diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_pixel.c')
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_pixel.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_pixel.c b/src/mesa/drivers/dri/intel/intel_pixel.c index 72eb823bc4..6417866b20 100644 --- a/src/mesa/drivers/dri/intel/intel_pixel.c +++ b/src/mesa/drivers/dri/intel/intel_pixel.c @@ -35,12 +35,25 @@ #define FILE_DEBUG_FLAG DEBUG_PIXEL +static GLenum +effective_func(GLenum func, GLboolean src_alpha_is_one) +{ + if (src_alpha_is_one) { + if (func == GL_SRC_ALPHA) + return GL_ONE; + if (func == GL_ONE_MINUS_SRC_ALPHA) + return GL_ZERO; + } + + return func; +} + /** * Check if any fragment operations are in effect which might effect * glDraw/CopyPixels. */ GLboolean -intel_check_blit_fragment_ops(GLcontext * ctx) +intel_check_blit_fragment_ops(GLcontext * ctx, GLboolean src_alpha_is_one) { if (ctx->NewState) _mesa_update_state(ctx); @@ -50,7 +63,13 @@ intel_check_blit_fragment_ops(GLcontext * ctx) return GL_FALSE; } - if (ctx->Color.BlendEnabled) { + if (ctx->Color.BlendEnabled && + (effective_func(ctx->Color.BlendSrcRGB, src_alpha_is_one) != GL_ONE || + effective_func(ctx->Color.BlendDstRGB, src_alpha_is_one) != GL_ZERO || + ctx->Color.BlendEquationRGB != GL_FUNC_ADD || + effective_func(ctx->Color.BlendSrcA, src_alpha_is_one) != GL_ONE || + effective_func(ctx->Color.BlendDstA, src_alpha_is_one) != GL_ZERO || + ctx->Color.BlendEquationA != GL_FUNC_ADD)) { DBG("fallback due to blend\n"); return GL_FALSE; } |