Checkpoint glsl compiler work: sampler uniforms now implemented, linked properly.

12 files changed, 359 insertions, 284 deletions

diff --git a/src/mesa/shader/shader_api.c b/src/mesa/shader/shader_api.c
index d6dacdd679..bd258f8737 100644
--- a/src/mesa/shader/shader_api.c
+++ b/src/mesa/shader/shader_api.c
@@ -741,7 +741,8 @@ _mesa_get_uniform_location(GLcontext *ctx, GLuint program, const GLchar *name)
           * We need to handle things like "e.c[0].b" as seen in the
           * GLSL orange book, page 189.
           */
-         if (u->Type == PROGRAM_UNIFORM && !strcmp(u->Name, name)) {
+         if ((u->Type == PROGRAM_UNIFORM ||
+              u->Type == PROGRAM_SAMPLER) && !strcmp(u->Name, name)) {
             return loc;
          }
       }
@@ -925,6 +926,12 @@ _mesa_uniform(GLcontext *ctx, GLint location, GLsizei count,
          return;
       }
    }
+
+   if (shProg->Uniforms->Parameters[location].Type == PROGRAM_SAMPLER) {
+      _slang_resolve_samplers(shProg, &shProg->VertexProgram->Base);
+      _slang_resolve_samplers(shProg, &shProg->FragmentProgram->Base);
+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+   }
 }
 
 
diff --git a/src/mesa/shader/slang/library/slang_common_builtin.gc b/src/mesa/shader/slang/library/slang_common_builtin.gc
index 44e059f5a0..52f5b96d88 100644
--- a/src/mesa/shader/slang/library/slang_common_builtin.gc
+++ b/src/mesa/shader/slang/library/slang_common_builtin.gc
@@ -1611,36 +1611,43 @@ bvec4 not (const bvec4 v)
 
 
 
-//
-// 8.7 Texture Lookup Functions
-//
+//// Texture Lookup Functions  (for both fragment and vertex shaders)
 
-vec4 texture1D (sampler1D sampler, float coord) {
-    vec4 texel;
-    __asm vec4_tex1d texel, sampler, coord, 0.0;
-    return texel;
+vec4 texture1D(const sampler1D sampler, const float coord)
+{
+    __asm vec4_tex1d __retVal, coord; // XXX sampler
 }
 
-vec4 texture1DProj (sampler1D sampler, vec2 coord) {
-    return texture1D (sampler, coord.s / coord.t);
+vec4 texture1DProj(const sampler1D sampler, const vec2 coord)
+{
+   float pcoord = coord.s / coord.t;
+    __asm vec4_tex1d __retVal, pcoord; // XXX sampler
 }
 
-vec4 texture1DProj (sampler1D sampler, vec4 coord) {
-    return texture1D (sampler, coord.s / coord.q);
+vec4 texture1DProj(const sampler1D sampler, const vec4 coord)
+{
+   float pcoord = coord.s / coord.q;
+    __asm vec4_tex1d __retVal, pcoord; // XXX sampler
 }
 
+
 vec4 texture2D(const sampler2D sampler, const vec2 coord)
 {
-    __asm vec4_tex2d __retVal, coord; // XXX sampler
+    __asm vec4_tex2d __retVal, sampler, coord; // XXX sampler
 }
 
-vec4 texture2DProj (sampler2D sampler, vec3 coord) {
-    return texture2D (sampler, vec2 (coord.s / coord.p, coord.t / coord.p));
-}
+//vec4 texture2DProj(const sampler2D sampler, const vec3 coord)
+//{
+//   vec2 pcoord = coord.st / coord.p;
+//    __asm vec4_tex2d __retVal, pcoord; // XXX sampler
+//}
+
+//vec4 texture2DProj(const sampler2D sampler, const vec4 coord)
+//{
+//   vec2 pcoord = coord.st / coord.q;
+//    __asm vec4_tex2d __retVal, pcoord; // XXX sampler
+//}
 
-vec4 texture2DProj (sampler2D sampler, vec4 coord) {
-    return texture2D (sampler, vec2 (coord.s / coord.q, coord.t / coord.q));
-}
 
