glsl: implement support for GL_EXT_texture_array

GL_EXT_texture_array is different from the existing GL_MESA_texture_array
support in that the former is only supported for GLSL, not fixed-function.

The shadow compare versions of the sampler functions haven't been tested
yet.  The non-shadow versions have been tested with a new piglit test.

1 files changed, 50 insertions, 26 deletions

diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 6901b93d5d..adfea890b3 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -100,14 +100,18 @@ static GLboolean
 is_sampler_type(const slang_fully_specified_type *t)
 {
    switch (t->specifier.type) {
-   case SLANG_SPEC_SAMPLER1D:
-   case SLANG_SPEC_SAMPLER2D:
-   case SLANG_SPEC_SAMPLER3D:
-   case SLANG_SPEC_SAMPLERCUBE:
-   case SLANG_SPEC_SAMPLER1DSHADOW:
-   case SLANG_SPEC_SAMPLER2DSHADOW:
-   case SLANG_SPEC_SAMPLER2DRECT:
-   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+   case SLANG_SPEC_SAMPLER_1D:
+   case SLANG_SPEC_SAMPLER_2D:
+   case SLANG_SPEC_SAMPLER_3D:
+   case SLANG_SPEC_SAMPLER_CUBE:
+   case SLANG_SPEC_SAMPLER_1D_SHADOW:
+   case SLANG_SPEC_SAMPLER_2D_SHADOW:
+   case SLANG_SPEC_SAMPLER_RECT:
+   case SLANG_SPEC_SAMPLER_RECT_SHADOW:
+   case SLANG_SPEC_SAMPLER_1D_ARRAY:
+   case SLANG_SPEC_SAMPLER_2D_ARRAY:
+   case SLANG_SPEC_SAMPLER_1D_ARRAY_SHADOW:
+   case SLANG_SPEC_SAMPLER_2D_ARRAY_SHADOW:
       return GL_TRUE;
    default:
       return GL_FALSE;
@@ -222,14 +226,18 @@ _slang_sizeof_type_specifier(const slang_type_specifier *spec)
    case SLANG_SPEC_MAT43:
       sz = 4 * 4; /* 4 columns (regs) */
       break;
-   case SLANG_SPEC_SAMPLER1D:
-   case SLANG_SPEC_SAMPLER2D:
-   case SLANG_SPEC_SAMPLER3D:
-   case SLANG_SPEC_SAMPLERCUBE:
-   case SLANG_SPEC_SAMPLER1DSHADOW:
-   case SLANG_SPEC_SAMPLER2DSHADOW:
-   case SLANG_SPEC_SAMPLER2DRECT:
-   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+   case SLANG_SPEC_SAMPLER_1D:
+   case SLANG_SPEC_SAMPLER_2D:
+   case SLANG_SPEC_SAMPLER_3D:
+   case SLANG_SPEC_SAMPLER_CUBE:
+   case SLANG_SPEC_SAMPLER_1D_SHADOW:
+   case SLANG_SPEC_SAMPLER_2D_SHADOW:
+   case SLANG_SPEC_SAMPLER_RECT:
+   case SLANG_SPEC_SAMPLER_RECT_SHADOW:
+   case SLANG_SPEC_SAMPLER_1D_ARRAY:
+   case SLANG_SPEC_SAMPLER_2D_ARRAY:
+   case SLANG_SPEC_SAMPLER_1D_ARRAY_SHADOW:
+   case SLANG_SPEC_SAMPLER_2D_ARRAY_SHADOW:
       sz = 1; /* a sampler is basically just an integer index */
       break;
    case SLANG_SPEC_STRUCT:
@@ -310,22 +318,30 @@ static GLint
 sampler_to_texture_index(const slang_type_specifier_type type)
 {
    switch (type) {
-   case SLANG_SPEC_SAMPLER1D:
+   case SLANG_SPEC_SAMPLER_1D:
       return TEXTURE_1D_INDEX;
-   case SLANG_SPEC_SAMPLER2D:
+   case SLANG_SPEC_SAMPLER_2D:
       return TEXTURE_2D_INDEX;
-   case SLANG_SPEC_SAMPLER3D:
+   case SLANG_SPEC_SAMPLER_3D:
       return TEXTURE_3D_INDEX;
-   case SLANG_SPEC_SAMPLERCUBE:
+   case SLANG_SPEC_SAMPLER_CUBE:
       return TEXTURE_CUBE_INDEX;
-   case SLANG_SPEC_SAMPLER1DSHADOW:
+   case SLANG_SPEC_SAMPLER_1D_SHADOW:
       return TEXTURE_1D_INDEX; /* XXX fix */
-   case SLANG_SPEC_SAMPLER2DSHADOW:
+   case SLANG_SPEC_SAMPLER_2D_SHADOW:
       return TEXTURE_2D_INDEX; /* XXX fix */
-   case SLANG_SPEC_SAMPLER2DRECT:
+   case SLANG_SPEC_SAMPLER_RECT:
       return TEXTURE_RECT_INDEX;
-   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+   case SLANG_SPEC_SAMPLER_RECT_SHADOW:
       return TEXTURE_RECT_INDEX; /* XXX fix */
+   case SLANG_SPEC_SAMPLER_1D_ARRAY:
+      return TEXTURE_1D_ARRAY_INDEX;
+   case SLANG_SPEC_SAMPLER_2D_ARRAY:
+      return TEXTURE_2D_ARRAY_INDEX;
+   case SLANG_SPEC_SAMPLER_1D_ARRAY_SHADOW:
+      return TEXTURE_1D_ARRAY_INDEX;
+   case SLANG_SPEC_SAMPLER_2D_ARRAY_SHADOW:
+      return TEXTURE_2D_ARRAY_INDEX;
    default:
       return -1;
    }
@@ -453,6 +469,14 @@ static slang_asm_info AsmInfo[] = {
    { "vec4_tex_cube", IR_TEX, 1, 2 },      /* cubemap */
    { "vec4_tex_rect", IR_TEX, 1, 2 },      /* rectangle */
    { "vec4_tex_rect_bias", IR_TEX, 1, 2 }, /* rectangle w/ projection */
+   { "vec4_tex_1d_array", IR_TEX, 1, 2 },
+   { "vec4_tex_1d_array_bias", IR_TEXB, 1, 2 },
+   { "vec4_tex_1d_array_shadow", IR_TEX, 1, 2 },
+   { "vec4_tex_1d_array_bias_shadow", IR_TEXB, 1, 2 },
+   { "vec4_tex_2d_array", IR_TEX, 1, 2 },
+   { "vec4_tex_2d_array_bias", IR_TEXB, 1, 2 },
+   { "vec4_tex_2d_array_shadow", IR_TEX, 1, 2 },
+   { "vec4_tex_2d_array_bias_shadow", IR_TEXB, 1, 2 },
 
    /* texture / sampler but with shadow comparison */
    { "vec4_tex_1d_shadow", IR_TEX_SH, 1, 2 },
@@ -4923,8 +4947,8 @@ is_rect_sampler_spec(const slang_type_specifier *spec)
    while (spec->_array) {
       spec = spec->_array;
    }
-   return spec->type == SLANG_SPEC_SAMPLER2DRECT ||
-          spec->type == SLANG_SPEC_SAMPLER2DRECTSHADOW;
+   return spec->type == SLANG_SPEC_SAMPLER_RECT ||
+          spec->type == SLANG_SPEC_SAMPLER_RECT_SHADOW;
 }