diff options
Diffstat (limited to 'src/gallium/drivers/nv40/nv40_state_viewport.c')
| -rw-r--r-- | src/gallium/drivers/nv40/nv40_state_viewport.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv40/nv40_state_viewport.c b/src/gallium/drivers/nv40/nv40_state_viewport.c new file mode 100644 index 0000000000..1b6248e5b8 --- /dev/null +++ b/src/gallium/drivers/nv40/nv40_state_viewport.c @@ -0,0 +1,66 @@ +#include "nv40_context.h" + +static boolean +nv40_state_viewport_validate(struct nv40_context *nv40) +{ + struct nouveau_stateobj *so = so_new(11, 0); + struct pipe_viewport_state *vpt = &nv40->viewport; + unsigned bypass; + + if (nv40->render_mode == HW && !nv40->rasterizer->pipe.bypass_clipping) + bypass = 0; + else + bypass = 1; + + if (nv40->state.hw[NV40_STATE_VIEWPORT] && + (bypass || !(nv40->dirty & NV40_NEW_VIEWPORT)) && + nv40->state.viewport_bypass == bypass) + return FALSE; + nv40->state.viewport_bypass = bypass; + + if (!bypass) { + so_method(so, nv40->screen->curie, + NV40TCL_VIEWPORT_TRANSLATE_X, 8); + so_data (so, fui(vpt->translate[0])); + so_data (so, fui(vpt->translate[1])); + so_data (so, fui(vpt->translate[2])); + so_data (so, fui(vpt->translate[3])); + so_data (so, fui(vpt->scale[0])); + so_data (so, fui(vpt->scale[1])); + so_data (so, fui(vpt->scale[2])); + so_data (so, fui(vpt->scale[3])); + so_method(so, nv40->screen->curie, 0x1d78, 1); + so_data (so, 1); + } else { + so_method(so, nv40->screen->curie, + NV40TCL_VIEWPORT_TRANSLATE_X, 8); + so_data (so, fui(0.0)); + so_data (so, fui(0.0)); + so_data (so, fui(0.0)); + so_data (so, fui(0.0)); + so_data (so, fui(1.0)); + so_data (so, fui(1.0)); + so_data (so, fui(1.0)); + so_data (so, fui(0.0)); + /* Not entirely certain what this is yet. The DDX uses this + * value also as it fixes rendering when you pass + * pre-transformed vertices to the GPU. My best gusss is that + * this bypasses some culling/clipping stage. Might be worth + * noting that points/lines are uneffected by whatever this + * value fixes, only filled polygons are effected. + */ + so_method(so, nv40->screen->curie, 0x1d78, 1); + so_data (so, 0x110); + } + + so_ref(so, &nv40->state.hw[NV40_STATE_VIEWPORT]); + return TRUE; +} + +struct nv40_state_entry nv40_state_viewport = { + .validate = nv40_state_viewport_validate, + .dirty = { + .pipe = NV40_NEW_VIEWPORT | NV40_NEW_RAST, + .hw = NV40_STATE_VIEWPORT + } +}; |