Make GL_ARB_texture_compression mandatory

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>

9 files changed, 106 insertions, 138 deletions

diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index 3be7fd5a2d..36586758a4 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -1006,9 +1006,8 @@ _mesa_PopAttrib(void)
                _mesa_Hint(GL_FOG_HINT, hint->Fog);
                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
                           hint->ClipVolumeClipping);
-               if (ctx->Extensions.ARB_texture_compression)
-                  _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
-                             hint->TextureCompression);
+	       _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
+			  hint->TextureCompression);
             }
             break;
          case GL_LIGHTING_BIT:
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 4ebdb5d9ae..46ca2ce766 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -64,7 +64,7 @@ static const struct {
    { OFF, "GL_ARB_shadow",                     F(ARB_shadow) },
    { OFF, "GL_ARB_shadow_ambient",             F(ARB_shadow_ambient) },
    { OFF, "GL_ARB_texture_border_clamp",       F(ARB_texture_border_clamp) },
-   { OFF, "GL_ARB_texture_compression",        F(ARB_texture_compression) },
+   { ON,  "GL_ARB_texture_compression",        F(ARB_texture_compression) },
    { OFF, "GL_ARB_texture_cube_map",           F(ARB_texture_cube_map) },
    { OFF, "GL_ARB_texture_env_add",            F(EXT_texture_env_add) },
    { OFF, "GL_ARB_texture_env_combine",        F(ARB_texture_env_combine) },
@@ -345,7 +345,7 @@ _mesa_enable_1_3_extensions(GLcontext *ctx)
    ctx->Extensions.ARB_multisample = GL_TRUE;
    ctx->Extensions.ARB_multitexture = GL_TRUE;
    ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
-   ctx->Extensions.ARB_texture_compression = GL_TRUE;
+   /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/
    ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
    ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
    ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index a5909913c8..d214ddc890 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -1078,15 +1078,12 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
          params[0] = INT_TO_BOOLEAN((1 << (ctx->Const.MaxCubeTextureLevels - 1)));
          break;
       case GL_TEXTURE_COMPRESSION_HINT_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetBooleanv");
          params[0] = INT_TO_BOOLEAN(ctx->Hint.TextureCompression);
          break;
       case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetBooleanv");
          params[0] = INT_TO_BOOLEAN(_mesa_get_compressed_formats(ctx, NULL, GL_FALSE));
          break;
       case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetBooleanv");
          {
          GLint formats[100];
          GLuint i, n = _mesa_get_compressed_formats(ctx, formats, GL_FALSE);
@@ -2930,15 +2927,12 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
          params[0] = (GLfloat)((1 << (ctx->Const.MaxCubeTextureLevels - 1)));
          break;
       case GL_TEXTURE_COMPRESSION_HINT_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetFloatv");
          params[0] = (GLfloat)(ctx->Hint.TextureCompression);
          break;
       case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetFloatv");
          params[0] = (GLfloat)(_mesa_get_compressed_formats(ctx, NULL, GL_FALSE));
          break;
       case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetFloatv");
          {
          GLint formats[100];
          GLuint i, n = _mesa_get_compressed_formats(ctx, formats, GL_FALSE);
@@ -4782,15 +4776,12 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
          params[0] = (1 << (ctx->Const.MaxCubeTextureLevels - 1));
          break;
       case GL_TEXTURE_COMPRESSION_HINT_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetIntegerv");
          params[0] = ctx->Hint.TextureCompression;
          break;
       case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetIntegerv");
          params[0] = _mesa_get_compressed_formats(ctx, NULL, GL_FALSE);
          break;
       case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
-         CHECK_EXT1(ARB_texture_compression, "GetIntegerv");
          {
          GLint formats[100];
          GLuint i, n = _mesa_get_compressed_formats(ctx, formats, GL_FALSE);
diff --git a/src/mesa/main/get_gen.py b/src/mesa/main/get_gen.py
index 4bdbfed0bf..c4d0aa9cc9 100644
--- a/src/mesa/main/get_gen.py
+++ b/src/mesa/main/get_gen.py
@@ -523,10 +523,10 @@ StateVars = [
 
