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i965/fs: use determine_interpolation_mode().

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This patch changes how fs_visitor::emit_general_interpolation()
decides what kind of interpolation to do.  Previously, it used the
shade model to determine how to interpolate colors, and used smooth
interpolation on everything else.  Now it uses
ir_variable::determine_interpolation_mode(), so that it respects GLSL
1.30 interpolation qualifiers.

Fixes piglit tests interpolation-flat-*-smooth-{distance,fixed,vertex}
and interpolation-flat-other-flat-{distance,fixed,vertex}.

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Paul Berry 2011-10-21 07:56:08 -07:00
parent e04bdeae82
commit f8386a29f0
1 changed files with 4 additions and 4 deletions
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8
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -442,6 +442,9 @@ fs_visitor::emit_general_interpolation(ir_variable *ir)
type = ir->type;
}
glsl_interp_qualifier interpolation_mode =
ir->determine_interpolation_mode(c->key.flat_shade);
int location = ir->location;
for (unsigned int i = 0; i < array_elements; i++) {
for (unsigned int j = 0; j < type->matrix_columns; j++) {
@ -454,10 +457,7 @@ fs_visitor::emit_general_interpolation(ir_variable *ir)
continue;
}
bool is_gl_Color =
location == FRAG_ATTRIB_COL0 || location == FRAG_ATTRIB_COL1;
if (c->key.flat_shade && is_gl_Color) {
if (interpolation_mode == INTERP_QUALIFIER_FLAT) {
/* Constant interpolation (flat shading) case. The SF has
* handed us defined values in only the constant offset
* field of the setup reg.