 vec4 texture3D (sampler3D sampler, vec3 coord) {
     vec4 texel;
diff --git a/src/mesa/shader/slang/library/slang_common_builtin_gc.h b/src/mesa/shader/slang/library/slang_common_builtin_gc.h
index 69c1960c73..e418f53213 100644
--- a/src/mesa/shader/slang/library/slang_common_builtin_gc.h
+++ b/src/mesa/shader/slang/library/slang_common_builtin_gc.h
@@ -670,100 +670,93 @@
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 51,52,0,0,0,17,55,0,54,54,0,0,0,0,46,0,0,0,58,110,111,105,115,101,49,0,18,120,0,58,118,101,99,50,0,
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-12,120,0,0,0,1,8,58,118,101,99,51,0,58,110,111,105,115,101,49,0,18,120,0,0,0,0,58,110,111,105,115,
-101,49,0,18,120,0,58,118,101,99,52,0,17,49,57,0,51,52,0,0,0,17,55,0,54,54,0,0,0,17,51,0,50,51,0,0,
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-49,0,18,120,0,0,0,0,58,110,111,105,115,101,49,0,18,120,0,17,49,57,0,51,52,0,0,46,0,0,0,58,110,111,
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-118,101,99,50,0,17,53,0,52,55,0,0,0,17,49,55,0,56,53,0,0,0,0,46,0,0,0,58,110,111,105,115,101,49,0,
-18,120,0,58,118,101,99,50,0,17,50,51,0,53,52,0,0,0,17,50,57,0,49,49,0,0,0,0,46,0,0,0,0,0,0,1,0,12,
-0,110,111,105,115,101,52,0,1,0,0,11,120,0,0,0,1,8,58,118,101,99,52,0,58,110,111,105,115,101,49,0,
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-115,101,49,0,18,120,0,58,118,101,99,51,0,17,50,51,0,53,52,0,0,0,17,50,57,0,49,49,0,0,0,17,51,49,0,
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-58,118,101,99,52,0,17,50,51,0,53,52,0,0,0,17,50,57,0,49,49,0,0,0,17,51,49,0,57,49,0,0,0,17,51,55,0,
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+120,0,58,118,101,99,51,0,17,50,51,0,53,52,0,0,0,17,50,57,0,49,49,0,0,0,17,51,49,0,57,49,0,0,0,0,46,
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+105,115,101,49,0,18,120,0,0,0,0,58,110,111,105,115,101,49,0,18,120,0,58,118,101,99,52,0,17,49,57,0,
+51,52,0,0,0,17,55,0,54,54,0,0,0,17,51,0,50,51,0,0,0,17,50,0,55,55,0,0,0,0,46,0,0,0,58,110,111,105,
+115,101,49,0,18,120,0,58,118,101,99,52,0,17,53,0,52,55,0,0,0,17,49,55,0,56,53,0,0,0,17,49,49,0,48,
+52,0,0,0,17,49,51,0,49,57,0,0,0,0,46,0,0,0,58,110,111,105,115,101,49,0,18,120,0,58,118,101,99,52,0,
+17,50,51,0,53,52,0,0,0,17,50,57,0,49,49,0,0,0,17,51,49,0,57,49,0,0,0,17,51,55,0,52,56,0,0,0,0,46,0,
+0,0,0,0,0,0
diff --git a/src/mesa/shader/slang/library/slang_fragment_builtin.gc b/src/mesa/shader/slang/library/slang_fragment_builtin.gc
index 373b42de1d..474535bfb1 100644
--- a/src/mesa/shader/slang/library/slang_fragment_builtin.gc
+++ b/src/mesa/shader/slang/library/slang_fragment_builtin.gc
@@ -60,19 +60,19 @@ vec4 texture1DProj (sampler1D sampler, vec4 coord, float bias) {
     return texture1D (sampler, coord.s / coord.q, bias);
 }
 
-vec4 texture2D (sampler2D sampler, vec2 coord, float bias) {
-    vec4 texel;
-    __asm vec4_tex2d texel, sampler, coord, bias;
-    return texel;
-}
-
-vec4 texture2DProj (sampler2D sampler, vec3 coord, float bias) {
-    return texture2D (sampler, vec2 (coord.s / coord.p, coord.t / coord.p), bias);
-}
-
-vec4 texture2DProj (sampler2D sampler, vec4 coord, float bias) {
-    return texture2D (sampler, vec2 (coord.s / coord.q, coord.t / coord.q), bias);
-}
+//vec4 texture2D (sampler2D sampler, vec2 coord, float bias) {
+//    vec4 texel;
+//    __asm vec4_tex2d texel, sampler, coord, bias;
+//    return texel;
+//}
+
+//vec4 texture2DProj (sampler2D sampler, vec3 coord, float bias) {
+//    return texture2D (sampler, vec2 (coord.s / coord.p, coord.t / coord.p), bias);
+//}
+
+//vec4 texture2DProj (sampler2D sampler, vec4 coord, float bias) {
+//    return texture2D (sampler, vec2 (coord.s / coord.q, coord.t / coord.q), bias);
+//}
 
