Implement GL_ARB_texture_rectangle support

This includes the sampler2DRect and sampler2DRectShadow types and
the texture2DRect(), texture2DRectProj(), etc. built-in functions.

11 files changed, 141 insertions, 44 deletions

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 0bf1371c0b..417f1fce86 100644
--- a/src/mesa/shader/slang/library/slang_common_builtin_gc.h
+++ b/src/mesa/shader/slang/library/slang_common_builtin_gc.h
@@ -41,25 +41,25 @@
 73,110,118,101,114,115,101,84,114,97,110,115,112,111,115,101,0,0,0,2,2,4,15,1,103,108,95,84,101,
 120,116,117,114,101,77,97,116,114,105,120,73,110,118,101,114,115,101,84,114,97,110,115,112,111,115,
 101,0,3,18,103,108,95,77,97,120,84,101,120,116,117,114,101,67,111,111,114,100,115,0,0,0,2,2,4,9,1,
-103,108,95,78,111,114,109,97,108,83,99,97,108,101,0,0,0,2,2,0,22,103,108,95,68,101,112,116,104,82,
+103,108,95,78,111,114,109,97,108,83,99,97,108,101,0,0,0,2,2,0,24,103,108,95,68,101,112,116,104,82,
 97,110,103,101,80,97,114,97,109,101,116,101,114,115,0,9,110,101,97,114,0,0,0,1,9,102,97,114,0,0,0,
-1,9,100,105,102,102,0,0,0,0,0,0,2,2,4,23,103,108,95,68,101,112,116,104,82,97,110,103,101,80,97,114,
+1,9,100,105,102,102,0,0,0,0,0,0,2,2,4,25,103,108,95,68,101,112,116,104,82,97,110,103,101,80,97,114,
 97,109,101,116,101,114,115,0,1,103,108,95,68,101,112,116,104,82,97,110,103,101,0,0,0,2,2,4,12,1,
 103,108,95,67,108,105,112,80,108,97,110,101,0,3,18,103,108,95,77,97,120,67,108,105,112,80,108,97,
-110,101,115,0,0,0,2,2,0,22,103,108,95,80,111,105,110,116,80,97,114,97,109,101,116,101,114,115,0,9,
+110,101,115,0,0,0,2,2,0,24,103,108,95,80,111,105,110,116,80,97,114,97,109,101,116,101,114,115,0,9,
 115,105,122,101,0,0,0,1,9,115,105,122,101,77,105,110,0,0,0,1,9,115,105,122,101,77,97,120,0,0,0,1,9,
 102,97,100,101,84,104,114,101,115,104,111,108,100,83,105,122,101,0,0,0,1,9,100,105,115,116,97,110,
 99,101,67,111,110,115,116,97,110,116,65,116,116,101,110,117,97,116,105,111,110,0,0,0,1,9,100,105,
 115,116,97,110,99,101,76,105,110,101,97,114,65,116,116,101,110,117,97,116,105,111,110,0,0,0,1,9,
 100,105,115,116,97,110,99,101,81,117,97,100,114,97,116,105,99,65,116,116,101,110,117,97,116,105,
-111,110,0,0,0,0,0,0,2,2,4,23,103,108,95,80,111,105,110,116,80,97,114,97,109,101,116,101,114,115,0,
-1,103,108,95,80,111,105,110,116,0,0,0,2,2,0,22,103,108,95,77,97,116,101,114,105,97,108,80,97,114,
+111,110,0,0,0,0,0,0,2,2,4,25,103,108,95,80,111,105,110,116,80,97,114,97,109,101,116,101,114,115,0,
+1,103,108,95,80,111,105,110,116,0,0,0,2,2,0,24,103,108,95,77,97,116,101,114,105,97,108,80,97,114,
 97,109,101,116,101,114,115,0,12,101,109,105,115,115,105,111,110,0,0,0,1,12,97,109,98,105,101,110,
 116,0,0,0,1,12,100,105,102,102,117,115,101,0,0,0,1,12,115,112,101,99,117,108,97,114,0,0,0,1,9,115,
