return false;
}
+ /* The ARB_copy_image specification says:
+ *
+ * "INVALID_OPERATION is generated if either object is a texture and
+ * the texture is not complete (as defined in section 3.9.14)"
+ *
+ * The cited section says:
+ *
+ * "Using the preceding definitions, a texture is complete unless any
+ * of the following conditions hold true: [...]
+ *
+ * * The minification filter requires a mipmap (is neither NEAREST
+ * nor LINEAR), and the texture is not mipmap complete."
+ *
+ * This imposes the bizarre restriction that glCopyImageSubData requires
+ * mipmap completion based on the sampler minification filter, even
+ * though the call fundamentally ignores the sampler. Additionally, it
+ * doesn't work with texture units, so it can't consider any bound
+ * separate sampler objects. It appears that you're supposed to use
+ * the sampler object which is built-in to the texture object.
+ *
+ * dEQP and the Android CTS mandate this behavior, and the Khronos
+ * GL and ES working groups both affirmed that this is unfortunate but
+ * correct. See https://cvs.khronos.org/bugzilla/show_bug.cgi?id=16224.
+ *
+ * Integer textures with filtering cause another completeness snag:
+ *
+ * "Any of:
+ * – The internal format of the texture is integer (see table 8.12).
+ * – The internal format is STENCIL_INDEX.
+ * – The internal format is DEPTH_STENCIL, and the value of
+ * DEPTH_STENCIL_TEXTURE_MODE for the texture is STENCIL_INDEX.
+ * and either the magnification filter is not NEAREST, or the
+ * minification filter is neither NEAREST nor
+ * NEAREST_MIPMAP_NEAREST."
+ *
+ * However, applications in the wild (such as "Total War: WARHAMMER")
+ * appear to call glCopyImageSubData with integer textures and the
+ * default mipmap filters of GL_LINEAR and GL_NEAREST_MIPMAP_LINEAR,
+ * which would be considered incomplete, but expect this to work. In
+ * fact, until VK-GL-CTS commit fef80039ff875a51806b54d151c5f2d0c12da,
+ * the GL 4.5 CTS contained three tests which did the exact same thing
+ * by accident, and all conformant implementations allowed it.
+ *
+ * A proposal was made to amend the spec to say "is not complete (as
+ * defined in section <X>, but ignoring format-based completeness
+ * rules)" to allow this case. It makes some sense, given that
+ * glCopyImageSubData copies raw data without considering format.
+ * While the official edits have not yet been made, the OpenGL
+ * working group agreed with the idea of allowing this behavior.
+ *
+ * To ignore formats, we check texObj->_MipmapComplete directly
+ * rather than calling _mesa_is_texture_complete().
+ */
_mesa_test_texobj_completeness(ctx, texObj);
- if (!texObj->_BaseComplete ||
- (level != 0 && !texObj->_MipmapComplete)) {
+ const bool texture_complete_aside_from_formats =
+ _mesa_is_mipmap_filter(&texObj->Sampler) ? texObj->_MipmapComplete
+ : texObj->_BaseComplete;
+ if (!texture_complete_aside_from_formats) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyImageSubData(%sName incomplete)", dbg_prefix);
return false;
return false;
}
+static void
+copy_image_subdata(struct gl_context *ctx,
+ struct gl_texture_image *srcTexImage,
+ struct gl_renderbuffer *srcRenderbuffer,
+ int srcX, int srcY, int srcZ, int srcLevel,
+ struct gl_texture_image *dstTexImage,
