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wined3d: Construct the projection matrix directly in set_blit_dimension(). 

This saves a needless matrix multiplication and is actually more obvious than
the glOrtho() call.
This commit is contained in:
Henri Verbeet 2011-11-01 20:15:18 +01:00 committed by Alexandre Julliard
parent 9893222184
commit 1c91b08220
1 changed files with 12 additions and 5 deletions
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17
dlls/wined3d/context.c
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@ -1666,13 +1666,20 @@ void context_destroy(struct wined3d_device *device, struct wined3d_context *cont
}
/* GL locking is done by the caller */
static inline void set_blit_dimension(UINT width, UINT height) {
static void set_blit_dimension(UINT width, UINT height)
{
const GLdouble projection[] =
{
2.0 / width, 0.0, 0.0, 0.0,
0.0, 2.0 / height, 0.0, 0.0,
0.0, 0.0, 2.0, 0.0,
-1.0, -1.0, -1.0, 1.0,
};
glMatrixMode(GL_PROJECTION);
checkGLcall("glMatrixMode(GL_PROJECTION)");
glLoadIdentity();
checkGLcall("glLoadIdentity()");
glOrtho(0, width, 0, height, 0.0, -1.0);
checkGLcall("glOrtho");
glLoadMatrixd(projection);
checkGLcall("glLoadMatrixd");
glViewport(0, 0, width, height);
checkGLcall("glViewport");
}