r300_tex.c

mesa-6.5-minigui源码

	case GL_ALPHA8:
	case GL_ALPHA12:
	case GL_ALPHA16:
	case GL_COMPRESSED_ALPHA:
		return _dri_texformat_a8;

	case 1:
	case GL_LUMINANCE:
	case GL_LUMINANCE4:
	case GL_LUMINANCE8:
	case GL_LUMINANCE12:
	case GL_LUMINANCE16:
	case GL_COMPRESSED_LUMINANCE:
		return _dri_texformat_l8;

	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;
	  
 	case GL_ALPHA16F_ARB:
	  return &_mesa_texformat_alpha_float16;
	case GL_ALPHA32F_ARB:
	  return &_mesa_texformat_alpha_float32;
	case GL_LUMINANCE16F_ARB:
	  return &_mesa_texformat_luminance_float16;
	case GL_LUMINANCE32F_ARB:
	  return &_mesa_texformat_luminance_float32;
	case GL_LUMINANCE_ALPHA16F_ARB:
	  return &_mesa_texformat_luminance_alpha_float16;
	case GL_LUMINANCE_ALPHA32F_ARB:
	  return &_mesa_texformat_luminance_alpha_float32;
	case GL_INTENSITY16F_ARB:
	  return &_mesa_texformat_intensity_float16;
	case GL_INTENSITY32F_ARB:
	  return &_mesa_texformat_intensity_float32;
	case GL_RGB16F_ARB:
	  return &_mesa_texformat_rgba_float16;
	case GL_RGB32F_ARB:
	  return &_mesa_texformat_rgba_float32;
	case GL_RGBA16F_ARB:
	  return &_mesa_texformat_rgba_float16;
	case GL_RGBA32F_ARB:
	  return &_mesa_texformat_rgba_float32;

	default:
		_mesa_problem(ctx,
			      "unexpected internalFormat 0x%x in r300ChooseTextureFormat",
			      (int)internalFormat);
		return NULL;
	}

	return NULL;		/* never get here */
}

static GLboolean
r300ValidateClientStorage(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)
{
	r300ContextPtr rmesa = R300_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 (!r300IsGartMemory(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 r300TexImage1D(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 *) r300AllocTexObj(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 r300TexSubImage1D(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 *) r300AllocTexObj(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 r300TexImage2D(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 *) r300AllocTexObj(texObj);
		if (!t) {
			_mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
			return;
		}
	}

	texImage->IsClientData = GL_FALSE;

	if (r300ValidateClientStorage(ctx, target,
				      internalFormat,
				      width, height,
				      format, type, pixels,
				      packing, texObj, texImage)) {
		if (RADEON_DEBUG & DEBUG_TEXTURE)
			fprintf(stderr, "%s: Using client storage\n",
				__FUNCTION__);
	} else {
		if (RADEON_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 r300ChooseTextureFormat.
		 */
		_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 r300TexSubImage2D(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 *) r300AllocTexObj(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 r300CompressedTexImage2D( 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 *) r300AllocTexObj( texObj );
      if (!t) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2D");