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path: root/mesalib/src/glsl/linker.cpp
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-rw-r--r--mesalib/src/glsl/linker.cpp14
1 files changed, 14 insertions, 0 deletions
diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp
index c7fb62437..46cd1950c 100644
--- a/mesalib/src/glsl/linker.cpp
+++ b/mesalib/src/glsl/linker.cpp
@@ -1682,6 +1682,20 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
demote_shader_inputs_and_outputs(sh, ir_var_in);
}
+ /* OpenGL ES requires that a vertex shader and a fragment shader both be
+ * present in a linked program. By checking for use of shading language
+ * version 1.00, we also catch the GL_ARB_ES2_compatibility case.
+ */
+ if (ctx->API == API_OPENGLES2 || prog->Version == 100) {
+ if (prog->_LinkedShaders[MESA_SHADER_VERTEX] == NULL) {
+ linker_error_printf(prog, "program lacks a vertex shader\n");
+ prog->LinkStatus = false;
+ } else if (prog->_LinkedShaders[MESA_SHADER_FRAGMENT] == NULL) {
+ linker_error_printf(prog, "program lacks a fragment shader\n");
+ prog->LinkStatus = false;
+ }
+ }
+
/* FINISHME: Assign fragment shader output locations. */
done: