mesa: implement core Mesa support for GL_ARB_draw_instanced

[mesa.git] / src / mesa / swrast / s_alpha.c

diff --git a/src/mesa/swrast/s_alpha.c b/src/mesa/swrast/s_alpha.c
index 5761bb00b4e55482205f321cb8e6cba47191474c..509477433a535f7a147558fe057e9e1274d59cd0 100644 (file)
--- a/src/mesa/swrast/s_alpha.c
+++ b/src/mesa/swrast/s_alpha.c
@@ -146,8 +146,8 @@ _swrast_alpha_test(const GLcontext *ctx, SWspan *span)
          ALPHA_TEST(FixedToInt(alpha), alpha += alphaStep);
       }
       else {
-         const GLfloat alphaStep = span->alphaStep;
-         GLfloat alpha = span->alpha;
+         const GLfloat alphaStep = FixedToFloat(span->alphaStep);
+         GLfloat alpha = FixedToFloat(span->alpha);
          const GLfloat ref = ctx->Color.AlphaRef;
          ALPHA_TEST(alpha, alpha += alphaStep);
       }