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, 20 insertions, 0 deletions

diff --git a/src/mesa/shader/slang/library/slang_vertex_builtin.gc b/src/mesa/shader/slang/library/slang_vertex_builtin.gc
index 9ad5f35425..0c67c2ef20 100644
--- a/src/mesa/shader/slang/library/slang_vertex_builtin.gc
+++ b/src/mesa/shader/slang/library/slang_vertex_builtin.gc
@@ -188,3 +188,23 @@ vec4 shadow2DProjLod(const sampler2DShadow sampler, const vec4 coord,
    __asm vec4_tex_2d_bias_shadow __retVal, sampler, pcoord;
 }
 
+
+//// GL_EXT_texture_array
+
+vec4 texture1DArrayLod(const sampler1DArray sampler, const vec2 coord, const float lod)
+{
+   vec4 coord4;
+   coord4.xy = coord;
+   coord4.w = lod;
+   __asm vec4_tex_1d_array_bias __retVal, sampler, coord4;
+}
+
+
+vec4 texture2DArrayLod(const sampler2DArray sampler, const vec3 coord, const float lod)
+{
+   vec4 coord4;
+   coord4.xyz = coord;
+   coord4.w = lod;
+   __asm vec4_tex_2d_array_bias __retVal, sampler, coord4;
+}
+