glsl: add support for ARB_texture_multisample

V2: - emit `sample` parameter properly for multisample texelFetch()
    - fix spurious whitespace change
    - introduce a new opcode ir_txf_ms rather than overloading the
      existing ir_txf further. This makes doing the right thing in
      the driver somewhat simpler.

V3: - fix weird whitespace

V4: - don't forget to include the new opcode in tex_opcode_strs[]
      (thanks Kenneth for spotting this)

Signed-off-by: Chris Forbes <[email protected]>
[V2] Reviewed-by: Eric Anholt <[email protected]>
[V2] Reviewed-by: Paul Berry <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/glsl/builtins/profiles/ARB_texture_multisample.glsl b/src/glsl/builtins/profiles/ARB_texture_multisample.glsl
new file mode 100644
index 00000000000..4fa67e95e30
--- /dev/null
+++ b/src/glsl/builtins/profiles/ARB_texture_multisample.glsl
@@ -0,0 +1,18 @@
+#version 130
+#extension GL_ARB_texture_multisample : enable
+
+ivec2 textureSize( sampler2DMS sampler);
+ivec2 textureSize(isampler2DMS sampler);
+ivec2 textureSize(usampler2DMS sampler);
+
+ivec3 textureSize( sampler2DMSArray sampler);
+ivec3 textureSize(isampler2DMSArray sampler);
+ivec3 textureSize(usampler2DMSArray sampler);
+
+ vec4 texelFetch( sampler2DMS sampler, ivec2 P, int sample);
+ivec4 texelFetch(isampler2DMS sampler, ivec2 P, int sample);
+uvec4 texelFetch(usampler2DMS sampler, ivec2 P, int sample);
+
+ vec4 texelFetch( sampler2DMSArray sampler, ivec3 P, int sample);
+ivec4 texelFetch(isampler2DMSArray sampler, ivec3 P, int sample);
+uvec4 texelFetch(usampler2DMSArray sampler, ivec3 P, int sample);