-104,105,110,105,110,101,115,115,0,0,0,0,0,0,2,2,4,23,103,108,95,77,97,116,101,114,105,97,108,80,97,
+104,105,110,105,110,101,115,115,0,0,0,0,0,0,2,2,4,25,103,108,95,77,97,116,101,114,105,97,108,80,97,
 114,97,109,101,116,101,114,115,0,1,103,108,95,70,114,111,110,116,77,97,116,101,114,105,97,108,0,0,
-0,2,2,4,23,103,108,95,77,97,116,101,114,105,97,108,80,97,114,97,109,101,116,101,114,115,0,1,103,
-108,95,66,97,99,107,77,97,116,101,114,105,97,108,0,0,0,2,2,0,22,103,108,95,76,105,103,104,116,83,
+0,2,2,4,25,103,108,95,77,97,116,101,114,105,97,108,80,97,114,97,109,101,116,101,114,115,0,1,103,
+108,95,66,97,99,107,77,97,116,101,114,105,97,108,0,0,0,2,2,0,24,103,108,95,76,105,103,104,116,83,
 111,117,114,99,101,80,97,114,97,109,101,116,101,114,115,0,12,97,109,98,105,101,110,116,0,0,0,1,12,
 100,105,102,102,117,115,101,0,0,0,1,12,115,112,101,99,117,108,97,114,0,0,0,1,12,112,111,115,105,
 116,105,111,110,0,0,0,1,12,104,97,108,102,86,101,99,116,111,114,0,0,0,1,11,115,112,111,116,68,105,
@@ -67,22 +67,22 @@
 112,111,116,67,117,116,111,102,102,0,0,0,1,9,115,112,111,116,67,111,115,67,117,116,111,102,102,0,0,
 0,1,9,99,111,110,115,116,97,110,116,65,116,116,101,110,117,97,116,105,111,110,0,0,0,1,9,108,105,
 110,101,97,114,65,116,116,101,110,117,97,116,105,111,110,0,0,0,1,9,113,117,97,100,114,97,116,105,
-99,65,116,116,101,110,117,97,116,105,111,110,0,0,0,0,0,0,2,2,4,23,103,108,95,76,105,103,104,116,83,
+99,65,116,116,101,110,117,97,116,105,111,110,0,0,0,0,0,0,2,2,4,25,103,108,95,76,105,103,104,116,83,
 111,117,114,99,101,80,97,114,97,109,101,116,101,114,115,0,1,103,108,95,76,105,103,104,116,83,111,
-117,114,99,101,0,3,18,103,108,95,77,97,120,76,105,103,104,116,115,0,0,0,2,2,0,22,103,108,95,76,105,
+117,114,99,101,0,3,18,103,108,95,77,97,120,76,105,103,104,116,115,0,0,0,2,2,0,24,103,108,95,76,105,
 103,104,116,77,111,100,101,108,80,97,114,97,109,101,116,101,114,115,0,12,97,109,98,105,101,110,116,
-0,0,0,0,0,0,2,2,4,23,103,108,95,76,105,103,104,116,77,111,100,101,108,80,97,114,97,109,101,116,101,
-114,115,0,1,103,108,95,76,105,103,104,116,77,111,100,101,108,0,0,0,2,2,0,22,103,108,95,76,105,103,
+0,0,0,0,0,0,2,2,4,25,103,108,95,76,105,103,104,116,77,111,100,101,108,80,97,114,97,109,101,116,101,
+114,115,0,1,103,108,95,76,105,103,104,116,77,111,100,101,108,0,0,0,2,2,0,24,103,108,95,76,105,103,
 104,116,77,111,100,101,108,80,114,111,100,117,99,116,115,0,12,115,99,101,110,101,67,111,108,111,
-114,0,0,0,0,0,0,2,2,4,23,103,108,95,76,105,103,104,116,77,111,100,101,108,80,114,111,100,117,99,
+114,0,0,0,0,0,0,2,2,4,25,103,108,95,76,105,103,104,116,77,111,100,101,108,80,114,111,100,117,99,
 116,115,0,1,103,108,95,70,114,111,110,116,76,105,103,104,116,77,111,100,101,108,80,114,111,100,117,
-99,116,0,0,0,2,2,4,23,103,108,95,76,105,103,104,116,77,111,100,101,108,80,114,111,100,117,99,116,