 vec4 texture3D (sampler3D sampler, vec3 coord, float bias) {
     vec4 texel;
diff --git a/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h b/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h
index b7f1d3816c..69b90fb9da 100644
--- a/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h
+++ b/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h
@@ -20,60 +20,47 @@
 1,0,0,16,115,97,109,112,108,101,114,0,0,1,0,0,12,99,111,111,114,100,0,0,1,0,0,9,98,105,97,115,0,0,
 0,1,8,58,116,101,120,116,117,114,101,49,68,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,
 100,0,59,115,0,18,99,111,111,114,100,0,59,113,0,49,0,18,98,105,97,115,0,0,0,0,0,1,0,12,0,116,101,
-120,116,117,114,101,50,68,0,1,0,0,17,115,97,109,112,108,101,114,0,0,1,0,0,10,99,111,111,114,100,0,
+120,116,117,114,101,51,68,0,1,0,0,18,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,
 0,1,0,0,9,98,105,97,115,0,0,0,1,3,2,0,12,1,116,101,120,101,108,0,0,0,4,118,101,99,52,95,116,101,
-120,50,100,0,18,116,101,120,101,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,0,
-0,18,98,105,97,115,0,0,0,8,18,116,101,120,101,108,0,0,0,1,0,12,0,116,101,120,116,117,114,101,50,68,
-80,114,111,106,0,1,0,0,17,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,1,0,0,9,
-98,105,97,115,0,0,0,1,8,58,116,101,120,116,117,114,101,50,68,0,18,115,97,109,112,108,101,114,0,0,
-58,118,101,99,50,0,18,99,111,111,114,100,0,59,115,0,18,99,111,111,114,100,0,59,112,0,49,0,18,99,
-111,111,114,100,0,59,116,0,18,99,111,111,114,100,0,59,112,0,49,0,0,0,18,98,105,97,115,0,0,0,0,0,1,
-0,12,0,116,101,120,116,117,114,101,50,68,80,114,111,106,0,1,0,0,17,115,97,109,112,108,101,114,0,0,
-1,0,0,12,99,111,111,114,100,0,0,1,0,0,9,98,105,97,115,0,0,0,1,8,58,116,101,120,116,117,114,101,50,
-68,0,18,115,97,109,112,108,101,114,0,0,58,118,101,99,50,0,18,99,111,111,114,100,0,59,115,0,18,99,
-111,111,114,100,0,59,113,0,49,0,18,99,111,111,114,100,0,59,116,0,18,99,111,111,114,100,0,59,113,0,
-49,0,0,0,18,98,105,97,115,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,51,68,0,1,0,0,18,115,97,
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-116,101,120,101,108,0,0,0,4,118,101,99,52,95,116,101,120,51,100,0,18,116,101,120,101,108,0,0,18,
-115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,0,0,18,98,105,97,115,0,0,0,8,18,116,101,120,
-101,108,0,0,0,1,0,12,0,116,101,120,116,117,114,101,51,68,80,114,111,106,0,1,0,0,18,115,97,109,112,
-108,101,114,0,0,1,0,0,12,99,111,111,114,100,0,0,1,0,0,9,98,105,97,115,0,0,0,1,8,58,116,101,120,116,
-117,114,101,51,68,0,18,115,97,109,112,108,101,114,0,0,58,118,101,99,51,0,18,99,111,111,114,100,0,
-59,115,0,18,99,111,111,114,100,0,59,113,0,49,0,18,99,111,111,114,100,0,59,116,0,18,99,111,111,114,
-100,0,59,113,0,49,0,18,99,111,111,114,100,0,59,112,0,18,99,111,111,114,100,0,59,113,0,49,0,0,0,18,
-98,105,97,115,0,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,67,117,98,101,0,1,0,0,19,115,97,109,
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-115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,0,0,18,98,105,97,115,0,0,0,8,18,116,101,120,
-101,108,0,0,0,1,0,12,0,115,104,97,100,111,119,49,68,0,1,0,0,20,115,97,109,112,108,101,114,0,0,1,0,
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-118,101,99,52,95,115,104,97,100,49,100,0,18,116,101,120,101,108,0,0,18,115,97,109,112,108,101,114,
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-104,97,100,111,119,49,68,80,114,111,106,0,1,0,0,20,115,97,109,112,108,101,114,0,0,1,0,0,12,99,111,
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-112,108,101,114,0,0,58,118,101,99,51,0,18,99,111,111,114,100,0,59,115,0,18,99,111,111,114,100,0,59,
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-112,108,101,114,0,0,18,99,111,111,114,100,0,0,18,98,105,97,115,0,0,0,8,18,116,101,120,101,108,0,0,
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-0,0,12,99,111,111,114,100,0,0,1,0,0,9,98,105,97,115,0,0,0,1,8,58,115,104,97,100,111,119,50,68,0,18,
-115,97,109,112,108,101,114,0,0,58,118,101,99,51,0,18,99,111,111,114,100,0,59,115,0,18,99,111,111,
-114,100,0,59,113,0,49,0,18,99,111,111,114,100,0,59,116,0,18,99,111,111,114,100,0,59,113,0,49,0,18,
-99,111,111,114,100,0,59,112,0,18,99,111,111,114,100,0,59,113,0,49,0,0,0,18,98,105,97,115,0,0,0,0,0,
-1,0,9,0,100,70,100,120,0,1,0,0,9,112,0,0,0,1,8,17,48,0,48,48,49,0,0,0,0,1,0,10,0,100,70,100,120,0,
-1,0,0,10,112,0,0,0,1,8,58,118,101,99,50,0,17,48,0,48,48,49,0,0,0,0,0,0,1,0,11,0,100,70,100,120,0,1,
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-0,12,112,0,0,0,1,8,58,118,101,99,52,0,17,48,0,48,48,49,0,0,0,0,0,0,1,0,9,0,100,70,100,121,0,1,0,0,
-9,112,0,0,0,1,8,17,48,0,48,48,49,0,0,0,0,1,0,10,0,100,70,100,121,0,1,0,0,10,112,0,0,0,1,8,58,118,
-101,99,50,0,17,48,0,48,48,49,0,0,0,0,0,0,1,0,11,0,100,70,100,121,0,1,0,0,11,112,0,0,0,1,8,58,118,
-101,99,51,0,17,48,0,48,48,49,0,0,0,0,0,0,1,0,12,0,100,70,100,121,0,1,0,0,12,112,0,0,0,1,8,58,118,
-101,99,52,0,17,48,0,48,48,49,0,0,0,0,0,0,1,0,9,0,102,119,105,100,116,104,0,1,0,0,9,112,0,0,0,1,8,
