mesa: add ARB_texture_buffer_range glTextureBufferRangeEXT function
[mesa.git] / src / mesa / main / texformat.c
index 004e7ebac823440938d865d540f5c81461cf77cf..c7765bcdb2fba10d61fcc0eb0ee1d572cbe426f2 100644 (file)
@@ -38,6 +38,7 @@
 #include "mtypes.h"
 #include "texcompress.h"
 #include "texformat.h"
+#include "glformats.h"
 
 #define RETURN_IF_SUPPORTED(f) do {            \
    if (ctx->TextureFormatSupported[f])         \
@@ -73,19 +74,21 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
          RETURN_IF_SUPPORTED(MESA_FORMAT_B4G4R4A4_UNORM);
       } else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
          RETURN_IF_SUPPORTED(MESA_FORMAT_B5G5R5A1_UNORM);
+      } else if (type == GL_UNSIGNED_SHORT_5_5_5_1) {
+         RETURN_IF_SUPPORTED(MESA_FORMAT_B5G5R5A1_UNORM);
       } else if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
          RETURN_IF_SUPPORTED(MESA_FORMAT_B10G10R10A2_UNORM);
       }
-      RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_UNORM);
-      RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
-      break;
+      /* fallthrough */
 
    case GL_RGBA8:
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_UNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_UNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
       break;
    case GL_RGB5_A1:
       RETURN_IF_SUPPORTED(MESA_FORMAT_B5G5R5A1_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A1B5G5R5_UNORM);
       break;
    case GL_RGBA2:
       RETURN_IF_SUPPORTED(MESA_FORMAT_A4R4G4B4_UNORM); /* just to test another format*/
@@ -97,6 +100,7 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
 
    /* deep RGBA formats */
    case GL_RGB10_A2:
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R10G10B10A2_UNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B10G10R10A2_UNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
       break;
@@ -114,8 +118,15 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
       if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
          RETURN_IF_SUPPORTED(MESA_FORMAT_B10G10R10A2_UNORM);
       }
+      if (type == GL_UNSIGNED_SHORT_5_6_5) {
+         RETURN_IF_SUPPORTED(MESA_FORMAT_B5G6R5_UNORM);
+      }
       /* fallthrough */
    case GL_RGB8:
+      RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UNORM8);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8X8_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_UNORM);
+
       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_UNORM8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8X8_UNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
@@ -151,12 +162,14 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
    case GL_ALPHA4:
    case GL_ALPHA8:
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UNORM8);
       break;
 
    case GL_ALPHA12:
    case GL_ALPHA16:
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM16);
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UNORM8);
       break;
 
    /* Luminance formats */
@@ -176,21 +189,21 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
       /* Luminance/Alpha formats */
    case GL_LUMINANCE4_ALPHA4:
       RETURN_IF_SUPPORTED(MESA_FORMAT_L4A4_UNORM);
-      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UNORM8);
       break;
 
    case 2:
    case GL_LUMINANCE_ALPHA:
    case GL_LUMINANCE6_ALPHA2:
    case GL_LUMINANCE8_ALPHA8:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UNORM8);
       break;
 
    case GL_LUMINANCE12_ALPHA4:
    case GL_LUMINANCE12_ALPHA12:
    case GL_LUMINANCE16_ALPHA16:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_L16A16_UNORM);
-      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UNORM16);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UNORM8);
       break;
 
    case GL_INTENSITY:
@@ -220,12 +233,13 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
 
    case GL_COMPRESSED_ALPHA_ARB:
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UNORM8);
       break;
    case GL_COMPRESSED_LUMINANCE_ARB:
       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UNORM8);
       break;
    case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_UNORM8);
       break;
    case GL_COMPRESSED_INTENSITY_ARB:
       RETURN_IF_SUPPORTED(MESA_FORMAT_I_UNORM8);
@@ -239,9 +253,7 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
        * 1D ARRAY textures in S3TC format.
        */
       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
-         if (ctx->Mesa_DXTn)
-            RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
-         RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
+         RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
       }
       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_UNORM8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8X8_UNORM);
@@ -250,9 +262,7 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
    case GL_COMPRESSED_RGBA_ARB:
       /* We don't use texture compression for 1D and 1D array textures. */
       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
-         if (ctx->Mesa_DXTn)
-            RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
-         RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
+         RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
       }
       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_UNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
@@ -269,79 +279,6 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
          RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
       break;
 