+99,116,0,0,0,2,2,4,25,103,108,95,76,105,103,104,116,77,111,100,101,108,80,114,111,100,117,99,116,
 115,0,1,103,108,95,66,97,99,107,76,105,103,104,116,77,111,100,101,108,80,114,111,100,117,99,116,0,
-0,0,2,2,0,22,103,108,95,76,105,103,104,116,80,114,111,100,117,99,116,115,0,12,97,109,98,105,101,
+0,0,2,2,0,24,103,108,95,76,105,103,104,116,80,114,111,100,117,99,116,115,0,12,97,109,98,105,101,
 110,116,0,0,0,1,12,100,105,102,102,117,115,101,0,0,0,1,12,115,112,101,99,117,108,97,114,0,0,0,0,0,
-0,2,2,4,23,103,108,95,76,105,103,104,116,80,114,111,100,117,99,116,115,0,1,103,108,95,70,114,111,
+0,2,2,4,25,103,108,95,76,105,103,104,116,80,114,111,100,117,99,116,115,0,1,103,108,95,70,114,111,
 110,116,76,105,103,104,116,80,114,111,100,117,99,116,0,3,18,103,108,95,77,97,120,76,105,103,104,
-116,115,0,0,0,2,2,4,23,103,108,95,76,105,103,104,116,80,114,111,100,117,99,116,115,0,1,103,108,95,
+116,115,0,0,0,2,2,4,25,103,108,95,76,105,103,104,116,80,114,111,100,117,99,116,115,0,1,103,108,95,
 66,97,99,107,76,105,103,104,116,80,114,111,100,117,99,116,0,3,18,103,108,95,77,97,120,76,105,103,
 104,116,115,0,0,0,2,2,4,12,1,103,108,95,84,101,120,116,117,114,101,69,110,118,67,111,108,111,114,0,
 3,18,103,108,95,77,97,120,84,101,120,116,117,114,101,73,109,97,103,101,85,110,105,116,115,0,0,0,2,
@@ -97,9 +97,9 @@
 120,84,101,120,116,117,114,101,67,111,111,114,100,115,0,0,0,2,2,4,12,1,103,108,95,79,98,106,101,99,
 116,80,108,97,110,101,82,0,3,18,103,108,95,77,97,120,84,101,120,116,117,114,101,67,111,111,114,100,
 115,0,0,0,2,2,4,12,1,103,108,95,79,98,106,101,99,116,80,108,97,110,101,81,0,3,18,103,108,95,77,97,
-120,84,101,120,116,117,114,101,67,111,111,114,100,115,0,0,0,2,2,0,22,103,108,95,70,111,103,80,97,
+120,84,101,120,116,117,114,101,67,111,111,114,100,115,0,0,0,2,2,0,24,103,108,95,70,111,103,80,97,
 114,97,109,101,116,101,114,115,0,12,99,111,108,111,114,0,0,0,1,9,100,101,110,115,105,116,121,0,0,0,
-1,9,115,116,97,114,116,0,0,0,1,9,101,110,100,0,0,0,1,9,115,99,97,108,101,0,0,0,0,0,0,2,2,4,23,103,
+1,9,115,116,97,114,116,0,0,0,1,9,101,110,100,0,0,0,1,9,115,99,97,108,101,0,0,0,0,0,0,2,2,4,25,103,
 108,95,70,111,103,80,97,114,97,109,101,116,101,114,115,0,1,103,108,95,70,111,103,0,0,0,1,0,9,0,114,
 97,100,105,97,110,115,0,1,1,0,9,100,101,103,0,0,0,1,3,2,1,9,1,99,0,2,17,51,0,49,52,49,53,57,50,54,
 0,0,17,49,56,48,0,48,0,0,49,0,0,4,118,101,99,52,95,109,117,108,116,105,112,108,121,0,18,95,95,114,
diff --git a/src/mesa/shader/slang/library/slang_fragment_builtin.gc b/src/mesa/shader/slang/library/slang_fragment_builtin.gc
index 40b1207ca8..9a7e17bdaf 100644
--- a/src/mesa/shader/slang/library/slang_fragment_builtin.gc
+++ b/src/mesa/shader/slang/library/slang_fragment_builtin.gc
@@ -68,6 +68,8 @@ vec4 texture1DProj(const sampler1D sampler, const vec4 coord, const float bias)
 }
 
