Module: Mesa Branch: master Commit: 6b60153f042c1191ae8fde3fbfc7d861650287aa URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=6b60153f042c1191ae8fde3fbfc7d861650287aa
Author: Brian Paul <[email protected]> Date: Thu Apr 27 08:52:30 2017 -0600 mesa: optimize color_buffer_writes_enabled() Return as soon as we find an existing color channel that's enabled for writing. Typically, this allows us to return true on the first loop iteration intead of doing four iterations. No piglit regressions. Reviewed-by: Marek Olšák <[email protected]> --- src/mesa/main/clear.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/src/mesa/main/clear.c b/src/mesa/main/clear.c index a1bb36efe2..884cf986c7 100644 --- a/src/mesa/main/clear.c +++ b/src/mesa/main/clear.c @@ -115,16 +115,17 @@ color_buffer_writes_enabled(const struct gl_context *ctx, unsigned idx) { struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[idx]; GLuint c; - GLubyte colorMask = 0; if (rb) { for (c = 0; c < 4; c++) { - if (_mesa_format_has_color_component(rb->Format, c)) - colorMask |= ctx->Color.ColorMask[idx][c]; + if (ctx->Color.ColorMask[idx][c] && + _mesa_format_has_color_component(rb->Format, c)) { + return true; + } } } - return colorMask != 0; + return false; } _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