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-100,121,0,18,112,0,0,0,0,0,46,0,0,0
+120,51,100,0,18,116,101,120,101,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,0,
+0,18,98,105,97,115,0,0,0,8,18,116,101,120,101,108,0,0,0,1,0,12,0,116,101,120,116,117,114,101,51,68,
+80,114,111,106,0,1,0,0,18,115,97,109,112,108,101,114,0,0,1,0,0,12,99,111,111,114,100,0,0,1,0,0,9,
+98,105,97,115,0,0,0,1,8,58,116,101,120,116,117,114,101,51,68,0,18,115,97,109,112,108,101,114,0,0,
+58,118,101,99,51,0,18,99,111,111,114,100,0,59,115,0,18,99,111,111,114,100,0,59,113,0,49,0,18,99,
+111,111,114,100,0,59,116,0,18,99,111,111,114,100,0,59,113,0,49,0,18,99,111,111,114,100,0,59,112,0,
+18,99,111,111,114,100,0,59,113,0,49,0,0,0,18,98,105,97,115,0,0,0,0,0,1,0,12,0,116,101,120,116,117,
+114,101,67,117,98,101,0,1,0,0,19,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,1,
+0,0,9,98,105,97,115,0,0,0,1,3,2,0,12,1,116,101,120,101,108,0,0,0,4,118,101,99,52,95,116,101,120,99,
+117,98,101,0,18,116,101,120,101,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,0,
+0,18,98,105,97,115,0,0,0,8,18,116,101,120,101,108,0,0,0,1,0,12,0,115,104,97,100,111,119,49,68,0,1,
+0,0,20,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,1,0,0,9,98,105,97,115,0,0,0,
+1,3,2,0,12,1,116,101,120,101,108,0,0,0,4,118,101,99,52,95,115,104,97,100,49,100,0,18,116,101,120,
+101,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,0,0,18,98,105,97,115,0,0,0,8,
+18,116,101,120,101,108,0,0,0,1,0,12,0,115,104,97,100,111,119,49,68,80,114,111,106,0,1,0,0,20,115,
+97,109,112,108,101,114,0,0,1,0,0,12,99,111,111,114,100,0,0,1,0,0,9,98,105,97,115,0,0,0,1,8,58,115,
+104,97,100,111,119,49,68,0,18,115,97,109,112,108,101,114,0,0,58,118,101,99,51,0,18,99,111,111,114,
+100,0,59,115,0,18,99,111,111,114,100,0,59,113,0,49,0,17,48,0,48,0,0,0,18,99,111,111,114,100,0,59,
+112,0,18,99,111,111,114,100,0,59,113,0,49,0,0,0,18,98,105,97,115,0,0,0,0,0,1,0,12,0,115,104,97,100,
+111,119,50,68,0,1,0,0,21,115,97,109,112,108,101,114,0,0,1,0,0,11,99,111,111,114,100,0,0,1,0,0,9,98,
+105,97,115,0,0,0,1,3,2,0,12,1,116,101,120,101,108,0,0,0,4,118,101,99,52,95,115,104,97,100,50,100,0,
+18,116,101,120,101,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,0,0,18,98,105,
+97,115,0,0,0,8,18,116,101,120,101,108,0,0,0,1,0,12,0,115,104,97,100,111,119,50,68,80,114,111,106,0,
+1,0,0,21,115,97,109,112,108,101,114,0,0,1,0,0,12,99,111,111,114,100,0,0,1,0,0,9,98,105,97,115,0,0,
+0,1,8,58,115,104,97,100,111,119,50,68,0,18,115,97,109,112,108,101,114,0,0,58,118,101,99,51,0,18,99,
+111,111,114,100,0,59,115,0,18,99,111,111,114,100,0,59,113,0,49,0,18,99,111,111,114,100,0,59,116,0,
+18,99,111,111,114,100,0,59,113,0,49,0,18,99,111,111,114,100,0,59,112,0,18,99,111,111,114,100,0,59,
+113,0,49,0,0,0,18,98,105,97,115,0,0,0,0,0,1,0,9,0,100,70,100,120,0,1,0,0,9,112,0,0,0,1,8,17,48,0,
+48,48,49,0,0,0,0,1,0,10,0,100,70,100,120,0,1,0,0,10,112,0,0,0,1,8,58,118,101,99,50,0,17,48,0,48,48,
+49,0,0,0,0,0,0,1,0,11,0,100,70,100,120,0,1,0,0,11,112,0,0,0,1,8,58,118,101,99,51,0,17,48,0,48,48,
+49,0,0,0,0,0,0,1,0,12,0,100,70,100,120,0,1,0,0,12,112,0,0,0,1,8,58,118,101,99,52,0,17,48,0,48,48,
+49,0,0,0,0,0,0,1,0,9,0,100,70,100,121,0,1,0,0,9,112,0,0,0,1,8,17,48,0,48,48,49,0,0,0,0,1,0,10,0,
+100,70,100,121,0,1,0,0,10,112,0,0,0,1,8,58,118,101,99,50,0,17,48,0,48,48,49,0,0,0,0,0,0,1,0,11,0,
+100,70,100,121,0,1,0,0,11,112,0,0,0,1,8,58,118,101,99,51,0,17,48,0,48,48,49,0,0,0,0,0,0,1,0,12,0,
+100,70,100,121,0,1,0,0,12,112,0,0,0,1,8,58,118,101,99,52,0,17,48,0,48,48,49,0,0,0,0,0,0,1,0,9,0,
+102,119,105,100,116,104,0,1,0,0,9,112,0,0,0,1,8,58,97,98,115,0,58,100,70,100,120,0,18,112,0,0,0,0,
+0,58,97,98,115,0,58,100,70,100,121,0,18,112,0,0,0,0,0,46,0,0,1,0,10,0,102,119,105,100,116,104,0,1,
+0,0,10,112,0,0,0,1,8,58,97,98,115,0,58,100,70,100,120,0,18,112,0,0,0,0,0,58,97,98,115,0,58,100,70,
+100,121,0,18,112,0,0,0,0,0,46,0,0,1,0,11,0,102,119,105,100,116,104,0,1,0,0,11,112,0,0,0,1,8,58,97,
+98,115,0,58,100,70,100,120,0,18,112,0,0,0,0,0,58,97,98,115,0,58,100,70,100,121,0,18,112,0,0,0,0,0,
+46,0,0,1,0,12,0,102,119,105,100,116,104,0,1,0,0,12,112,0,0,0,1,8,58,97,98,115,0,58,100,70,100,120,
+0,18,112,0,0,0,0,0,58,97,98,115,0,58,100,70,100,121,0,18,112,0,0,0,0,0,46,0,0,0
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 3b96ec0a88..90d17122b6 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -92,7 +92,9 @@ static slang_asm_info AsmInfo[] = {
    { "float_divide", IR_DIV, 1, 2 },
    { "float_power", IR_POW, 1, 2 },
    /* texture / sampler */
-   { "vec4_tex2d", IR_TEX, 1, 1 },
+   { "vec4_tex1d", IR_TEX, 1, 1 },
+   { "vec4_texb1d", IR_TEXB, 1, 3 },
+   { "vec4_tex2d", IR_TEX, 1, 2 },
    { "vec4_texb2d", IR_TEXB, 1, 3 },
    /* unary op */
    { "int_to_float", IR_I_TO_F, 1, 1 },
@@ -196,7 +198,7 @@ new_var(slang_assemble_ctx *A, slang_operation *oper,
    oper->var = v;
    n->Swizzle = swizzle;
    n->Var = v;
-   slang_resolve_storage(A->codegen/**NULL**/, n, A->program);
+   slang_resolve_storage(A->codegen, n, A->program);
    return n;
 }
 