 
+
+
 vec4 texture2D(const sampler2D sampler, const vec2 coord, const float bias)
 {
    vec4 coord4;
@@ -95,6 +97,8 @@ vec4 texture2DProj(const sampler2D sampler, const vec4 coord, const float bias)
 }
 
 
+
+
 vec4 texture3D(const sampler3D sampler, const vec3 coord, const float bias)
 {
    vec4 coord4;
@@ -113,6 +117,8 @@ vec4 texture3DProj(const sampler3D sampler, const vec4 coord, const float bias)
 }
 
 
+
+
 vec4 textureCube(const samplerCube sampler, const vec3 coord, const float bias)
 {
    vec4 coord4;
@@ -122,6 +128,8 @@ vec4 textureCube(const samplerCube sampler, const vec3 coord, const float bias)
 }
 
 
+
+
 // For shadow textures, we use the regular tex instructions since they should
 // do the depth comparison step.
 
@@ -142,6 +150,9 @@ vec4 shadow1DProj(const sampler1DShadow sampler, const vec4 coord, const float b
    __asm vec4_texb1d __retVal, sampler, pcoord;
 }
 
+
+
+
 vec4 shadow2D(const sampler2DShadow sampler, const vec3 coord, const float bias)
 {
    vec4 coord4;
@@ -161,6 +172,38 @@ vec4 shadow2DProj(const sampler2DShadow sampler, const vec4 coord, const float b
 
 
 
+//// GL_ARB_texture_rectangle:
+vec4 texture2DRect(const sampler2DRect sampler, const vec2 coord)
+{
+   __asm vec4_tex_rect __retVal, sampler, coord;
+}
+
+vec4 texture2DRectProj(const sampler2DRect sampler, const vec3 coord)
+{
+   // do projection here
+   vec4 pcoord;
+   pcoord.xy = coord.xy / coord.z;
+   __asm vec4_texp_rect __retVal, sampler, pcoord;
+}
+
+vec4 texture2DRectProj(const sampler2DRect sampler, const vec4 coord)
+{
+   // do projection here
+   vec4 pcoord;
+   pcoord.xy = coord.xy / coord.w;
+   __asm vec4_texp_rect __retVal, sampler, pcoord;
+}
+
+vec4 shadow2DRect(const sampler2DRectShadow sampler, const vec3 coord)
+{
+// XXX to do
+}
+
+vec4 shadow2DRectProj(const sampler2DRectShadow sampler, const vec4 coord)
+{
+// XXX to do
+}
+
 
