diff options
Diffstat (limited to 'video/out/gl_utils.c')
| -rw-r--r-- | video/out/gl_utils.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/video/out/gl_utils.c b/video/out/gl_utils.c index 9429655bd0..3056ce10cc 100644 --- a/video/out/gl_utils.c +++ b/video/out/gl_utils.c @@ -418,20 +418,21 @@ void fbotex_uninit(struct fbotex *fbo) // Standard parallel 2D projection, except y1 < y0 means that the coordinate // system is flipped, not the projection. -void gl_matrix_ortho2d(float m[3][2], float x0, float x1, float y0, float y1) +void gl_transform_ortho(struct gl_transform *t, float x0, float x1, + float y0, float y1) { if (y1 < y0) { - float t = y0; - y0 = t - y1; - y1 = t; + float tmp = y0; + y0 = tmp - y1; + y1 = tmp; } - m[0][0] = 2.0f / (x1 - x0); - m[0][1] = 0.0f; - m[1][0] = 0.0f; - m[1][1] = 2.0f / (y1 - y0); - m[2][0] = -(x1 + x0) / (x1 - x0); - m[2][1] = -(y1 + y0) / (y1 - y0); + t->m[0][0] = 2.0f / (x1 - x0); + t->m[0][1] = 0.0f; + t->m[1][0] = 0.0f; + t->m[1][1] = 2.0f / (y1 - y0); + t->t[0] = -(x1 + x0) / (x1 - x0); + t->t[1] = -(y1 + y0) / (y1 - y0); } static void GLAPIENTRY gl_debug_cb(GLenum source, GLenum type, GLuint id, |