[Mesa-dev] [PATCH 3/5] glsl: Update a comment about link errors for TCS && !TES.
kenneth at whitecape.org
Sat Feb 11 07:52:42 UTC 2017
OpenGL ES actually has spec text to prohibit this. It's just OpenGL
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
src/compiler/glsl/linker.cpp | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp
index 720c22baee0..4c7bf282ce1 100644
@@ -4721,7 +4721,15 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
- /* The spec is self-contradictory here. It allows linking without a tess
+ /* Section 7.3 of the OpenGL ES 3.2 specification says:
+ * "Linking can fail for [...] any of the following reasons:
+ * * program contains an object to form a tessellation control
+ * shader [...] and [...] the program is not separable and
+ * contains no object to form a tessellation evaluation shader"
+ * The OpenGL spec is contradictory. It allows linking without a tess
* eval shader, but that can only be used with transform feedback and
* rasterization disabled. However, transform feedback isn't allowed
* with GL_PATCHES, so it can't be used.
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