Cycles OpenGL: Don't use full matrix transform when we can just use

simple addition.

1 files changed, 4 insertions, 9 deletions

diff --git a/intern/cycles/device/device.cpp b/intern/cycles/device/device.cpp
index 3a33b8fb68b..839f35116fa 100644
--- a/intern/cycles/device/device.cpp
+++ b/intern/cycles/device/device.cpp
@@ -83,24 +83,19 @@ void Device::draw_pixels(device_memory& rgba, int y, int w, int h, int dy, int w
 			draw_params.bind_display_space_shader_cb();
 		}
 
-		glPushMatrix();
-		glTranslatef(0.0f, (float)dy, 0.0f);
-
 		glBegin(GL_QUADS);
 		
 		glTexCoord2f(0.0f, 0.0f);
-		glVertex2f(0.0f, 0.0f);
+		glVertex2f(0.0f, dy);
 		glTexCoord2f(1.0f, 0.0f);
-		glVertex2f((float)width, 0.0f);
+		glVertex2f((float)width, dy);
 		glTexCoord2f(1.0f, 1.0f);
-		glVertex2f((float)width, (float)height);
+		glVertex2f((float)width, (float)height + dy);
 		glTexCoord2f(0.0f, 1.0f);
-		glVertex2f(0.0f, (float)height);
+		glVertex2f(0.0f, (float)height + dy);
 
 		glEnd();
 
-		glPopMatrix();
-
 		if(draw_params.unbind_display_space_shader_cb) {
 			draw_params.unbind_display_space_shader_cb();
 		}