[Mesa-dev] [PATCH 2/4] mesa: Add helper function _mesa_is_alpha_test_enabled()

[Anuj Phogat]

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/main/framebuffer.c | 7 +++++++
 src/mesa/main/framebuffer.h | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index e1505fa..f19f3af 100644
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -1005,3 +1005,10 @@ _mesa_is_multisample_enabled(const struct gl_context *ctx)
           ctx->DrawBuffer &&
           _mesa_geometric_nonvalidated_samples(ctx->DrawBuffer) > 1;
 }
+
+bool
+_mesa_is_alpha_test_enabled(const struct gl_context *ctx)
+{
+   bool buffer0_is_integer = ctx->DrawBuffer->_IntegerBuffers & 0x1;
+   return (ctx->Color.AlphaEnabled && !buffer0_is_integer);
+}
diff --git a/src/mesa/main/framebuffer.h b/src/mesa/main/framebuffer.h
index 384f749..a6adb1c 100644
--- a/src/mesa/main/framebuffer.h
+++ b/src/mesa/main/framebuffer.h
@@ -149,4 +149,7 @@ _mesa_is_front_buffer_drawing(const struct gl_framebuffer *fb);
 extern bool
 _mesa_is_multisample_enabled(const struct gl_context *ctx);
 
+extern bool
+_mesa_is_alpha_test_enabled(const struct gl_context *ctx);
+
 #endif /* FRAMEBUFFER_H */
-- 
2.5.5