enable FXT1 texture compression for ixxx chipsets

commented out Keiths extensions strings

5 files changed, 114 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i915/i830_context.c b/src/mesa/drivers/dri/i915/i830_context.c
index d34fbb0d26..093a2f96f2 100644
--- a/src/mesa/drivers/dri/i915/i830_context.c
+++ b/src/mesa/drivers/dri/i915/i830_context.c
@@ -45,6 +45,7 @@
  */
 static const GLubyte *i830GetString( GLcontext *ctx, GLenum name )
 {
+#if 0
    if (name == GL_EXTENSIONS)
       return 
 	 "GL_ARB_multitexture "
@@ -82,7 +83,7 @@ static const GLubyte *i830GetString( GLcontext *ctx, GLenum name )
 	 "GL_MESA_window_pos "
 	 "GL_NV_texgen_reflection "
 	 "GL_SGIS_generate_mipmap ";
- 
+#endif 
    return intelGetString( ctx, name );
 }
 
diff --git a/src/mesa/drivers/dri/i915/i830_texstate.c b/src/mesa/drivers/dri/i915/i830_texstate.c
index a10359e6b3..476ee19391 100644
--- a/src/mesa/drivers/dri/i915/i830_texstate.c
+++ b/src/mesa/drivers/dri/i915/i830_texstate.c
@@ -106,6 +106,12 @@ static GLboolean i830SetTexImages( i830ContextPtr i830,
 		       TM0S1_COLORSPACE_CONVERSION);
       break;
 
+   case MESA_FORMAT_RGB_FXT1:
+   case MESA_FORMAT_RGBA_FXT1:
+     t->intel.texelBytes = 2;
+     textureFormat = MAPSURF_COMPRESSED | MT_COMPRESS_FXT1;
+     break;
+
    default:
       fprintf(stderr, "%s: bad image format\n", __FUNCTION__);
       abort();
diff --git a/src/mesa/drivers/dri/i915/i915_texstate.c b/src/mesa/drivers/dri/i915/i915_texstate.c
index 319a34c8b0..ec8f1fa202 100644
--- a/src/mesa/drivers/dri/i915/i915_texstate.c
+++ b/src/mesa/drivers/dri/i915/i915_texstate.c
@@ -122,6 +122,12 @@ static void i915SetTexImages( i915ContextPtr i915,
       ss2 |= SS2_COLORSPACE_CONVERSION;
       break;
 
+   case MESA_FORMAT_RGB_FXT1:
+   case MESA_FORMAT_RGBA_FXT1:
+     t->intel.texelBytes = 2;
+     textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
+     break;
+
    default:
       fprintf(stderr, "%s: bad image format\n", __FUNCTION__);
       abort();
diff --git a/src/mesa/drivers/dri/i915/intel_context.c b/src/mesa/drivers/dri/i915/intel_context.c
index 67b9df83a7..12489433bc 100644
--- a/src/mesa/drivers/dri/i915/intel_context.c
+++ b/src/mesa/drivers/dri/i915/intel_context.c
@@ -179,6 +179,8 @@ static const char * const card_extensions[] =
    "GL_SGIS_generate_mipmap",
    "GL_SGIS_texture_border_clamp",
    "GL_SGIS_texture_edge_clamp",
+   "GL_3DFX_texture_compression_FXT1",
+
    NULL
 };
 
diff --git a/src/mesa/drivers/dri/i915/intel_tex.c b/src/mesa/drivers/dri/i915/intel_tex.c
index 3a67943fef..6475950585 100644
--- a/src/mesa/drivers/dri/i915/intel_tex.c
+++ b/src/mesa/drivers/dri/i915/intel_tex.c
@@ -304,6 +304,83 @@ static void intelTexSubImage2D( GLcontext *ctx,
    }
 }
 