 
 //
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 8b8202ea2f..88317107b2 100644
--- a/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h
+++ b/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h
@@ -77,23 +77,39 @@
 121,0,18,99,111,111,114,100,0,59,119,0,49,20,0,9,18,112,99,111,111,114,100,0,59,122,0,18,99,111,
 111,114,100,0,59,122,0,20,0,9,18,112,99,111,111,114,100,0,59,119,0,18,98,105,97,115,0,20,0,4,118,
 101,99,52,95,116,101,120,98,50,100,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,
-114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,0,9,0,100,70,100,120,0,1,1,0,9,112,0,0,0,1,4,118,101,
-99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,59,120,0,0,18,112,0,59,120,120,120,120,0,0,
-0,0,1,0,10,0,100,70,100,120,0,1,1,0,10,112,0,0,0,1,4,118,101,99,52,95,100,100,120,0,18,95,95,114,
-101,116,86,97,108,0,59,120,121,0,0,18,112,0,59,120,121,121,121,0,0,0,0,1,0,11,0,100,70,100,120,0,1,
-1,0,11,112,0,0,0,1,4,118,101,99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,59,120,121,
-122,0,0,18,112,0,59,120,121,122,122,0,0,0,0,1,0,12,0,100,70,100,120,0,1,1,0,12,112,0,0,0,1,4,118,
-101,99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,0,18,112,0,0,0,0,1,0,9,0,100,70,100,
-121,0,1,1,0,9,112,0,0,0,1,4,118,101,99,52,95,100,100,121,0,18,95,95,114,101,116,86,97,108,0,59,120,
-0,0,18,112,0,59,120,120,120,120,0,0,0,0,1,0,10,0,100,70,100,121,0,1,1,0,10,112,0,0,0,1,4,118,101,
-99,52,95,100,100,121,0,18,95,95,114,101,116,86,97,108,0,59,120,121,0,0,18,112,0,59,120,121,121,121,
-0,0,0,0,1,0,11,0,100,70,100,121,0,1,1,0,11,112,0,0,0,1,4,118,101,99,52,95,100,100,121,0,18,95,95,
+114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,50,68,82,101,99,116,
+0,1,1,0,22,115,97,109,112,108,101,114,0,0,1,1,0,10,99,111,111,114,100,0,0,0,1,4,118,101,99,52,95,
+116,101,120,95,114,101,99,116,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,
+0,18,99,111,111,114,100,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,50,68,82,101,99,116,80,114,
+111,106,0,1,1,0,22,115,97,109,112,108,101,114,0,0,1,1,0,11,99,111,111,114,100,0,0,0,1,3,2,0,12,1,
+112,99,111,111,114,100,0,0,0,9,18,112,99,111,111,114,100,0,59,120,121,0,18,99,111,111,114,100,0,59,
+120,121,0,18,99,111,111,114,100,0,59,122,0,49,20,0,4,118,101,99,52,95,116,101,120,112,95,114,101,
+99,116,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,112,99,111,111,
+114,100,0,0,0,0,1,0,12,0,116,101,120,116,117,114,101,50,68,82,101,99,116,80,114,111,106,0,1,1,0,22,
+115,97,109,112,108,101,114,0,0,1,1,0,12,99,111,111,114,100,0,0,0,1,3,2,0,12,1,112,99,111,111,114,
+100,0,0,0,9,18,112,99,111,111,114,100,0,59,120,121,0,18,99,111,111,114,100,0,59,120,121,0,18,99,
+111,111,114,100,0,59,119,0,49,20,0,4,118,101,99,52,95,116,101,120,112,95,114,101,99,116,0,18,95,95,
+114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,0,
+12,0,115,104,97,100,111,119,50,68,82,101,99,116,0,1,1,0,23,115,97,109,112,108,101,114,0,0,1,1,0,11,
+99,111,111,114,100,0,0,0,1,0,1,0,12,0,115,104,97,100,111,119,50,68,82,101,99,116,80,114,111,106,0,
+1,1,0,23,115,97,109,112,108,101,114,0,0,1,1,0,12,99,111,111,114,100,0,0,0,1,0,1,0,9,0,100,70,100,
