* Note that we're not using span->array->mask[] here. We could...
*/
if (span->array->ChanType == GL_UNSIGNED_BYTE) {
- /* treat 4xGLubyte as 1xGLuint */
- const GLuint srcMask = *((GLuint *) ctx->Color.ColorMask[buf]);
+ GLuint srcMask;
+ memcpy(&srcMask, ctx->Color.ColorMask[buf], sizeof(srcMask));
const GLuint dstMask = ~srcMask;
const GLuint *dst = (const GLuint *) rbPixels;
GLuint *src = (GLuint *) span->array->rgba8;