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authorBrian Paul <brian.paul@tungstengraphics.com>2008-05-14 16:09:46 -0600
committerBrian Paul <brian.paul@tungstengraphics.com>2008-05-14 16:09:46 -0600
commitade508312c701ce89d3c2cd717994dbbabb4f207 (patch)
tree7c7a35935143d90c99820025a8887c5606041db6 /src/mesa/swrast
parentc807c1a23fc918591e9d2f6f26c4e071a725bced (diff)
Updated GLSL uniform/sampler handling from gallium-0.1 branch
Previously, the shader linker combined the uniforms used by the vertex and fragment shaders into a combined set of uniforms. This made the implementation of glUniform*() simple, but was rather inefficient otherwise. Now each shader gets its own set of uniforms (no more modelview matrix showing up in the fragment shader uniforms, for example). cherry-picked by hand from gallium-0.1 branch
Diffstat (limited to 'src/mesa/swrast')
-rw-r--r--src/mesa/swrast/s_fragprog.c14
-rw-r--r--src/mesa/swrast/s_span.c1
2 files changed, 9 insertions, 6 deletions
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c
index 2dfc033d50..ecace9c502 100644
--- a/src/mesa/swrast/s_fragprog.c
+++ b/src/mesa/swrast/s_fragprog.c
@@ -33,18 +33,19 @@
/**
- * Fetch a texel.
+ * Fetch a texel with given lod.
+ * Called via machine->FetchTexelLod()
*/
static void
-fetch_texel( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda,
- GLuint unit, GLfloat color[4] )
+fetch_texel_lod( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda,
+ GLuint unit, GLfloat color[4] )
{
GLchan rgba[4];
SWcontext *swrast = SWRAST_CONTEXT(ctx);
const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod);
-
+
/* XXX use a float-valued TextureSample routine here!!! */
swrast->TextureSample[unit](ctx, texObj, 1, (const GLfloat (*)[4]) texcoord,
&lambda, &rgba);
@@ -58,6 +59,7 @@ fetch_texel( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda,
/**
* Fetch a texel with the given partial derivatives to compute a level
* of detail in the mipmap.
+ * Called via machine->FetchTexelDeriv()
*/
static void
fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
@@ -117,6 +119,8 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine,
machine->DerivY = (GLfloat (*)[4]) span->attrStepY;
machine->NumDeriv = FRAG_ATTRIB_MAX;
+ machine->Samplers = program->Base.SamplerUnits;
+
/* if running a GLSL program (not ARB_fragment_program) */
if (ctx->Shader.CurrentProgram) {
/* Store front/back facing value in register FOGC.Y */
@@ -134,7 +138,7 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine,
/* init call stack */
machine->StackDepth = 0;
- machine->FetchTexelLod = fetch_texel;
+ machine->FetchTexelLod = fetch_texel_lod;
machine->FetchTexelDeriv = fetch_texel_deriv;
}
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index 656a90a99a..4c58f8de87 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1401,7 +1401,6 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
* Write to renderbuffers
*/
{
- const struct gl_fragment_program *fp = ctx->FragmentProgram._Current;
const GLuint numBuffers = fb->_NumColorDrawBuffers;
const GLboolean multiFragOutputs = numBuffers > 1;
GLuint buf;