From: Fabian Bieler <fabianbie...@fastmail.fm>
>From section 2.15 (Geometry Shaders) the OpenGL 3.2 spec:
A program object that includes a geometry shader must also include
a vertex shader; otherwise a link error will occur.
Reviewed-by: Paul Berry <stereotype...@gmail.com>
---
src/glsl/linker.cpp | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index d43d0f2..0c8449e 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -1804,6 +1804,14 @@ link_shaders(struct gl_context *ctx, struct
gl_shader_program *prog)
prog->Version = max_version;
prog->IsES = is_es_prog;
+ /* Geometry shaders have to be linked with vertex shaders.
+ */
+ if (num_geom_shaders > 0 && num_vert_shaders == 0) {
+ linker_error(prog, "Geometry shader must be linked with "
+ "vertex shader\n");
+ goto done;
+ }
+
for (unsigned int i = 0; i < MESA_SHADER_TYPES; i++) {
if (prog->_LinkedShaders[i] != NULL)
ctx->Driver.DeleteShader(ctx, prog->_LinkedShaders[i]);
--
1.8.3.4
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