diff options
| -rw-r--r-- | src/mesa/pipe/i915simple/i915_state.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/mesa/pipe/i915simple/i915_state.c b/src/mesa/pipe/i915simple/i915_state.c index ebc55eb6346..a176165b74a 100644 --- a/src/mesa/pipe/i915simple/i915_state.c +++ b/src/mesa/pipe/i915simple/i915_state.c @@ -189,11 +189,24 @@ static void i915_set_viewport_state( struct pipe_context *pipe, const struct pipe_viewport_state *viewport ) { struct i915_context *i915 = i915_context(pipe); + float sy, ty; i915->viewport = *viewport; /* struct copy */ + /* Negate Y scale to flip image vertically. + * The NDC Y coords prior to viewport transformation are in the range + * [y=-1=bottom, y=1=top] + * Intel window coords are in the range [y=0=top, y=H-1=bottom] where H + * is the window height. + * Use the viewport transformation to invert Y. + */ + sy = viewport->scale[1]; + ty = viewport->translate[1]; + i915->viewport.scale[1] = -sy; + i915->viewport.translate[1] = i915->framebuffer.cbufs[0]->height - ty; + /* pass the viewport info to the draw module */ - draw_set_viewport_state(i915->draw, viewport); + draw_set_viewport_state(i915->draw, &i915->viewport); /* Using tnl/ and vf/ modules is temporary while getting started. * Full pipe will have vertex shader, vertex fetch of its own. |