@@ -801,10 +803,6 @@ _slang_gen_asm(slang_assemble_ctx *A, slang_operation *oper,
       free(n0);
    }
 
-   if (info->Opcode == IR_TEX || info->Opcode == IR_TEXB) {
-      n->TexTarget = TEXTURE_2D_INDEX;
-   }
-
    return n;
 }
 
@@ -1568,8 +1566,10 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
    slang_print_function(fun, 1);
 #endif
 
-   A->program->Parameters = _mesa_new_parameter_list();
-   A->program->Varying = _mesa_new_parameter_list();
+   /* should have been allocated earlier: */
+   assert(A->program->Parameters );
+   assert(A->program->Varying);
+
    A->codegen = _slang_new_codegen_context();
 
    /*printf("** Begin Simplify\n");*/
@@ -1608,3 +1608,79 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
 }
 
 
+static GLint
+sampler_to_texture_index(const slang_type_specifier_type type)
+{
+   switch (type) {
+   case slang_spec_sampler1D:
+      return TEXTURE_1D_INDEX;
+   case slang_spec_sampler2D:
+      return TEXTURE_2D_INDEX;
+   case slang_spec_sampler3D:
+      return TEXTURE_3D_INDEX;
+   case slang_spec_samplerCube:
+      return TEXTURE_CUBE_INDEX;
+   case slang_spec_sampler1DShadow:
+      return TEXTURE_1D_INDEX; /* XXX fix */
+   case slang_spec_sampler2DShadow:
+      return TEXTURE_2D_INDEX; /* XXX fix */
+   default:
+      return -1;
+   }
+}
+
+
+
+static GLint
+slang_alloc_sampler(struct gl_program *prog, const char *name)
+{
+   GLint i = _mesa_add_sampler(prog->Parameters, name);
+   return i;
+}
+
+
+/**
+ * Called by compiler when a global variable has been parsed/compiled.
+ * Here we examine the variable's type to determine what kind of register
+ * storage will be used.
+ *
+ * A uniform such as "gl_Position" will become the register specification
+ * (PROGRAM_OUTPUT, VERT_RESULT_HPOS).  Or, uniform "gl_FogFragCoord"
+ * will be (PROGRAM_INPUT, FRAG_ATTRIB_FOGC).
+ *
+ * Samplers are interesting.  For "uniform sampler2D tex;" we'll specify
+ * (PROGRAM_SAMPLER, index) where index is resolved at link-time to an
+ * actual texture unit (as specified by the user calling glUniform1i()).
+ */
+void
+_slang_codegen_global_variable(slang_variable *var, struct gl_program *prog)
+{
+   GLint texIndex;
+   slang_ir_storage *store = NULL;
+
+   texIndex = sampler_to_texture_index(var->type.specifier.type);
+
+   if (texIndex != -1) {
+      /* Texture sampler:
+       * store->File = PROGRAM_SAMPLER
+       * store->Index = sampler uniform location
+       * store->Size = texture type index (1D, 2D, 3D, cube, etc)
+       */
+      GLint samplerUniform = slang_alloc_sampler(prog, (char *) var->a_name);
+      store = _slang_new_ir_storage(PROGRAM_SAMPLER, samplerUniform, texIndex);
+      printf("SAMPLER ");
+   }
+   else if (var->type.qualifier == slang_qual_uniform) {
+      printf("UNIFORM ");
+   }
+
+   printf("CODEGEN VAR %s\n", (char*) var->a_name);
+
+   assert(!var->aux);
+#if 1
+   var->aux = store;
+#endif
+   /**
+      XXX allocate variable storage (aux), at least the register file.
+    */
+}
diff --git a/src/mesa/shader/slang/slang_codegen.h b/src/mesa/shader/slang/slang_codegen.h
index 042737b2b5..ef2ccd4ebf 100644
--- a/src/mesa/shader/slang/slang_codegen.h
+++ b/src/mesa/shader/slang/slang_codegen.h
@@ -35,5 +35,8 @@
 extern struct slang_ir_node_ *
 _slang_codegen_function(slang_assemble_ctx *A , struct slang_function_ *fun);
 
