r200_tex.c

mesa-6.5-minigui源码

   case 2:
   case GL_LUMINANCE_ALPHA:
   case GL_LUMINANCE4_ALPHA4:
   case GL_LUMINANCE6_ALPHA2:
   case GL_LUMINANCE8_ALPHA8:
   case GL_LUMINANCE12_ALPHA4:
   case GL_LUMINANCE12_ALPHA12:
   case GL_LUMINANCE16_ALPHA16:
   case GL_COMPRESSED_LUMINANCE_ALPHA:
      return _dri_texformat_al88;

   case GL_INTENSITY:
   case GL_INTENSITY4:
   case GL_INTENSITY8:
   case GL_INTENSITY12:
   case GL_INTENSITY16:
   case GL_COMPRESSED_INTENSITY:
       return _dri_texformat_i8;

   case GL_YCBCR_MESA:
      if (type == GL_UNSIGNED_SHORT_8_8_APPLE ||
          type == GL_UNSIGNED_BYTE)
         return &_mesa_texformat_ycbcr;
      else
         return &_mesa_texformat_ycbcr_rev;

   case GL_RGB_S3TC:
   case GL_RGB4_S3TC:
   case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
      return &_mesa_texformat_rgb_dxt1;

   case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
      return &_mesa_texformat_rgba_dxt1;

   case GL_RGBA_S3TC:
   case GL_RGBA4_S3TC:
   case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
      return &_mesa_texformat_rgba_dxt3;

   case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
      return &_mesa_texformat_rgba_dxt5;

   default:
      _mesa_problem(ctx,
         "unexpected internalFormat 0x%x in r200ChooseTextureFormat",
         (int) internalFormat);
      return NULL;
   }

   return NULL; /* never get here */
}


static GLboolean
r200ValidateClientStorage( GLcontext *ctx, GLenum target,
			   GLint internalFormat,
			   GLint srcWidth, GLint srcHeight, 
                           GLenum format, GLenum type,  const void *pixels,
			   const struct gl_pixelstore_attrib *packing,
			   struct gl_texture_object *texObj,
			   struct gl_texture_image *texImage)

{
   r200ContextPtr rmesa = R200_CONTEXT(ctx);

   if (0)
      fprintf(stderr, "intformat %s format %s type %s\n",
	      _mesa_lookup_enum_by_nr( internalFormat ),
	      _mesa_lookup_enum_by_nr( format ),
	      _mesa_lookup_enum_by_nr( type ));

   if (!ctx->Unpack.ClientStorage)
      return 0;

   if (ctx->_ImageTransferState ||
       texImage->IsCompressed ||
       texObj->GenerateMipmap)
      return 0;


   /* This list is incomplete, may be different on ppc???
    */
   switch ( internalFormat ) {
   case GL_RGBA:
      if ( format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV ) {
	 texImage->TexFormat = _dri_texformat_argb8888;
      }
      else
	 return 0;
      break;

   case GL_RGB:
      if ( format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5 ) {
	 texImage->TexFormat = _dri_texformat_rgb565;
      }
      else
	 return 0;
      break;

   case GL_YCBCR_MESA:
      if ( format == GL_YCBCR_MESA && 
	   type == GL_UNSIGNED_SHORT_8_8_REV_APPLE ) {
	 texImage->TexFormat = &_mesa_texformat_ycbcr_rev;
      }
      else if ( format == GL_YCBCR_MESA && 
		(type == GL_UNSIGNED_SHORT_8_8_APPLE || 
		 type == GL_UNSIGNED_BYTE)) {
	 texImage->TexFormat = &_mesa_texformat_ycbcr;
      }
      else
	 return 0;
      break;

   default:
      return 0;
   }

   /* Could deal with these packing issues, but currently don't:
    */
   if (packing->SkipPixels || 
       packing->SkipRows || 
       packing->SwapBytes ||
       packing->LsbFirst) {
      return 0;
   }

   {      
      GLint srcRowStride = _mesa_image_row_stride(packing, srcWidth,
						  format, type);

      
      if (0)
	 fprintf(stderr, "%s: srcRowStride %d/%x\n", 
		 __FUNCTION__, srcRowStride, srcRowStride);

      /* Could check this later in upload, pitch restrictions could be
       * relaxed, but would need to store the image pitch somewhere,
       * as packing details might change before image is uploaded:
       */
      if (!r200IsGartMemory( rmesa, pixels, srcHeight * srcRowStride ) ||
	  (srcRowStride & 63))
	 return 0;


