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mesa: Expose GLSL interpolation qualifiers in gl_fragment_program.

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This patch makes GLSL interpolation qualifiers visible to drivers via
the array InterpQualifier[] in gl_fragment_program, so that they can
easily be used by driver back-ends to select the correct interpolation
mode.

Previous to this patch, the GLSL compiler was using the enum
ir_variable_interpolation to represent interpolation types.  Rather
than make a duplicate enum in core mesa to represent the same thing, I
moved the enum into mtypes.h and renamed it to be more consistent with
the other enums defined there.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Paul Berry
2011-10-25 18:06:37 -07:00
parent 0fbc8d301b
commit cf45949d6a
8 changed files with 69 additions and 33 deletions
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6
src/glsl/ir_reader.cpp
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@@ -405,11 +405,11 @@ ir_reader::read_declaration(s_expression *expr)
} else if (strcmp(qualifier->value(), "inout") == 0) {
var->mode = ir_var_inout;
} else if (strcmp(qualifier->value(), "smooth") == 0) {
var->interpolation = ir_var_smooth;
var->interpolation = INTERP_QUALIFIER_SMOOTH;
} else if (strcmp(qualifier->value(), "flat") == 0) {
var->interpolation = ir_var_flat;
var->interpolation = INTERP_QUALIFIER_FLAT;
} else if (strcmp(qualifier->value(), "noperspective") == 0) {
var->interpolation = ir_var_noperspective;
var->interpolation = INTERP_QUALIFIER_NOPERSPECTIVE;
} else {
ir_read_error(expr, "unknown qualifier: %s", qualifier->value());
return NULL;