+extern void
+_slang_codegen_global_variable(slang_variable *var, struct gl_program *prog);
+
 
 #endif /* SLANG_CODEGEN_H */
diff --git a/src/mesa/shader/slang/slang_compile.c b/src/mesa/shader/slang/slang_compile.c
index da77de709c..711849d72f 100644
--- a/src/mesa/shader/slang/slang_compile.c
+++ b/src/mesa/shader/slang/slang_compile.c
@@ -803,25 +803,7 @@ parse_child_operation(slang_parse_ctx * C, slang_output_ctx * O,
    slang_operation *ch;
 
    /* grow child array */
-#if 000
-   oper->children = (slang_operation *)
-      slang_alloc_realloc(oper->children,
-                          oper->num_children * sizeof(slang_operation),
-                          (oper->num_children + 1) * sizeof(slang_operation));
-   if (oper->children == NULL) {
-      slang_info_log_memory(C->L);
-      return 0;
-   }
-
-   ch = &oper->children[oper->num_children];
-   if (!slang_operation_construct(ch)) {
-      slang_info_log_memory(C->L);
-      return 0;
-   }
-   oper->num_children++;
-#else
    ch = slang_operation_grow(&oper->num_children, &oper->children);
-#endif
    if (statement)
       return parse_statement(C, O, ch);
    return parse_expression(C, O, ch);
@@ -860,44 +842,6 @@ parse_statement(slang_parse_ctx * C, slang_output_ctx * O,
       /* local variable declaration, individual declarators are stored as
        * children identifiers
        */
-#if 000
-      oper->type = slang_oper_variable_decl;
-      {
-         const unsigned int first_var = O->vars->num_variables;
-
-         /* parse the declaration, note that there can be zero or more
-          * than one declarators
-          */
-         if (!parse_declaration(C, O))
-            return 0;
-         if (first_var < O->vars->num_variables) {
-            const unsigned int num_vars = O->vars->num_variables - first_var;
-            unsigned int i;
-
-            oper->children = (slang_operation *)
-               slang_alloc_malloc(num_vars * sizeof(slang_operation));
-            if (oper->children == NULL) {
-               slang_info_log_memory(C->L);
-               return 0;
-            }
-            for (oper->num_children = 0; oper->num_children < num_vars;
-                 oper->num_children++) {
-               if (!slang_operation_construct
-                   (&oper->children[oper->num_children])) {
-                  slang_info_log_memory(C->L);
-                  return 0;
-               }
-            }
-            for (i = first_var; i < O->vars->num_variables; i++) {
-               slang_operation *o = &oper->children[i - first_var];
-               o->type = slang_oper_identifier;
-               o->locals->outer_scope = O->vars;
-               o->a_id = O->vars->variables[i].a_name;
-            }
-         }
-      }
-#else
-
       oper->type = slang_oper_block_no_new_scope;
       {
          const unsigned int first_var = O->vars->num_variables;
@@ -925,9 +869,6 @@ parse_statement(slang_parse_ctx * C, slang_output_ctx * O,
             }
          }
       }
-
-
-#endif
       break;
    case OP_ASM:
       /* the __asm statement, parse the mnemonic and all its arguments
@@ -1776,6 +1717,11 @@ parse_init_declarator(slang_parse_ctx * C, slang_output_ctx * O,
       return 0;
    }
 
+#if 1
+   if (C->global_scope && O->program)
+      _slang_codegen_global_variable(var, O->program);
+#endif
+
    /* allocate global address space for a variable with a known size */
    if (C->global_scope
        && !(var->type.specifier.type == slang_spec_array
@@ -2309,6 +2255,9 @@ _slang_compile(GLcontext *ctx, struct gl_shader *shader)
          = (struct gl_program **) malloc(sizeof(struct gl_program*));
       shader->Programs[0] = _mesa_new_program(ctx, progTarget, 1);
       shader->NumPrograms = 1;
+
+      shader->Programs[0]->Parameters = _mesa_new_parameter_list();
+      shader->Programs[0]->Varying = _mesa_new_parameter_list();
    }
 
    slang_info_log_construct(&info_log);
diff --git a/src/mesa/shader/slang/slang_emit.c b/src/mesa/shader/slang/slang_emit.c
index a3d970694f..3f1f1373c6 100644
--- a/src/mesa/shader/slang/slang_emit.c
+++ b/src/mesa/shader/slang/slang_emit.c
@@ -184,6 +184,7 @@ storage_string(const slang_ir_storage *st)
       "UNIFORM",
       "WRITE_ONLY",
       "ADDRESS",
+      "SAMPLER",
       "UNDEFINED"
    };
    static char s[100];
@@ -194,10 +195,8 @@ storage_string(const slang_ir_storage *st)
       sprintf(s, "%s[%d..%d]", files[st->File], st->Index,
               st->Index + st->Size - 1);
 #endif
-   if (st->File == 1000)
-      sprintf(s, "sampler");
-   else
-      sprintf(s, "%s[%d]", files[st->File], st->Index);
+   assert(st->File < sizeof(files) / sizeof(files[0]));
+   sprintf(s, "%s[%d]", files[st->File], st->Index);
    return s;
 }
 