      /* Have validated that _mesa_transfer_teximage would be a straight
       * memcpy at this point.  NOTE: future calls to TexSubImage will
       * overwrite the client data.  This is explicitly mentioned in the
       * extension spec.
       */
      texImage->Data = (void *)pixels;
      texImage->IsClientData = GL_TRUE;
      texImage->RowStride = srcRowStride / texImage->TexFormat->TexelBytes;

      return 1;
   }
}


static void r200TexImage1D( GLcontext *ctx, GLenum target, GLint level,
                              GLint internalFormat,
                              GLint width, GLint border,
                              GLenum format, GLenum type, const GLvoid *pixels,
                              const struct gl_pixelstore_attrib *packing,
                              struct gl_texture_object *texObj,
                              struct gl_texture_image *texImage )
{
   driTextureObject * t = (driTextureObject *) texObj->DriverData;

   if ( t ) {
      driSwapOutTextureObject( t );
   }
   else {
      t = (driTextureObject *) r200AllocTexObj( texObj );
      if (!t) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D");
         return;
      }
   }

   /* Note, this will call ChooseTextureFormat */
   _mesa_store_teximage1d(ctx, target, level, internalFormat,
                          width, border, format, type, pixels,
                          &ctx->Unpack, texObj, texImage);

   t->dirty_images[0] |= (1 << level);
}


static void r200TexSubImage1D( GLcontext *ctx, GLenum target, GLint level,
                                 GLint xoffset,
                                 GLsizei width,
                                 GLenum format, GLenum type,
                                 const GLvoid *pixels,
                                 const struct gl_pixelstore_attrib *packing,
                                 struct gl_texture_object *texObj,
                                 struct gl_texture_image *texImage )
{
   driTextureObject * t = (driTextureObject *) texObj->DriverData;

   assert( t ); /* this _should_ be true */
   if ( t ) {
      driSwapOutTextureObject( t );
   }
   else {
      t = (driTextureObject *) r200AllocTexObj( texObj );
      if (!t) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage1D");
         return;
      }
   }

   _mesa_store_texsubimage1d(ctx, target, level, xoffset, width,
			     format, type, pixels, packing, texObj,
			     texImage);

   t->dirty_images[0] |= (1 << level);
}


static void r200TexImage2D( GLcontext *ctx, GLenum target, GLint level,
                              GLint internalFormat,
                              GLint width, GLint height, GLint border,
                              GLenum format, GLenum type, const GLvoid *pixels,
                              const struct gl_pixelstore_attrib *packing,
                              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;
   }

   if ( t != NULL ) {
      driSwapOutTextureObject( t );
   }
   else {
      t = (driTextureObject *) r200AllocTexObj( texObj );
      if (!t) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
         return;
      }
   }

   texImage->IsClientData = GL_FALSE;

   if (r200ValidateClientStorage( ctx, target, 
				  internalFormat, 
				  width, height, 
				  format, type, pixels, 
				  packing, texObj, texImage)) {
      if (R200_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, "%s: Using client storage\n", __FUNCTION__); 
   }
   else {
      if (R200_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, "%s: Using normal storage\n", __FUNCTION__); 

      /* Normal path: copy (to cached memory) and eventually upload
       * via another copy to GART memory and then a blit...  Could
       * eliminate one copy by going straight to (permanent) GART.
       *
       * Note, this will call r200ChooseTextureFormat.
       */
      _mesa_store_teximage2d(ctx, target, level, internalFormat,
			     width, height, border, format, type, pixels,
			     &ctx->Unpack, texObj, texImage);
      
      t->dirty_images[face] |= (1 << level);
   }
}


static void r200TexSubImage2D( GLcontext *ctx, GLenum target, GLint level,
                                 GLint xoffset, GLint yoffset,
                                 GLsizei width, GLsizei height,
                                 GLenum format, GLenum type,
                                 const GLvoid *pixels,
                                 const struct gl_pixelstore_attrib *packing,
                                 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 */
   if ( t ) {
      driSwapOutTextureObject( t );
   }
   else {
      t = (driTextureObject *) r200AllocTexObj( texObj );
      if (!t) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage2D");
         return;
      }
   }

   _mesa_store_texsubimage2d(ctx, target, level, xoffset, yoffset, width,
			     height, format, type, pixels, packing, texObj,
			     texImage);

   t->dirty_images[face] |= (1 << level);
}


static void r200CompressedTexImage2D( 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;
   }

   if ( t != NULL ) {
      driSwapOutTextureObject( t );
   }
   else {
      t = (driTextureObject *) r200AllocTexObj( texObj );
      if (!t) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2D");
         return;
      }
   }

   texImage->IsClientData = GL_FALSE;
/* can't call this, different parameters. Would never evaluate to true anyway currently
   if (r200ValidateClientStorage( ctx, target, 
				  internalFormat,
				  width, height,
				  format, type, pixels,
				  packing, texObj, texImage)) {
      if (R200_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, "%s: Using client storage\n", __FUNCTION__);
   }
   else */{
      if (R200_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, "%s: Using normal storage\n", __FUNCTION__);

      /* Normal path: copy (to cached memory) and eventually upload
       * via another copy to GART memory and then a blit...  Could
       * eliminate one copy by going straight to (permanent) GART.
       *
       * Note, this will call r200ChooseTextureFormat.
       */
      _mesa_store_compressed_teximage2d(ctx, target, level, internalFormat, width,
                                 height, border, imageSize, data, texObj, texImage);

      t->dirty_images[face] |= (1 << level);
   }
}