 	# GL_ARB_texture_compression */
 	( "GL_TEXTURE_COMPRESSION_HINT_ARB", GLint,
-	  ["ctx->Hint.TextureCompression"], "", ["ARB_texture_compression"] ),
+	  ["ctx->Hint.TextureCompression"], "", None ),
 	( "GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB", GLint,
 	  ["_mesa_get_compressed_formats(ctx, NULL, GL_FALSE)"],
-	  "", ["ARB_texture_compression"] ),
+	  "", None ),
 	( "GL_COMPRESSED_TEXTURE_FORMATS_ARB", GLenum,
 	  [],
 	  """GLint formats[100];
@@ -534,7 +534,7 @@ StateVars = [
          ASSERT(n <= 100);
          for (i = 0; i < n; i++)
             params[i] = CONVERSION(formats[i]);""",
-	  ["ARB_texture_compression"] ),
+	  None ),
 
 	# GL_EXT_compiled_vertex_array
 	( "GL_ARRAY_ELEMENT_LOCK_FIRST_EXT", GLint, ["ctx->Array.LockFirst"],
diff --git a/src/mesa/main/hint.c b/src/mesa/main/hint.c
index dcfa9c7363..e2d4129a38 100644
--- a/src/mesa/main/hint.c
+++ b/src/mesa/main/hint.c
@@ -89,10 +89,6 @@ _mesa_Hint( GLenum target, GLenum mode )
 
       /* GL_ARB_texture_compression */
       case GL_TEXTURE_COMPRESSION_HINT_ARB:
-         if (!ctx->Extensions.ARB_texture_compression) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)");
-	    return;
-         }
 	 if (ctx->Hint.TextureCompression == mode)
 	    return;
 	 FLUSH_VERTICES(ctx, _NEW_HINT);
diff --git a/src/mesa/main/texcompress.c b/src/mesa/main/texcompress.c
index 3ff633acd2..09eba151c0 100644
--- a/src/mesa/main/texcompress.c
+++ b/src/mesa/main/texcompress.c
@@ -56,60 +56,58 @@ GLuint
 _mesa_get_compressed_formats(GLcontext *ctx, GLint *formats, GLboolean all)
 {
    GLuint n = 0;
-   if (ctx->Extensions.ARB_texture_compression) {
-      if (ctx->Extensions.TDFX_texture_compression_FXT1) {
-         if (formats) {
-            formats[n++] = GL_COMPRESSED_RGB_FXT1_3DFX;
-            formats[n++] = GL_COMPRESSED_RGBA_FXT1_3DFX;
-         }
-         else {
-            n += 2;
-         }
+   if (ctx->Extensions.TDFX_texture_compression_FXT1) {
+      if (formats) {
+         formats[n++] = GL_COMPRESSED_RGB_FXT1_3DFX;
+         formats[n++] = GL_COMPRESSED_RGBA_FXT1_3DFX;
       }
-      if (ctx->Extensions.EXT_texture_compression_s3tc) {
-         if (formats) {
-            formats[n++] = GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
-            /* This format has some restrictions/limitations and so should
-             * not be returned via the GL_COMPRESSED_TEXTURE_FORMATS query.
-             * Specifically, all transparent pixels become black.  NVIDIA
-             * omits this format too.
-             */
-            if (all)
-               formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
-            formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
-            formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
-         }
-         else {
-            n += 3;
-            if (all)
-               n += 1;
-         }
+      else {
+         n += 2;
       }
-      if (ctx->Extensions.S3_s3tc) {
-         if (formats) {
-            formats[n++] = GL_RGB_S3TC;
-            formats[n++] = GL_RGB4_S3TC;
-            formats[n++] = GL_RGBA_S3TC;
-            formats[n++] = GL_RGBA4_S3TC;
-         }
-         else {
-            n += 4;
-         }
+   }
+   if (ctx->Extensions.EXT_texture_compression_s3tc) {
+      if (formats) {
+         formats[n++] = GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
+         /* This format has some restrictions/limitations and so should
+          * not be returned via the GL_COMPRESSED_TEXTURE_FORMATS query.
+          * Specifically, all transparent pixels become black.  NVIDIA
+          * omits this format too.
+          */
+         if (all)
+             formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
+         formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
+         formats[n++] = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
+      }
+      else {
+         n += 3;
+         if (all)
+             n += 1;
+      }
+   }
+   if (ctx->Extensions.S3_s3tc) {
+      if (formats) {
+         formats[n++] = GL_RGB_S3TC;
+         formats[n++] = GL_RGB4_S3TC;
+         formats[n++] = GL_RGBA_S3TC;
+         formats[n++] = GL_RGBA4_S3TC;
+      }
+      else {
+         n += 4;
       }
+   }
 #if FEATURE_EXT_texture_sRGB
-      if (ctx->Extensions.EXT_texture_sRGB) {
-         if (formats) {
-            formats[n++] = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT;
-            formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
-            formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
-            formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
-         }
-         else {
-            n += 4;
-         }
+   if (ctx->Extensions.EXT_texture_sRGB) {
+      if (formats) {
+         formats[n++] = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT;
+         formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
+         formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
+         formats[n++] = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
+      }
+      else {
+         n += 4;
       }
-#endif /* FEATURE_EXT_texture_sRGB */
    }
+#endif /* FEATURE_EXT_texture_sRGB */
    return n;
 }
 
diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index 08725846c6..ffbb7fb19d 100644
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -1481,41 +1481,39 @@ _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
       }
    }
 
-   if (ctx->Extensions.ARB_texture_compression) {
-      switch (internalFormat) {
-         case GL_COMPRESSED_ALPHA_ARB:
-            return &_mesa_texformat_alpha;
-         case GL_COMPRESSED_LUMINANCE_ARB:
-            return &_mesa_texformat_luminance;
-         case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
-            return &_mesa_texformat_luminance_alpha;
-         case GL_COMPRESSED_INTENSITY_ARB:
-            return &_mesa_texformat_intensity;
-         case GL_COMPRESSED_RGB_ARB:
+   switch (internalFormat) {
+      case GL_COMPRESSED_ALPHA_ARB:
+         return &_mesa_texformat_alpha;
+      case GL_COMPRESSED_LUMINANCE_ARB:
+         return &_mesa_texformat_luminance;
+      case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
+         return &_mesa_texformat_luminance_alpha;
+      case GL_COMPRESSED_INTENSITY_ARB:
+         return &_mesa_texformat_intensity;
+      case GL_COMPRESSED_RGB_ARB:
 #if FEATURE_texture_fxt1
-            if (ctx->Extensions.TDFX_texture_compression_FXT1)
-               return &_mesa_texformat_rgb_fxt1;
+         if (ctx->Extensions.TDFX_texture_compression_FXT1)
+            return &_mesa_texformat_rgb_fxt1;
 #endif
 #if FEATURE_texture_s3tc
-            if (ctx->Extensions.EXT_texture_compression_s3tc ||
-                ctx->Extensions.S3_s3tc)
-               return &_mesa_texformat_rgb_dxt1;
+         if (ctx->Extensions.EXT_texture_compression_s3tc ||
+             ctx->Extensions.S3_s3tc)
+            return &_mesa_texformat_rgb_dxt1;
 #endif
-            return &_mesa_texformat_rgb;
-         case GL_COMPRESSED_RGBA_ARB:
+         return &_mesa_texformat_rgb;
+      case GL_COMPRESSED_RGBA_ARB:
 #if FEATURE_texture_fxt1
-            if (ctx->Extensions.TDFX_texture_compression_FXT1)
-               return &_mesa_texformat_rgba_fxt1;
+         if (ctx->Extensions.TDFX_texture_compression_FXT1)
+            return &_mesa_texformat_rgba_fxt1;
 #endif
 #if FEATURE_texture_s3tc
-            if (ctx->Extensions.EXT_texture_compression_s3tc ||
-                ctx->Extensions.S3_s3tc)
-               return &_mesa_texformat_rgba_dxt3; /* Not rgba_dxt1, see spec */
+         if (ctx->Extensions.EXT_texture_compression_s3tc ||
+             ctx->Extensions.S3_s3tc)
+            return &_mesa_texformat_rgba_dxt3; /* Not rgba_dxt1, see spec */
 #endif
-            return &_mesa_texformat_rgba;
-         default:
-            ; /* fallthrough */
-      }
+         return &_mesa_texformat_rgba;
+      default:
+         ; /* fallthrough */
    }
 