@@ -680,10 +679,12 @@ slang_resolve_storage(slang_gen_context *gc, slang_ir_node *n,
       assert(n->Var);
       if (is_sampler_type(&n->Var->type)) {
          /* i.e. "uniform sampler2D tex;" */
-#define PROGRAM_SAMPLER 1000
          n->Store->File = PROGRAM_SAMPLER;
          n->Store->Size = 1; /* never used */
          n->Store->Index = alloc_sampler(gc);
+         n->Store->Index = slang_alloc_uniform(prog, (char *) n->Var->a_name, 1);
+         printf("********** Alloc sampler uniform %d\n", n->Store->Index);
+         abort(); /* this is a locally-declared sampler */
       }
       else if (n->Store->Index < 0) { /* XXX assert this? */
          assert(gc);
@@ -701,12 +702,18 @@ slang_resolve_storage(slang_gen_context *gc, slang_ir_node *n,
       return;
    }
 
+   /*
+   assert(!is_sampler_type(&n->Var->type));
+   */
+
    if (n->Opcode == IR_VAR && n->Store->File == PROGRAM_UNDEFINED) {
       /* try to determine the storage for this variable */
       GLint i;
 
       assert(n->Var);
 
+      /*if (is_sampler(*/
+
       if (n->Store->Size < 0) {
          /* determine var/storage size now */
          n->Store->Size = sizeof_type(&n->Var->type);
@@ -766,14 +773,7 @@ slang_resolve_storage(slang_gen_context *gc, slang_ir_node *n,
       else if (n->Var->type.qualifier == slang_qual_varying) {
          i = slang_alloc_varying(prog, (char *) n->Var->a_name);
          if (i >= 0) {
-#ifdef OLD_LINK
-            if (prog->Target == GL_VERTEX_PROGRAM_ARB)
-               n->Store->File = PROGRAM_OUTPUT;
-            else
-               n->Store->File = PROGRAM_INPUT;
-#else
             n->Store->File = PROGRAM_VARYING;
-#endif
             n->Store->Index = i;
             return;
          }
@@ -1023,14 +1023,24 @@ emit_tex(slang_gen_context *gc, slang_ir_node *n, struct gl_program *prog)
       inst = new_instruction(prog, OPCODE_TXB);
    }
 
+   if (!n->Store)
+      slang_alloc_temp_storage(gc, n, 4);
+
    storage_to_dst_reg(&inst->DstReg, n->Store, n->Writemask);
 
-   storage_to_src_reg(&inst->SrcReg[0], n->Children[0]->Store,
-                      n->Children[0]->Swizzle);
+   /* Child[1] is the coord */
+   storage_to_src_reg(&inst->SrcReg[0], n->Children[1]->Store,
+                      n->Children[1]->Swizzle);
 
-   inst->TexSrcTarget = n->TexTarget;
-   inst->TexSrcUnit = 0;  /* XXX temp */
+   /* Child[0] is the sampler (a uniform which'll indicate the texture unit) */
+   assert(n->Children[0]->Store);
+   assert(n->Children[0]->Store->Size >= TEXTURE_1D_INDEX);
 
+   inst->Sampler = n->Children[0]->Store->Index; /* i.e. uniform's index */
+   inst->TexSrcTarget = n->Children[0]->Store->Size;
+   inst->TexSrcUnit = 27; /* Dummy value; the TexSrcUnit will be computed at
+                           * link time, using the sampler uniform's value.
+                           */
    return inst;
 }
 
diff --git a/src/mesa/shader/slang/slang_ir.h b/src/mesa/shader/slang/slang_ir.h
index b43ff1db61..0613121b98 100644
--- a/src/mesa/shader/slang/slang_ir.h
+++ b/src/mesa/shader/slang/slang_ir.h
@@ -112,7 +112,6 @@ typedef struct slang_ir_node_
    GLfloat Value[4];    /**< If Opcode == IR_FLOAT */
    slang_variable *Var;
    slang_ir_storage *Store;
-   GLuint TexTarget;   /**< If Opcode == IR_TEX or IR_TEXB */
 } slang_ir_node;
 
 
diff --git a/src/mesa/shader/slang/slang_link.h b/src/mesa/shader/slang/slang_link.h
index f56d717873..2fc5525000 100644
--- a/src/mesa/shader/slang/slang_link.h
+++ b/src/mesa/shader/slang/slang_link.h
@@ -353,6 +353,11 @@ extern void
 _slang_link2(GLcontext *ctx, GLhandleARB h,
              struct gl_shader_program *shProg);
 
+extern void
+_slang_resolve_samplers(struct gl_shader_program *shProg,
+                        struct gl_program *prog);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/mesa/shader/slang/slang_link2.c b/src/mesa/shader/slang/slang_link2.c
index 33813fecc4..8b59d7f76a 100644
--- a/src/mesa/shader/slang/slang_link2.c
+++ b/src/mesa/shader/slang/slang_link2.c
@@ -138,6 +138,7 @@ is_uniform(enum register_file file)
            file == PROGRAM_STATE_VAR ||
            file == PROGRAM_NAMED_PARAM ||
            file == PROGRAM_CONSTANT ||
+           file == PROGRAM_SAMPLER ||
            file == PROGRAM_UNIFORM);
 }
 
@@ -148,7 +149,8 @@ link_uniform_vars(struct gl_shader_program *shProg, struct gl_program *prog)
    GLuint *map, i;
 
