gallium/auxiliary/util/u_simple_shaders.c | 70 ++++++++++++++++++++++---
src/gallium/auxiliary/util/u_simple_shaders.h | 13 ++++-
4 files changed, 80 insertions(+), 12 deletions(-)
diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c
index abe1de3..c9050ca 100644
--- a/src/gallium/auxiliary/util/u_blit.c
+++ b/src/gallium/auxiliary/util/u_blit.c
@@ -126,7 +126,8 @@ util_create_blit(struct pipe_context *pipe, struct cso_context *cso)
}
/* fragment shader */
- ctx->fs[TGSI_WRITEMASK_XYZW] = util_make_fragment_tex_shader(pipe);
+ ctx->fs[TGSI_WRITEMASK_XYZW] =
+ util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_2D);
ctx->vbuf = NULL;
/* init vertex data that doesn't change */
@@ -420,7 +421,9 @@ util_blit_pixels_writemask(struct blit_state *ctx,
cso_set_sampler_textures(ctx->cso, 1, &tex);
if (ctx->fs[writemask] == NULL)
- ctx->fs[writemask] = util_make_fragment_tex_shader_writemask(pipe, writemask);
+ ctx->fs[writemask] =
+ util_make_fragment_tex_shader_writemask(pipe, TGSI_TEXTURE_2D,
+ writemask);
/* shaders */
cso_set_fragment_shader_handle(ctx->cso, ctx->fs[writemask]);
diff --git a/src/gallium/auxiliary/util/u_gen_mipmap.c b/src/gallium/auxiliary/util/u_gen_mipmap.c
index 83263d9..1728e66 100644
--- a/src/gallium/auxiliary/util/u_gen_mipmap.c
+++ b/src/gallium/auxiliary/util/u_gen_mipmap.c
@@ -1317,7 +1317,7 @@ util_create_gen_mipmap(struct pipe_context *pipe,
}
/* fragment shader */
- ctx->fs = util_make_fragment_tex_shader(pipe);
+ ctx->fs = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_2D);
/* vertex data that doesn't change */
for (i = 0; i < 4; i++) {
diff --git a/src/gallium/auxiliary/util/u_simple_shaders.c b/src/gallium/auxiliary/util/u_simple_shaders.c
index 1c8b157..8172ead 100644
--- a/src/gallium/auxiliary/util/u_simple_shaders.c
+++ b/src/gallium/auxiliary/util/u_simple_shaders.c
@@ -2,6 +2,7 @@
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
+ * Copyright 2009 Marek Olšák <maraeo at gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
@@ -30,6 +31,7 @@
* Simple vertex/fragment shader generators.
*
* @author Brian Paul
+ Marek Olšák
*/
@@ -87,6 +89,7 @@ util_make_vertex_passthrough_shader(struct pipe_context *pipe,
*/
void *
util_make_fragment_tex_shader_writemask(struct pipe_context *pipe,
+ unsigned tex_target,
unsigned writemask )
{
struct ureg_program *ureg;
@@ -116,20 +119,63 @@ util_make_fragment_tex_shader_writemask(struct pipe_context *pipe,
ureg_TEX( ureg,
ureg_writemask(out, writemask),
- TGSI_TEXTURE_2D, tex, sampler );
+ tex_target, tex, sampler );
ureg_END( ureg );
return ureg_create_shader_and_destroy( ureg, pipe );
}
void *
-util_make_fragment_tex_shader(struct pipe_context *pipe )
+util_make_fragment_tex_shader(struct pipe_context *pipe, unsigned tex_target )
{
return util_make_fragment_tex_shader_writemask( pipe,
+ tex_target,
TGSI_WRITEMASK_XYZW );
}
+/**
+ * Make a simple fragment texture shader which reads an X component from
+ * a texture and writes it as depth.
+ */
+void *
+util_make_fragment_tex_shader_writedepth(struct pipe_context *pipe,
+ unsigned tex_target)
+{
+ struct ureg_program *ureg;
+ struct ureg_src sampler;
+ struct ureg_src tex;
+ struct ureg_dst out, depth;
+ struct ureg_src imm;
+ ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );
+ if (ureg == NULL)
+ return NULL;
+
+ sampler = ureg_DECL_sampler( ureg, 0 );
+
+ tex = ureg_DECL_fs_input( ureg,
+ TGSI_SEMANTIC_GENERIC, 0,
+ TGSI_INTERPOLATE_PERSPECTIVE );
+
+ out = ureg_DECL_output( ureg,
+ TGSI_SEMANTIC_COLOR,
+ 0 );
+
+ depth = ureg_DECL_output( ureg,
+ TGSI_SEMANTIC_POSITION,
+ 0 );
+
+ imm = ureg_imm4f( ureg, 0, 0, 0, 1 );
+
+ ureg_MOV( ureg, out, imm );
+
+ ureg_TEX( ureg,
+ ureg_writemask(depth, TGSI_WRITEMASK_Z),
+ tex_target, tex, sampler );
+ ureg_END( ureg );
+
+ return ureg_create_shader_and_destroy( ureg, pipe );
+}
/**
* Make simple fragment color pass-through shader.
@@ -137,9 +183,18 @@ util_make_fragment_tex_shader(struct pipe_context *pipe )
void *
util_make_fragment_passthrough_shader(struct pipe_context *pipe)
{
+ return util_make_fragment_clonecolor_shader(pipe, 1);
+}
+
+void *
+util_make_fragment_clonecolor_shader(struct pipe_context *pipe, int num_cbufs)
+{
struct ureg_program *ureg;
struct ureg_src src;
- struct ureg_dst dst;
+ struct ureg_dst dst[8];
+ int i;
+
+ assert(num_cbufs <= 8);
ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );
if (ureg == NULL)
@@ -148,12 +203,13 @@ util_make_fragment_passthrough_shader(struct pipe_context *pipe)
src = ureg_DECL_fs_input( ureg, TGSI_SEMANTIC_COLOR, 0,
TGSI_INTERPOLATE_PERSPECTIVE );
- dst = ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, 0 );
+ for (i = 0; i < num_cbufs; i++)
+ dst[i] = ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, i );
+
+ for (i = 0; i < num_cbufs; i++)
+ ureg_MOV( ureg, dst[i], src );
- ureg_MOV( ureg, dst, src );
ureg_END( ureg );
return ureg_create_shader_and_destroy( ureg, pipe );
}
-
-
diff --git a/src/gallium/auxiliary/util/u_simple_shaders.h b/src/gallium/auxiliary/util/u_simple_shaders.h
index d2e80d6..6e76094 100644
--- a/src/gallium/auxiliary/util/u_simple_shaders.h
+++ b/src/gallium/auxiliary/util/u_simple_shaders.h
@@ -51,16 +51,25 @@ util_make_vertex_passthrough_shader(struct pipe_context *pipe,
extern void *
util_make_fragment_tex_shader_writemask(struct pipe_context *pipe,
- unsigned writemask );
+ unsigned tex_target,
+ unsigned writemask);
extern void *
-util_make_fragment_tex_shader(struct pipe_context *pipe);
+util_make_fragment_tex_shader(struct pipe_context *pipe, unsigned tex_target);
+
+
+extern void *
+util_make_fragment_tex_shader_writedepth(struct pipe_context *pipe,
+ unsigned tex_target);
extern void *
util_make_fragment_passthrough_shader(struct pipe_context *pipe);
+extern void *
+util_make_fragment_clonecolor_shader(struct pipe_context *pipe, int num_cbufs);
+
#ifdef __cplusplus
}
#endif
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