mesa: add ff fragment shader support for geom and tess shaders

This is required for compatibility profile support.

Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Iago Toral Quiroga <[email protected]>

1 files changed, 5 insertions, 1 deletions

diff --git a/src/mesa/main/ff_fragment_shader.cpp b/src/mesa/main/ff_fragment_shader.cpp
index a698931d99e..935a21624af 100644
--- a/src/mesa/main/ff_fragment_shader.cpp
+++ b/src/mesa/main/ff_fragment_shader.cpp
@@ -229,7 +229,11 @@ static GLbitfield filter_fp_input_mask( GLbitfield fp_inputs,
     * since vertex shader state validation comes after fragment state
     * validation (see additional comments in state.c).
     */
-   if (vertexShader)
+   if (ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY] != NULL)
+      vprog = ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
+   else if (ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL] != NULL)
+      vprog = ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
+   else if (vertexShader)
       vprog = ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
    else
       vprog = ctx->VertexProgram.Current;