-   /* For non-generic compressed format we assert two things:
-    *
-    * 1. The format has already been validated against the set of available
-    *    extensions.
-    *
-    * 2. The driver only enables the extension if it supports all of the
-    *    formats that are part of that extension.
-    */
-   case GL_COMPRESSED_RGB_FXT1_3DFX:
-      return MESA_FORMAT_RGB_FXT1;
-   case GL_COMPRESSED_RGBA_FXT1_3DFX:
-      return MESA_FORMAT_RGBA_FXT1;
-   case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
-   case GL_RGB_S3TC:
-   case GL_RGB4_S3TC:
-      return MESA_FORMAT_RGB_DXT1;
-   case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
-      return MESA_FORMAT_RGBA_DXT1;
-   case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
-   case GL_RGBA_S3TC:
-   case GL_RGBA4_S3TC:
-      return MESA_FORMAT_RGBA_DXT3;
-   case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
-      return MESA_FORMAT_RGBA_DXT5;
-   case GL_COMPRESSED_RED_RGTC1:
-      return MESA_FORMAT_R_RGTC1_UNORM;
-   case GL_COMPRESSED_SIGNED_RED_RGTC1:
-      return MESA_FORMAT_R_RGTC1_SNORM;
-   case GL_COMPRESSED_RG_RGTC2:
-      return MESA_FORMAT_RG_RGTC2_UNORM;
-   case GL_COMPRESSED_SIGNED_RG_RGTC2:
-      return MESA_FORMAT_RG_RGTC2_SNORM;
-   case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
-      return MESA_FORMAT_L_LATC1_UNORM;
-   case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
-      return MESA_FORMAT_L_LATC1_SNORM;
-   case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
-      return MESA_FORMAT_LA_LATC2_UNORM;
-   case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
-      return MESA_FORMAT_LA_LATC2_SNORM;
-   case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
-      return MESA_FORMAT_LA_LATC2_UNORM;
-   case GL_ETC1_RGB8_OES:
-      return MESA_FORMAT_ETC1_RGB8;
-   case GL_COMPRESSED_RGB8_ETC2:
-      return MESA_FORMAT_ETC2_RGB8;
-   case GL_COMPRESSED_SRGB8_ETC2:
-      return MESA_FORMAT_ETC2_SRGB8;
-   case GL_COMPRESSED_RGBA8_ETC2_EAC:
-      return MESA_FORMAT_ETC2_RGBA8_EAC;
-   case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
-      return MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC;
-   case GL_COMPRESSED_R11_EAC:
-      return MESA_FORMAT_ETC2_R11_EAC;
-   case GL_COMPRESSED_RG11_EAC:
-      return MESA_FORMAT_ETC2_RG11_EAC;
-   case GL_COMPRESSED_SIGNED_R11_EAC:
-      return MESA_FORMAT_ETC2_SIGNED_R11_EAC;
-   case GL_COMPRESSED_SIGNED_RG11_EAC:
-      return MESA_FORMAT_ETC2_SIGNED_RG11_EAC;
-   case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
-      return MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
-   case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
-      return MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
-   case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
-      return MESA_FORMAT_SRGB_DXT1;
-   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
-      return MESA_FORMAT_SRGBA_DXT1;
-   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
-      return MESA_FORMAT_SRGBA_DXT3;
-   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
-      return MESA_FORMAT_SRGBA_DXT5;
-
    case GL_ALPHA16F_ARB:
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT16);
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_FLOAT32);
@@ -415,12 +352,12 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
 
    case GL_RGB9_E5:
       /* GL_EXT_texture_shared_exponent -- just one format to support */
-      ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R9G9B9E5_FLOAT]);
+      assert(ctx->TextureFormatSupported[MESA_FORMAT_R9G9B9E5_FLOAT]);
       return MESA_FORMAT_R9G9B9E5_FLOAT;
 
    case GL_R11F_G11F_B10F:
       /* GL_EXT_texture_packed_float -- just one format to support */
-      ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11G11B10_FLOAT]);
+      assert(ctx->TextureFormatSupported[MESA_FORMAT_R11G11B10_FLOAT]);
       return MESA_FORMAT_R11G11B10_FLOAT;
 
    case GL_DEPTH_STENCIL_EXT:
@@ -430,31 +367,30 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
       break;
 
    case GL_DEPTH_COMPONENT32F:
-      ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z_FLOAT32]);
+      assert(ctx->TextureFormatSupported[MESA_FORMAT_Z_FLOAT32]);
       return MESA_FORMAT_Z_FLOAT32;
    case GL_DEPTH32F_STENCIL8:
-      ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_S8X24_UINT]);
+      assert(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_S8X24_UINT]);
       return MESA_FORMAT_Z32_FLOAT_S8X24_UINT;
 
