diff options
| -rw-r--r-- | src/mesa/main/api_validate.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mesa/main/api_validate.c b/src/mesa/main/api_validate.c index e7c439c431a..1e8a714067b 100644 --- a/src/mesa/main/api_validate.c +++ b/src/mesa/main/api_validate.c @@ -264,6 +264,20 @@ check_valid_to_render(struct gl_context *ctx, const char *function) switch (ctx->API) { case API_OPENGLES2: + /* Section 11.2 (Tessellation) of the ES 3.2 spec says: + * + * "An INVALID_OPERATION error is generated by any command that + * transfers vertices to the GL if the current program state has + * one but not both of a tessellation control shader and tessellation + * evaluation shader." + */ + if (_mesa_is_gles3(ctx) && + ctx->TessEvalProgram._Current && !ctx->TessCtrlProgram._Current) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(tess ctrl shader is missing)", function); + return false; + } + /* For ES2, we can draw if we have a vertex program/shader). */ return ctx->VertexProgram._Current != NULL; |