diff options
Diffstat (limited to 'src/mesa/main/blend.c')
| -rw-r--r-- | src/mesa/main/blend.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/mesa/main/blend.c b/src/mesa/main/blend.c index 15b0dc759cd..906ff3efdfb 100644 --- a/src/mesa/main/blend.c +++ b/src/mesa/main/blend.c @@ -767,10 +767,12 @@ _mesa_ClampColor(GLenum target, GLenum clamp) case GL_CLAMP_VERTEX_COLOR_ARB: FLUSH_VERTICES(ctx, _NEW_LIGHT); ctx->Light.ClampVertexColor = clamp; + _mesa_update_clamp_vertex_color(ctx); break; case GL_CLAMP_FRAGMENT_COLOR_ARB: FLUSH_VERTICES(ctx, _NEW_FRAG_CLAMP); ctx->Color.ClampFragmentColor = clamp; + _mesa_update_clamp_fragment_color(ctx); break; case GL_CLAMP_READ_COLOR_ARB: FLUSH_VERTICES(ctx, _NEW_COLOR); @@ -814,6 +816,34 @@ _mesa_get_clamp_read_color(const struct gl_context *ctx) return get_clamp_color(ctx->ReadBuffer, ctx->Color.ClampReadColor); } +/** + * Update the ctx->Color._ClampFragmentColor field + */ +void +_mesa_update_clamp_fragment_color(struct gl_context *ctx) +{ + struct gl_framebuffer *fb = ctx->DrawBuffer; + + /* Don't clamp if: + * - there is no colorbuffer + * - all colorbuffers are unsigned normalized, so clamping has no effect + * - there is an integer colorbuffer + */ + if (!fb || !fb->_HasSNormOrFloatColorBuffer || fb->_IntegerColor) + ctx->Color._ClampFragmentColor = GL_FALSE; + else + ctx->Color._ClampFragmentColor = _mesa_get_clamp_fragment_color(ctx); +} + +/** + * Update the ctx->Color._ClampVertexColor field + */ +void +_mesa_update_clamp_vertex_color(struct gl_context *ctx) +{ + ctx->Light._ClampVertexColor = _mesa_get_clamp_vertex_color(ctx); +} + /**********************************************************************/ /** \name Initialization */ |