+static void intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
+                              GLint internalFormat,
+                              GLint width, GLint height, GLint border,
+                              GLsizei imageSize, const GLvoid *data,
+                              struct gl_texture_object *texObj,
+                              struct gl_texture_image *texImage )
+{
+   driTextureObject * t = (driTextureObject *) texObj->DriverData;
+   GLuint face;
+
+   /* which cube face or ordinary 2D image */
+   switch (target) {
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+      face = (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
+      ASSERT(face < 6);
+      break;
+   default:
+      face = 0;
+   }
+
+   assert(t);
+   intelFlush( ctx );
+   
+   driSwapOutTextureObject( t );
+   texImage->IsClientData = GL_FALSE;
+
+   if (INTEL_DEBUG & DEBUG_TEXTURE)
+     fprintf(stderr, "%s: Using normal storage\n", __FUNCTION__); 
+   
+   _mesa_store_compressed_teximage2d(ctx, target, level, internalFormat, width,
+				     height, border, imageSize, data, texObj, texImage);
+   
+   t->dirty_images[face] |= (1 << level);
+}
+
+
+static void intelCompressedTexSubImage2D( GLcontext *ctx, GLenum target, GLint level,
+                                 GLint xoffset, GLint yoffset,
+                                 GLsizei width, GLsizei height,
+                                 GLenum format,
+                                 GLsizei imageSize, const GLvoid *data,
+                                 struct gl_texture_object *texObj,
+                                 struct gl_texture_image *texImage )
+{
+   driTextureObject * t = (driTextureObject *) texObj->DriverData;
+   GLuint face;
+
+
+   /* which cube face or ordinary 2D image */
+   switch (target) {
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+      face = (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
+      ASSERT(face < 6);
+      break;
+   default:
+      face = 0;
+   }
+
+   assert( t ); /* this _should_ be true */
+   intelFlush( ctx );
+   driSwapOutTextureObject( t );
+   
+   _mesa_store_compressed_texsubimage2d(ctx, target, level, xoffset, yoffset, width,
+					height, format, imageSize, data, texObj, texImage);
+   
+   t->dirty_images[face] |= (1 << level);
+}
 
 
 static void intelTexImage3D( GLcontext *ctx, GLenum target, GLint level,
@@ -472,6 +549,11 @@ intelChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
       else
          return &_mesa_texformat_ycbcr_rev;
 
+   case GL_COMPRESSED_RGB_FXT1_3DFX:
+     return &_mesa_texformat_rgb_fxt1;
+   case GL_COMPRESSED_RGBA_FXT1_3DFX:
+     return &_mesa_texformat_rgba_fxt1;
+
    default:
       fprintf(stderr, "unexpected texture format in %s\n", __FUNCTION__);
       return NULL;
@@ -529,6 +611,20 @@ static void intelUploadTexImage( intelContextPtr intel,
 			       image->Width,
 			       image->Height);
    }
+   else if (image->IsCompressed) {
+      GLuint row_len = image->Width * 2;
+      GLubyte *dst = (GLubyte *)(t->BufAddr + offset);
+      GLubyte *src = (GLubyte *)image->Data;
+      GLuint j;
+
+      if ((image->IntFormat == GL_COMPRESSED_RGB_FXT1_3DFX || image->IntFormat == GL_COMPRESSED_RGBA_FXT1_3DFX))
+	{
+	  for (j = 0 ; j < image->Height/4 ; j++, dst += (t->Pitch)) {
+	    __memcpy(dst, src, row_len );
+	    src += row_len;
+	  }
+	}
+   }
    else {
       GLuint row_len = image->Width * image->TexFormat->TexelBytes;
       GLubyte *dst = (GLubyte *)(t->BufAddr + offset);
@@ -682,4 +778,6 @@ void intelInitTextureFuncs( struct dd_function_table *functions )
    functions->IsTextureResident         = driIsTextureResident;
    functions->TestProxyTexImage         = _mesa_test_proxy_teximage;
    functions->DeleteTexture             = intelDeleteTexture;
+   functions->CompressedTexImage2D      = intelCompressedTexImage2D;
+   functions->CompressedTexSubImage2D   = intelCompressedTexSubImage2D;
 }