diff options
| author | Brian Paul <brianp@vmware.com> | 2009-06-12 16:21:20 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-06-12 16:21:20 -0600 |
| commit | 18af7c384cf663533f210d95d074c244d4214f29 (patch) | |
| tree | 19bebbe3ff280eebfd68f7fadeb3aa77b3841a68 /src/mesa/drivers/dri/i965/brw_sf_emit.c | |
| parent | 05f0d90962147ad61050bbcde42775a3422e68a5 (diff) | |
i965: interpolate colors with perspective correction by default
...rather than with linear interpolation. Modern hardware should use
perspective-corrected interpolation for colors (as for texcoords).
glHint(GL_PERSPECTIVE_CORRECTION_HINT, mode) can be used to get
linear interpolation if mode = GL_FASTEST.
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_sf_emit.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_sf_emit.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_sf_emit.c b/src/mesa/drivers/dri/i965/brw_sf_emit.c index 862835f157..2f63610425 100644 --- a/src/mesa/drivers/dri/i965/brw_sf_emit.c +++ b/src/mesa/drivers/dri/i965/brw_sf_emit.c @@ -295,9 +295,6 @@ static void invert_det( struct brw_sf_compile *c) } -#define NON_PERPECTIVE_ATTRS (FRAG_BIT_WPOS | \ - FRAG_BIT_COL0 | \ - FRAG_BIT_COL1) static GLboolean calculate_masks( struct brw_sf_compile *c, GLuint reg, @@ -306,9 +303,16 @@ static GLboolean calculate_masks( struct brw_sf_compile *c, GLushort *pc_linear) { GLboolean is_last_attr = (reg == c->nr_setup_regs - 1); - GLuint persp_mask = c->key.attrs & ~NON_PERPECTIVE_ATTRS; + GLuint persp_mask; GLuint linear_mask; + if (c->key.do_flat_shading || c->key.linear_color) + persp_mask = c->key.attrs & ~(FRAG_BIT_WPOS | + FRAG_BIT_COL0 | + FRAG_BIT_COL1); + else + persp_mask = c->key.attrs & ~(FRAG_BIT_WPOS); + if (c->key.do_flat_shading) linear_mask = c->key.attrs & ~(FRAG_BIT_COL0|FRAG_BIT_COL1); else |