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-rw-r--r--src/mesa/drivers/dri/i965/brw_fs.cpp9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index c2fa06b38ab..53388224144 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -3586,14 +3586,15 @@ brw_fs_precompile(struct gl_context *ctx, struct gl_shader_program *prog)
key.drawable_height = ctx->DrawBuffer->Height;
}
- if ((fp->Base.InputsRead & VARYING_BIT_POS) || program_uses_dfdy) {
- key.render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
- }
-
key.nr_color_regions = _mesa_bitcount_64(fp->Base.OutputsWritten &
~(BITFIELD64_BIT(FRAG_RESULT_DEPTH) |
BITFIELD64_BIT(FRAG_RESULT_SAMPLE_MASK)));
+ if ((fp->Base.InputsRead & VARYING_BIT_POS) || program_uses_dfdy) {
+ key.render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer) ||
+ key.nr_color_regions > 1;
+ }
+
/* GL_FRAGMENT_SHADER_DERIVATIVE_HINT is almost always GL_DONT_CARE. The
* quality of the derivatives is likely to be determined by the driconf
* option.