mesa: use sizeof on the correct type

Before the luminance stride was based on the size of GL_FLOAT
which is just the type constant (0x1406). Change it to use the
size of GLfloat.

Reviewed-by: Brian Paul <brianp@vmware.com>

diff --git a/src/mesa/main/readpix.c b/src/mesa/main/readpix.c
index 470182ab23d7796abd373c0258a4c40fd937a59d..882d863c1c7c658ea78d149e4d7901891dea65d7 100644 (file)
--- a/src/mesa/main/readpix.c
+++ b/src/mesa/main/readpix.c
@@ -582,7 +582,7 @@ read_rgba_pixels( struct gl_context *ctx,
       void *luminance;
       uint32_t luminance_format;
 
-      luminance_stride = width * sizeof(GL_FLOAT);
+      luminance_stride = width * sizeof(GLfloat);
       if (format == GL_LUMINANCE_ALPHA)
          luminance_stride *= 2;
       luminance_bytes = height * luminance_stride;