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authorKenneth Graunke <[email protected]>2017-02-10 20:56:38 -0800
committerKenneth Graunke <[email protected]>2017-02-12 21:09:21 -0800
commite99df398f1ee5aee12a8fc1bc52199df1d0f260a (patch)
tree6d7d479113a832cf4dec25397ee471bca7e2dace /src/compiler/glsl
parent365afbdaef8f47bf8a434defcf3eed2b5bdfb4ce (diff)
glsl: Update a comment about link errors for TCS && !TES.
OpenGL ES actually has spec text to prohibit this. It's just OpenGL that's confusing. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Alejandro PiƱeiro <[email protected]>
Diffstat (limited to 'src/compiler/glsl')
-rw-r--r--src/compiler/glsl/linker.cpp10
1 files changed, 9 insertions, 1 deletions
diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp
index 720c22baee0..4c7bf282ce1 100644
--- a/src/compiler/glsl/linker.cpp
+++ b/src/compiler/glsl/linker.cpp
@@ -4721,7 +4721,15 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
goto done;
}
- /* 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.