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gallium: introduce GLSL based interpolation rules. (v2)

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This introduces an unspecified interpolation paramter that is only allowed for
color semantics, so a specified GLSL interpolation will override the ShadeModel
specified interpolation, but not vice-versa.

This fixes a lot of the interpolation tests in piglit.

v2: rename from unspecified to color

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2012-01-09 15:57:02 +00:00
parent 5a7c343352
commit 67e3cbf163
7 changed files with 19 additions and 6 deletions
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src/gallium/include/pipe/p_shader_tokens.h
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@@ -100,7 +100,8 @@ enum tgsi_file_type {
#define TGSI_INTERPOLATE_CONSTANT 0
#define TGSI_INTERPOLATE_LINEAR 1
#define TGSI_INTERPOLATE_PERSPECTIVE 2
#define TGSI_INTERPOLATE_COUNT 3
#define TGSI_INTERPOLATE_COLOR 3 /* special color case for smooth/flat */
#define TGSI_INTERPOLATE_COUNT 4
#define TGSI_CYLINDRICAL_WRAP_X (1 << 0)
#define TGSI_CYLINDRICAL_WRAP_Y (1 << 1)