glsl: check number of varying variables against the limit
Link fails if too many varying vars.
(cherry picked from master, commit cc58fbcf2c5c88f406818db60910f537e03610d6)
diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c
index 8c9fe1e..387659f 100644
--- a/src/mesa/shader/slang/slang_link.c
+++ b/src/mesa/shader/slang/slang_link.c
@@ -97,7 +97,8 @@
* which inputs are centroid-sampled, invariant, etc.
*/
static GLboolean
-link_varying_vars(struct gl_shader_program *shProg, struct gl_program *prog)
+link_varying_vars(GLcontext *ctx,
+ struct gl_shader_program *shProg, struct gl_program *prog)
{
GLuint *map, i, firstVarying, newFile;
GLbitfield *inOutFlags;
@@ -156,8 +157,12 @@
var->Flags);
}
+ if (shProg->Varying->NumParameters > ctx->Const.MaxVarying) {
+ link_error(shProg, "Too many varying variables");
+ return GL_FALSE;
+ }
+
/* Map varying[i] to varying[j].
- * Plus, set prog->Input/OutputFlags[] as described above.
* Note: the loop here takes care of arrays or large (sz>4) vars.
*/
{
@@ -725,11 +730,11 @@
/* link varying vars */
if (shProg->VertexProgram) {
- if (!link_varying_vars(shProg, &shProg->VertexProgram->Base))
+ if (!link_varying_vars(ctx, shProg, &shProg->VertexProgram->Base))
return;
}
if (shProg->FragmentProgram) {
- if (!link_varying_vars(shProg, &shProg->FragmentProgram->Base))
+ if (!link_varying_vars(ctx, shProg, &shProg->FragmentProgram->Base))
return;
}