+120,0,1,1,0,9,112,0,0,0,1,4,118,101,99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,59,120,
+0,0,18,112,0,59,120,120,120,120,0,0,0,0,1,0,10,0,100,70,100,120,0,1,1,0,10,112,0,0,0,1,4,118,101,
+99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,59,120,121,0,0,18,112,0,59,120,121,121,121,
+0,0,0,0,1,0,11,0,100,70,100,120,0,1,1,0,11,112,0,0,0,1,4,118,101,99,52,95,100,100,120,0,18,95,95,
 114,101,116,86,97,108,0,59,120,121,122,0,0,18,112,0,59,120,121,122,122,0,0,0,0,1,0,12,0,100,70,100,
-121,0,1,1,0,12,112,0,0,0,1,4,118,101,99,52,95,100,100,121,0,18,95,95,114,101,116,86,97,108,0,0,18,
-112,0,0,0,0,1,0,9,0,102,119,105,100,116,104,0,1,1,0,9,112,0,0,0,1,8,58,97,98,115,0,58,100,70,100,
-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,
-105,100,116,104,0,1,1,0,10,112,0,0,0,1,8,58,97,98,115,0,58,100,70,100,120,0,18,112,0,0,0,0,0,58,97,
-98,115,0,58,100,70,100,121,0,18,112,0,0,0,0,0,46,0,0,1,0,11,0,102,119,105,100,116,104,0,1,1,0,11,
-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,
-0,18,112,0,0,0,0,0,46,0,0,1,0,12,0,102,119,105,100,116,104,0,1,1,0,12,112,0,0,0,1,8,58,97,98,115,0,
-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
+120,0,1,1,0,12,112,0,0,0,1,4,118,101,99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,0,18,
+112,0,0,0,0,1,0,9,0,100,70,100,121,0,1,1,0,9,112,0,0,0,1,4,118,101,99,52,95,100,100,121,0,18,95,95,
+114,101,116,86,97,108,0,59,120,0,0,18,112,0,59,120,120,120,120,0,0,0,0,1,0,10,0,100,70,100,121,0,1,
+1,0,10,112,0,0,0,1,4,118,101,99,52,95,100,100,121,0,18,95,95,114,101,116,86,97,108,0,59,120,121,0,
+0,18,112,0,59,120,121,121,121,0,0,0,0,1,0,11,0,100,70,100,121,0,1,1,0,11,112,0,0,0,1,4,118,101,99,
+52,95,100,100,121,0,18,95,95,114,101,116,86,97,108,0,59,120,121,122,0,0,18,112,0,59,120,121,122,
+122,0,0,0,0,1,0,12,0,100,70,100,121,0,1,1,0,12,112,0,0,0,1,4,118,101,99,52,95,100,100,121,0,18,95,
+95,114,101,116,86,97,108,0,0,18,112,0,0,0,0,1,0,9,0,102,119,105,100,116,104,0,1,1,0,9,112,0,0,0,1,
+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,
+0,0,0,0,46,0,0,1,0,10,0,102,119,105,100,116,104,0,1,1,0,10,112,0,0,0,1,8,58,97,98,115,0,58,100,70,
+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,
+119,105,100,116,104,0,1,1,0,11,112,0,0,0,1,8,58,97,98,115,0,58,100,70,100,120,0,18,112,0,0,0,0,0,
+58,97,98,115,0,58,100,70,100,121,0,18,112,0,0,0,0,0,46,0,0,1,0,12,0,102,119,105,100,116,104,0,1,1,
+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/library/slang_shader.syn b/src/mesa/shader/slang/library/slang_shader.syn
index bfa6793f06..9389869da2 100644
--- a/src/mesa/shader/slang/library/slang_shader.syn
+++ b/src/mesa/shader/slang/library/slang_shader.syn
@@ -139,8 +139,10 @@
 .emtcode TYPE_SPECIFIER_SAMPLERCUBE                 19
 .emtcode TYPE_SPECIFIER_SAMPLER1DSHADOW             20
 .emtcode TYPE_SPECIFIER_SAMPLER2DSHADOW             21
-.emtcode TYPE_SPECIFIER_STRUCT                      22
-.emtcode TYPE_SPECIFIER_TYPENAME                    23
+.emtcode TYPE_SPECIFIER_SAMPLER2DRECT               22
+.emtcode TYPE_SPECIFIER_SAMPLER2DRECTSHADOW         23
+.emtcode TYPE_SPECIFIER_STRUCT                      24
+.emtcode TYPE_SPECIFIER_TYPENAME                    25
 
 /* structure field */
 .emtcode FIELD_NONE                                 0
@@ -884,6 +886,8 @@ type_qualifier
                                           | "samplerCube"
                                           | "sampler1DShadow"
                                           | "sampler2DShadow"
+					  | "sampler2DRect"
+					  | "sampler2DRectShadow"
                                           | <struct_specifier>
                                           | <type_name>
 */
@@ -910,6 +914,8 @@ type_specifier_space
     "samplerCube" .emit TYPE_SPECIFIER_SAMPLERCUBE .or
     "sampler1DShadow" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or
     "sampler2DShadow" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or
+    "sampler2DRect" .emit TYPE_SPECIFIER_SAMPLER2DRECT .or
+    "sampler2DRectShadow" .emit TYPE_SPECIFIER_SAMPLER2DRECTSHADOW .or
     type_name .emit TYPE_SPECIFIER_TYPENAME;
 type_specifier_nospace
     struct_specifier .emit TYPE_SPECIFIER_STRUCT;
diff --git a/src/mesa/shader/slang/library/slang_shader_syn.h b/src/mesa/shader/slang/library/slang_shader_syn.h
index 58cf1b1390..4863feda5b 100644
--- a/src/mesa/shader/slang/library/slang_shader_syn.h
+++ b/src/mesa/shader/slang/library/slang_shader_syn.h
@@ -63,8 +63,10 @@
 ".emtcode TYPE_SPECIFIER_SAMPLERCUBE 19\n"
 ".emtcode TYPE_SPECIFIER_SAMPLER1DSHADOW 20\n"
 ".emtcode TYPE_SPECIFIER_SAMPLER2DSHADOW 21\n"
-".emtcode TYPE_SPECIFIER_STRUCT 22\n"
-".emtcode TYPE_SPECIFIER_TYPENAME 23\n"
+".emtcode TYPE_SPECIFIER_SAMPLER2DRECT 22\n"
+".emtcode TYPE_SPECIFIER_SAMPLER2DRECTSHADOW 23\n"
+".emtcode TYPE_SPECIFIER_STRUCT 24\n"
+".emtcode TYPE_SPECIFIER_TYPENAME 25\n"
 ".emtcode FIELD_NONE 0\n"
 ".emtcode FIELD_NEXT 1\n"
 ".emtcode FIELD_ARRAY 2\n"
@@ -435,6 +437,8 @@
 " \"samplerCube\" .emit TYPE_SPECIFIER_SAMPLERCUBE .or\n"
 " \"sampler1DShadow\" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or\n"
 " \"sampler2DShadow\" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or\n"
+" \"sampler2DRect\" .emit TYPE_SPECIFIER_SAMPLER2DRECT .or\n"
+" \"sampler2DRectShadow\" .emit TYPE_SPECIFIER_SAMPLER2DRECTSHADOW .or\n"
 " type_name .emit TYPE_SPECIFIER_TYPENAME;\n"
 "type_specifier_nospace\n"
 " struct_specifier .emit TYPE_SPECIFIER_STRUCT;\n"
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index e972da459b..e91e0446ad 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -69,6 +69,8 @@ is_sampler_type(const slang_fully_specified_type *t)
    case SLANG_SPEC_SAMPLERCUBE:
    case SLANG_SPEC_SAMPLER1DSHADOW:
    case SLANG_SPEC_SAMPLER2DSHADOW:
+   case SLANG_SPEC_SAMPLER2DRECT:
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
       return GL_TRUE;
    default:
       return GL_FALSE;
@@ -118,6 +120,8 @@ _slang_sizeof_type_specifier(const slang_type_specifier *spec)
    case SLANG_SPEC_SAMPLERCUBE:
    case SLANG_SPEC_SAMPLER1DSHADOW:
    case SLANG_SPEC_SAMPLER2DSHADOW:
+   case SLANG_SPEC_SAMPLER2DRECT:
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
       return 1; /* special case */
    case SLANG_SPEC_STRUCT:
       {
@@ -196,6 +200,10 @@ sampler_to_texture_index(const slang_type_specifier_type type)
       return TEXTURE_1D_INDEX; /* XXX fix */
    case SLANG_SPEC_SAMPLER2DSHADOW:
       return TEXTURE_2D_INDEX; /* XXX fix */
+   case SLANG_SPEC_SAMPLER2DRECT:
+      return TEXTURE_RECT_INDEX;
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+      return TEXTURE_RECT_INDEX; /* XXX fix */
    default:
       return -1;
    }
@@ -357,6 +365,8 @@ static slang_asm_info AsmInfo[] = {
    { "vec4_texb3d", IR_TEXB, 1, 2 },  /* 3d w/ bias */
    { "vec4_texp3d", IR_TEXP, 1, 2 },  /* 3d w/ projection */
    { "vec4_texcube", IR_TEX, 1, 2 },  /* cubemap */
+   { "vec4_tex_rect", IR_TEX, 1, 2 }, /* rectangle */
+   { "vec4_texp_rect", IR_TEX, 1, 2 },/* rectangle w/ projection */
 
