diff options
| author | Ian Romanick <idr@freedesktop.org> | 2009-01-09 15:43:17 -0800 |
|---|---|---|
| committer | Ian Romanick <ian.d.romanick@intel.com> | 2009-01-23 09:49:29 -0800 |
| commit | dde7cb962860e72e1bf3175069767358cc5b3f3c (patch) | |
| tree | 64ca81d4f544ae7f28618c919af58a844f246de9 /src/mesa/drivers/dri/r300/r300_render.c | |
| parent | af0e6336e9d7dc19d74950ce13b33e1fa1b2081d (diff) | |
Track two sets of back-face stencil state
Track separate back-face stencil state for OpenGL 2.0 /
GL_ATI_separate_stencil and GL_EXT_stencil_two_side. This allows all
three to be enabled in a driver. One set of state is set via the 2.0
or ATI functions and is used when STENCIL_TEST_TWO_SIDE_EXT is
disabled. The other is set by StencilFunc and StencilOp when the
active stencil face is set to BACK. The GL_EXT_stencil_two_side spec has
more details.
http://opengl.org/registry/specs/EXT/stencil_two_side.txt
Diffstat (limited to 'src/mesa/drivers/dri/r300/r300_render.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_render.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_render.c b/src/mesa/drivers/dri/r300/r300_render.c index f9266e44c1..16ce4a1199 100644 --- a/src/mesa/drivers/dri/r300/r300_render.c +++ b/src/mesa/drivers/dri/r300/r300_render.c @@ -347,6 +347,8 @@ static GLboolean r300RunRender(GLcontext * ctx, static int r300Fallback(GLcontext * ctx) { r300ContextPtr r300 = R300_CONTEXT(ctx); + const unsigned back = ctx->Stencil._BackFace; + /* Do we need to use new-style shaders? * Also is there a better way to do this? */ if (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515) { @@ -371,12 +373,14 @@ static int r300Fallback(GLcontext * ctx) FALLBACK_IF(ctx->RenderMode != GL_RENDER); - FALLBACK_IF(ctx->Stencil._TestTwoSide - && (ctx->Stencil.Ref[0] != ctx->Stencil.Ref[1] - || ctx->Stencil.ValueMask[0] != - ctx->Stencil.ValueMask[1] - || ctx->Stencil.WriteMask[0] != - ctx->Stencil.WriteMask[1])); + /* If GL_EXT_stencil_two_side is disabled, this fallback check can + * be removed. + */ + FALLBACK_IF(ctx->Stencil.Ref[0] != ctx->Stencil.Ref[back] + || ctx->Stencil.ValueMask[0] != + ctx->Stencil.ValueMask[back] + || ctx->Stencil.WriteMask[0] != + ctx->Stencil.WriteMask[back]); if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) FALLBACK_IF(ctx->Point.PointSprite); |