-   case GL_DUDV_ATI:
-   case GL_DU8DV8_ATI:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
-      break;
-
    case GL_RED_SNORM:
    case GL_R8_SNORM:
       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SNORM8);
       break;
    case GL_RG_SNORM:
    case GL_RG8_SNORM:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_SNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_RG_SNORM8);
       break;
    case GL_RGB_SNORM:
    case GL_RGB8_SNORM:
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8X8_SNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_X8B8G8R8_SNORM);
-      /* FALLTHROUGH */
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
+      break;
    case GL_RGBA_SNORM:
    case GL_RGBA8_SNORM:
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
       break;
@@ -473,7 +409,7 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
       break;
    case GL_LUMINANCE_ALPHA_SNORM:
    case GL_LUMINANCE8_ALPHA8_SNORM:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SNORM8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SNORM);
       RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SNORM);
       break;
@@ -487,7 +423,7 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
       RETURN_IF_SUPPORTED(MESA_FORMAT_R_SNORM16);
       break;
    case GL_RG16_SNORM:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_R16G16_SNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_RG_SNORM16);
       break;
    case GL_RGB16_SNORM:
       RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_SNORM16);
@@ -522,43 +458,60 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
 
    case GL_SRGB_EXT:
    case GL_SRGB8_EXT:
+      /* there is no MESA_FORMAT_RGB_SRGB8 */
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8X8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SRGB);
+
       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_SRGB8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
+
+      RETURN_IF_SUPPORTED(MESA_FORMAT_X8B8G8R8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8R8G8B8_SRGB);
       break;
    case GL_SRGB_ALPHA_EXT:
    case GL_SRGB8_ALPHA8_EXT:
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8B8A8_SRGB);
+
       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SRGB);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8R8G8B8_SRGB);
+      break;
+   case GL_SR8_EXT:
+      RETURN_IF_SUPPORTED(MESA_FORMAT_R_SRGB8);
       break;
    case GL_SLUMINANCE_EXT:
    case GL_SLUMINANCE8_EXT:
       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SRGB8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8R8G8B8_SRGB);
       break;
    case GL_SLUMINANCE_ALPHA_EXT:
    case GL_SLUMINANCE8_ALPHA8_EXT:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SRGB8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8R8G8B8_SRGB);
       break;
    case GL_COMPRESSED_SLUMINANCE_EXT:
       RETURN_IF_SUPPORTED(MESA_FORMAT_L_SRGB8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8R8G8B8_SRGB);
       break;
    case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_LA_SRGB8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8R8G8B8_SRGB);
       break;
    case GL_COMPRESSED_SRGB_EXT:
-      if (ctx->Mesa_DXTn)
-         RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
       RETURN_IF_SUPPORTED(MESA_FORMAT_BGR_SRGB8);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8R8G8B8_SRGB);
       break;
    case GL_COMPRESSED_SRGB_ALPHA_EXT:
-      if (ctx->Mesa_DXTn)
-         RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
+      RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
       RETURN_IF_SUPPORTED(MESA_FORMAT_A8B8G8R8_SRGB);
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_SRGB);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_A8R8G8B8_SRGB);
       break;
 
    case GL_ALPHA8UI_EXT:
@@ -724,17 +677,17 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
 
    case GL_RG:
    case GL_RG8:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UNORM8);
       break;
 
    case GL_COMPRESSED_RG:
       if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
          RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2_UNORM);
-      RETURN_IF_SUPPORTED(MESA_FORMAT_R8G8_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UNORM8);
       break;
 
    case GL_RG16:
-      RETURN_IF_SUPPORTED(MESA_FORMAT_R16G16_UNORM);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UNORM16);
       break;
 
    case GL_R16F:
@@ -811,23 +764,26 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
    case GL_BGRA:
       RETURN_IF_SUPPORTED(MESA_FORMAT_B8G8R8A8_UNORM);
       break;
-   }
 
-   _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
-                 _mesa_lookup_enum_by_nr(internalFormat));
-   return MESA_FORMAT_NONE;
-}
+   case GL_STENCIL_INDEX:
+   case GL_STENCIL_INDEX8:
+      RETURN_IF_SUPPORTED(MESA_FORMAT_S_UINT8);
+      break;
 
-GLboolean
-_mesa_tex_target_is_array(GLenum target)
-{
-   switch (target) {
-   case GL_TEXTURE_1D_ARRAY_EXT:
-   case GL_TEXTURE_2D_ARRAY_EXT:
-   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
-   case GL_TEXTURE_CUBE_MAP_ARRAY:
-      return GL_TRUE;
    default:
-      return GL_FALSE;
+      /* For non-generic compressed format we assert two things:
+       *
+       * 1. The format has already been validated against the set of available
+       *    extensions.
+       *
+       * 2. The driver only enables the extension if it supports all of the
+       *    formats that are part of that extension.
+       */
+      if (_mesa_is_compressed_format(ctx, internalFormat))
+         return _mesa_glenum_to_compressed_format(internalFormat);
    }
+
+   _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
+                 _mesa_enum_to_string(internalFormat));
+   return MESA_FORMAT_NONE;
 }