    /* unary op */
    { "int_to_float", IR_I_TO_F, 1, 1 },
diff --git a/src/mesa/shader/slang/slang_compile.c b/src/mesa/shader/slang/slang_compile.c
index e183752025..619b0de0d0 100644
--- a/src/mesa/shader/slang/slang_compile.c
+++ b/src/mesa/shader/slang/slang_compile.c
@@ -487,8 +487,10 @@ parse_type_qualifier(slang_parse_ctx * C, slang_type_qualifier * qual)
 #define TYPE_SPECIFIER_SAMPLERCUBE 19
 #define TYPE_SPECIFIER_SAMPLER1DSHADOW 20
 #define TYPE_SPECIFIER_SAMPLER2DSHADOW 21
-#define TYPE_SPECIFIER_STRUCT 22
-#define TYPE_SPECIFIER_TYPENAME 23
+#define TYPE_SPECIFIER_SAMPLER2DRECT 22
+#define TYPE_SPECIFIER_SAMPLER2DRECTSHADOW 23
+#define TYPE_SPECIFIER_STRUCT 24
+#define TYPE_SPECIFIER_TYPENAME 25
 
 static int
 parse_type_specifier(slang_parse_ctx * C, slang_output_ctx * O,
@@ -555,12 +557,18 @@ parse_type_specifier(slang_parse_ctx * C, slang_output_ctx * O,
    case TYPE_SPECIFIER_SAMPLERCUBE:
       spec->type = SLANG_SPEC_SAMPLERCUBE;
       break;
+   case TYPE_SPECIFIER_SAMPLER2DRECT:
+      spec->type = SLANG_SPEC_SAMPLER2DRECT;
+      break;
    case TYPE_SPECIFIER_SAMPLER1DSHADOW:
       spec->type = SLANG_SPEC_SAMPLER1DSHADOW;
       break;
    case TYPE_SPECIFIER_SAMPLER2DSHADOW:
       spec->type = SLANG_SPEC_SAMPLER2DSHADOW;
       break;
+   case TYPE_SPECIFIER_SAMPLER2DRECTSHADOW:
+      spec->type = SLANG_SPEC_SAMPLER2DRECTSHADOW;
+      break;
    case TYPE_SPECIFIER_STRUCT:
       spec->type = SLANG_SPEC_STRUCT;
       if (!parse_struct(C, O, &spec->_struct))
diff --git a/src/mesa/shader/slang/slang_compile_variable.c b/src/mesa/shader/slang/slang_compile_variable.c
index 09ca736c20..ae37aed514 100644
--- a/src/mesa/shader/slang/slang_compile_variable.c
+++ b/src/mesa/shader/slang/slang_compile_variable.c
@@ -62,6 +62,8 @@ static const type_specifier_type_name type_specifier_type_names[] = {
    {"samplerCube", SLANG_SPEC_SAMPLERCUBE},
    {"sampler1DShadow", SLANG_SPEC_SAMPLER1DSHADOW},
    {"sampler2DShadow", SLANG_SPEC_SAMPLER2DSHADOW},
+   {"sampler2DRect", SLANG_SPEC_SAMPLER2DRECT},
+   {"sampler2DRectShadow", SLANG_SPEC_SAMPLER2DRECTSHADOW},
    {NULL, SLANG_SPEC_VOID}
 };
 
diff --git a/src/mesa/shader/slang/slang_print.c b/src/mesa/shader/slang/slang_print.c
index a2f3691ddb..c377759bea 100644
--- a/src/mesa/shader/slang/slang_print.c
+++ b/src/mesa/shader/slang/slang_print.c
@@ -709,6 +709,10 @@ slang_type_string(slang_type_specifier_type t)
       return "sampler1DShadow";
    case SLANG_SPEC_SAMPLER2DSHADOW:
       return "sampler2DShadow";
+   case SLANG_SPEC_SAMPLER2DRECT:
+      return "sampler2DRect";
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+      return "sampler2DRectShadow";
    case SLANG_SPEC_STRUCT:
       return "struct";
    case SLANG_SPEC_ARRAY:
diff --git a/src/mesa/shader/slang/slang_storage.c b/src/mesa/shader/slang/slang_storage.c
index 74aff01aad..04995aa842 100644
--- a/src/mesa/shader/slang/slang_storage.c
+++ b/src/mesa/shader/slang/slang_storage.c
@@ -191,6 +191,8 @@ _slang_aggregate_variable(slang_storage_aggregate * agg,
    case SLANG_SPEC_SAMPLERCUBE:
    case SLANG_SPEC_SAMPLER1DSHADOW:
    case SLANG_SPEC_SAMPLER2DSHADOW:
+   case SLANG_SPEC_SAMPLER2DRECT:
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
       return aggregate_vector(agg, SLANG_STORE_INT, 1);
    case SLANG_SPEC_STRUCT:
       return aggregate_variables(agg, spec->_struct->fields, funcs, structs,
diff --git a/src/mesa/shader/slang/slang_typeinfo.h b/src/mesa/shader/slang/slang_typeinfo.h
index bde2e67ae2..f1c9a635b8 100644
--- a/src/mesa/shader/slang/slang_typeinfo.h
+++ b/src/mesa/shader/slang/slang_typeinfo.h
@@ -111,8 +111,10 @@ typedef enum slang_type_specifier_type_
    SLANG_SPEC_SAMPLER2D,
    SLANG_SPEC_SAMPLER3D,
    SLANG_SPEC_SAMPLERCUBE,
+   SLANG_SPEC_SAMPLER2DRECT,
    SLANG_SPEC_SAMPLER1DSHADOW,
    SLANG_SPEC_SAMPLER2DSHADOW,
+   SLANG_SPEC_SAMPLER2DRECTSHADOW,
    SLANG_SPEC_STRUCT,
    SLANG_SPEC_ARRAY
 } slang_type_specifier_type;