+ struct gl_renderbuffer *dstRenderbuffer,
+ int dstX, int dstY, int dstZ, int dstLevel,
+ int srcWidth, int srcHeight, int srcDepth)
+{
+ /* loop over 2D slices/faces/layers */
+ for (int i = 0; i < srcDepth; ++i) {
+ int newSrcZ = srcZ + i;
+ int newDstZ = dstZ + i;
+
+ if (srcTexImage &&
+ srcTexImage->TexObject->Target == GL_TEXTURE_CUBE_MAP) {
+ /* need to update srcTexImage pointer for the cube face */
+ assert(srcZ + i < MAX_FACES);
+ srcTexImage = srcTexImage->TexObject->Image[srcZ + i][srcLevel];
+ assert(srcTexImage);
+ newSrcZ = 0;
+ }
+
+ if (dstTexImage &&
+ dstTexImage->TexObject->Target == GL_TEXTURE_CUBE_MAP) {
+ /* need to update dstTexImage pointer for the cube face */
+ assert(dstZ + i < MAX_FACES);
+ dstTexImage = dstTexImage->TexObject->Image[dstZ + i][dstLevel];
+ assert(dstTexImage);
+ newDstZ = 0;
+ }
+
+ ctx->Driver.CopyImageSubData(ctx,
+ srcTexImage, srcRenderbuffer,
+ srcX, srcY, newSrcZ,
+ dstTexImage, dstRenderbuffer,
+ dstX, dstY, newDstZ,
+ srcWidth, srcHeight);
+ }
+}
+
+void GLAPIENTRY
+_mesa_CopyImageSubData_no_error(GLuint srcName, GLenum srcTarget, GLint srcLevel,
+ GLint srcX, GLint srcY, GLint srcZ,
+ GLuint dstName, GLenum dstTarget, GLint dstLevel,
+ GLint dstX, GLint dstY, GLint dstZ,
+ GLsizei srcWidth, GLsizei srcHeight, GLsizei srcDepth)
+{
+ struct gl_texture_image *srcTexImage, *dstTexImage;
+ struct gl_renderbuffer *srcRenderbuffer, *dstRenderbuffer;
+
+ GET_CURRENT_CONTEXT(ctx);
+
+ prepare_target(ctx, srcName, srcTarget, srcLevel, srcZ, &srcTexImage,
+ &srcRenderbuffer);
+
+ prepare_target(ctx, dstName, dstTarget, dstLevel, dstZ, &dstTexImage,
+ &dstRenderbuffer);
+
+ copy_image_subdata(ctx, srcTexImage, srcRenderbuffer, srcX, srcY, srcZ,
+ srcLevel, dstTexImage, dstRenderbuffer, dstX, dstY, dstZ,
+ dstLevel, srcWidth, srcHeight, srcDepth);
+}
+
void GLAPIENTRY
_mesa_CopyImageSubData(GLuint srcName, GLenum srcTarget, GLint srcLevel,
GLint srcX, GLint srcY, GLint srcZ,
GLuint src_bw, src_bh, dst_bw, dst_bh;
GLuint src_num_samples, dst_num_samples;
int dstWidth, dstHeight, dstDepth;
- int i;
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glCopyImageSubData(%u, %s, %d, %d, %d, %d, "
return;
}
- /* loop over 2D slices/faces/layers */
- for (i = 0; i < srcDepth; ++i) {
- int newSrcZ = srcZ + i;
- int newDstZ = dstZ + i;
-
- if (srcTexImage &&
- srcTexImage->TexObject->Target == GL_TEXTURE_CUBE_MAP) {
- /* need to update srcTexImage pointer for the cube face */
- assert(srcZ + i < MAX_FACES);
- srcTexImage = srcTexImage->TexObject->Image[srcZ + i][srcLevel];
- assert(srcTexImage);
- newSrcZ = 0;
- }
-
- if (dstTexImage &&
- dstTexImage->TexObject->Target == GL_TEXTURE_CUBE_MAP) {
- /* need to update dstTexImage pointer for the cube face */
- assert(dstZ + i < MAX_FACES);
- dstTexImage = dstTexImage->TexObject->Image[dstZ + i][dstLevel];
- assert(dstTexImage);
- newDstZ = 0;
- }
-
- ctx->Driver.CopyImageSubData(ctx,
- srcTexImage, srcRenderbuffer,
- srcX, srcY, newSrcZ,
- dstTexImage, dstRenderbuffer,
- dstX, dstY, newDstZ,
- srcWidth, srcHeight);
- }
+ copy_image_subdata(ctx, srcTexImage, srcRenderbuffer, srcX, srcY, srcZ,
+ srcLevel, dstTexImage, dstRenderbuffer, dstX, dstY, dstZ,
+ dstLevel, srcWidth, srcHeight, srcDepth);
}
projects / mesa.git / blobdiff