[Mesa-dev] [PATCH 05/10] i965: Enable ChooseTexFormat for supported GL_EXT_texture_integer formats.

[Eric Anholt]

We don't get to use the 3-component formats, but faking of RGB with
RGBA seems to be working.
---
 src/mesa/drivers/dri/intel/intel_context.c |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c
index 801b747..6b493e1 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -706,6 +706,34 @@ intelInitContext(struct intel_context *intel,
       ctx->TextureFormatSupported[MESA_FORMAT_SLA8] = true;
    }
 
+   if (intel->gen >= 4) {
+      /* Each combination of 32-bit ints are supported, but the RGB 32-bit ints
+       * don't support use as a render target (GPU hangs).
+       */
+      ctx->TextureFormatSupported[MESA_FORMAT_R_INT32] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RG_INT32] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RGBA_INT32] = GL_TRUE;
+
+      ctx->TextureFormatSupported[MESA_FORMAT_R_UINT32] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RG_UINT32] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RGBA_UINT32] = GL_TRUE;
+
+      /* For 16 and 8 bits, RGB is unsupported entirely. */
+      ctx->TextureFormatSupported[MESA_FORMAT_R_UINT16] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RG_UINT16] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RGBA_UINT16] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_R_INT16] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RG_INT16] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RGBA_INT16] = GL_TRUE;
+
+      ctx->TextureFormatSupported[MESA_FORMAT_R_UINT8] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RG_UINT8] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RGBA_UINT8] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_R_INT8] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RG_INT8] = GL_TRUE;
+      ctx->TextureFormatSupported[MESA_FORMAT_RGBA_INT8] = GL_TRUE;
+   }
+
 #ifdef TEXTURE_FLOAT_ENABLED
    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FLOAT32] = true;
    ctx->TextureFormatSupported[MESA_FORMAT_RG_FLOAT32] = true;
-- 
1.7.7