    if (ctx->Extensions.MESA_ycbcr_texture) {
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 9e968ba743..2f594532cc 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -253,23 +253,21 @@ _mesa_base_tex_format( GLcontext *ctx, GLint internalFormat )
       }
    }
 
-   if (ctx->Extensions.ARB_texture_compression) {
-      switch (internalFormat) {
-         case GL_COMPRESSED_ALPHA:
-            return GL_ALPHA;
-         case GL_COMPRESSED_LUMINANCE:
-            return GL_LUMINANCE;
-         case GL_COMPRESSED_LUMINANCE_ALPHA:
-            return GL_LUMINANCE_ALPHA;
-         case GL_COMPRESSED_INTENSITY:
-            return GL_INTENSITY;
-         case GL_COMPRESSED_RGB:
-            return GL_RGB;
-         case GL_COMPRESSED_RGBA:
-            return GL_RGBA;
-         default:
-            ; /* fallthrough */
-      }
+   switch (internalFormat) {
+   case GL_COMPRESSED_ALPHA:
+      return GL_ALPHA;
+   case GL_COMPRESSED_LUMINANCE:
+      return GL_LUMINANCE;
+   case GL_COMPRESSED_LUMINANCE_ALPHA:
+      return GL_LUMINANCE_ALPHA;
+   case GL_COMPRESSED_INTENSITY:
+      return GL_INTENSITY;
+   case GL_COMPRESSED_RGB:
+      return GL_RGB;
+   case GL_COMPRESSED_RGBA:
+      return GL_RGBA;
+   default:
+      ; /* fallthrough */
    }
          
    if (ctx->Extensions.TDFX_texture_compression_FXT1) {
diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c
index f610fa8dda..8df22fe9e2 100644
--- a/src/mesa/main/texparam.c
+++ b/src/mesa/main/texparam.c
@@ -849,33 +849,21 @@ _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
 
       /* GL_ARB_texture_compression */
       case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
-         if (ctx->Extensions.ARB_texture_compression) {
-            if (img->IsCompressed && !isProxy) {
-               /* Don't use ctx->Driver.CompressedTextureSize() since that
-                * may returned a padded hardware size.
-                */
-               *params = _mesa_compressed_texture_size(ctx, img->Width,
-                                                   img->Height, img->Depth,
-                                                   img->TexFormat->MesaFormat);
-            }
-            else {
-               _mesa_error(ctx, GL_INVALID_OPERATION,
-                           "glGetTexLevelParameter[if]v(pname)");
-            }
-         }
-         else {
-            _mesa_error(ctx, GL_INVALID_ENUM,
-                        "glGetTexLevelParameter[if]v(pname)");
-         }
+	 if (img->IsCompressed && !isProxy) {
+	    /* Don't use ctx->Driver.CompressedTextureSize() since that
+	     * may returned a padded hardware size.
+	     */
+	    *params = _mesa_compressed_texture_size(ctx, img->Width,
+						    img->Height, img->Depth,
+						    img->TexFormat->MesaFormat);
+	 }
+	 else {
+	    _mesa_error(ctx, GL_INVALID_OPERATION,
+			"glGetTexLevelParameter[if]v(pname)");
+	 }
          break;
       case GL_TEXTURE_COMPRESSED:
-         if (ctx->Extensions.ARB_texture_compression) {
-            *params = (GLint) img->IsCompressed;
-         }
-         else {
-            _mesa_error(ctx, GL_INVALID_ENUM,
-                        "glGetTexLevelParameter[if]v(pname)");
-         }
+         *params = (GLint) img->IsCompressed;
          break;
 
       /* GL_ARB_texture_float */