 #if 0
-      _mesa_print_parameter_list(prog->Parameters);
+   printf("================ pre link uniforms ===============\n");
+   _mesa_print_parameter_list(shProg->Uniforms);
 #endif
 
    map = (GLuint *) malloc(prog->Parameters->NumParameters * sizeof(GLuint));
@@ -201,6 +203,9 @@ link_uniform_vars(struct gl_shader_program *shProg, struct gl_program *prog)
          case PROGRAM_UNIFORM:
             j = _mesa_add_uniform(shProg->Uniforms, p->Name, p->Size);
             break;
+         case PROGRAM_SAMPLER:
+            j = _mesa_add_sampler(shProg->Uniforms, p->Name);
+            break;
          default:
             abort();
          }
@@ -219,6 +224,11 @@ link_uniform_vars(struct gl_shader_program *shProg, struct gl_program *prog)
    }
 
 #if 0
+   printf("================ post link uniforms ===============\n");
+   _mesa_print_parameter_list(shProg->Uniforms);
+#endif
+
+#if 0
    {
       GLuint i;
       for (i = 0; i < prog->Parameters->NumParameters; i++) {
@@ -244,7 +254,14 @@ link_uniform_vars(struct gl_shader_program *shProg, struct gl_program *prog)
             inst->SrcReg[j].Index = map[ inst->SrcReg[j].Index ];
          }
       }
-      /* XXX update program OutputsWritten, InputsRead */
+
+      if (inst->Opcode == OPCODE_TEX ||
+          inst->Opcode == OPCODE_TXB ||
+          inst->Opcode == OPCODE_TXB) {
+         printf("====== remap sampler from %d to %d\n",
+                inst->Sampler, map[ inst->Sampler ]);
+         inst->Sampler = map[ inst->Sampler ];
+      }
    }
 
    free(map);
@@ -257,7 +274,7 @@ link_uniform_vars(struct gl_shader_program *shProg, struct gl_program *prog)
  * XXX Temporary
  */
 static void
-slang_resolve_branches(struct gl_program *prog)
+_slang_resolve_branches(struct gl_program *prog)
 {
    struct target {
       const char *Name;
@@ -294,21 +311,46 @@ slang_resolve_branches(struct gl_program *prog)
 
 
 /**
+ * Scan program for texture instructions, lookup sampler/uniform's value
+ * to determine which texture unit to use.
+ * Also, update the program's TexturesUsed[] array.
+ */
+void
+_slang_resolve_samplers(struct gl_shader_program *shProg,
+                        struct gl_program *prog)
+{
+   GLuint i;
+
+   for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++)
+      prog->TexturesUsed[i] = 0;
+
+   for (i = 0; i < prog->NumInstructions; i++) {
+      struct prog_instruction *inst = prog->Instructions + i;
+      if (inst->Opcode == OPCODE_TEX ||
+          inst->Opcode == OPCODE_TXB ||
+          inst->Opcode == OPCODE_TXB) {
+         GLint sampleUnit = (GLint) shProg->Uniforms->ParameterValues[inst->Sampler][0];
+         assert(sampleUnit < MAX_TEXTURE_IMAGE_UNITS);
+         inst->TexSrcUnit = sampleUnit;
+
+         prog->TexturesUsed[inst->TexSrcUnit] |= (1 << inst->TexSrcTarget);
+      }
+   }
+}
+
+
+/**
  * Scan program instructions to update the program's InputsRead and
  * OutputsWritten fields.
- * Also, update the program's TexturesUsed[] array.
  */
 static void
-slang_update_inputs_outputs(struct gl_program *prog)
+_slang_update_inputs_outputs(struct gl_program *prog)
 {
    GLuint i, j;
 
    prog->InputsRead = 0x0;
    prog->OutputsWritten = 0x0;
 
-   for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++)
-      prog->TexturesUsed[i] = 0;
-
    for (i = 0; i < prog->NumInstructions; i++) {
       const struct prog_instruction *inst = prog->Instructions + i;
       const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
@@ -320,12 +362,6 @@ slang_update_inputs_outputs(struct gl_program *prog)
       if (inst->DstReg.File == PROGRAM_OUTPUT) {
          prog->OutputsWritten |= 1 << inst->DstReg.Index;
       }
-
-      if (inst->Opcode == OPCODE_TEX ||
-          inst->Opcode == OPCODE_TXB ||
-          inst->Opcode == OPCODE_TXP) {
-         prog->TexturesUsed[inst->TexSrcUnit] |= (1 << inst->TexSrcTarget);
-      }
    }
 }
 
@@ -425,11 +461,14 @@ _slang_link2(GLcontext *ctx,
    shProg->VertexProgram->Base.Parameters = shProg->Uniforms;
    shProg->FragmentProgram->Base.Parameters = shProg->Uniforms;
 
-   slang_resolve_branches(&shProg->VertexProgram->Base);
-   slang_resolve_branches(&shProg->FragmentProgram->Base);
-
-   slang_update_inputs_outputs(&shProg->VertexProgram->Base);
-   slang_update_inputs_outputs(&shProg->FragmentProgram->Base);
+   _slang_resolve_branches(&shProg->VertexProgram->Base);
+   _slang_resolve_branches(&shProg->FragmentProgram->Base);
+#if 1
+   _slang_resolve_samplers(shProg, &shProg->VertexProgram->Base);
+   _slang_resolve_samplers(shProg, &shProg->FragmentProgram->Base);
+#endif
+   _slang_update_inputs_outputs(&shProg->VertexProgram->Base);
+   _slang_update_inputs_outputs(&shProg->FragmentProgram->Base);
 
 #if 1
    printf("************** original fragment program\n");