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gallium/radeon: handle vertex shaders that disable clipping & viewport

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Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák
2016-04-13 17:28:30 +02:00
parent 696d8ff5a1
commit c1a2fe7fd1
2 changed files with 20 additions and 1 deletions
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1
src/gallium/drivers/radeon/r600_pipe_common.h
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@@ -455,6 +455,7 @@ struct r600_common_context {
struct r600_viewports viewports; struct r600_viewports viewports;
bool scissor_enabled; bool scissor_enabled;
bool vs_writes_viewport_index; bool vs_writes_viewport_index;
bool vs_disables_clipping_viewport;
/* Additional context states. */ /* Additional context states. */
unsigned flags; /* flush flags */ unsigned flags; /* flush flags */

20
src/gallium/drivers/radeon/r600_viewport.c
View File

@@ -130,7 +130,12 @@ static void r600_emit_one_scissor(struct r600_common_context *rctx,
{ {
struct pipe_scissor_state final; struct pipe_scissor_state final;
r600_clamp_scissor(rctx, &final, vp_scissor); if (rctx->vs_disables_clipping_viewport) {
final.minx = final.miny = 0;
final.maxx = final.maxy = GET_MAX_SCISSOR(rctx);
} else {
r600_clamp_scissor(rctx, &final, vp_scissor);
}
if (scissor) if (scissor)
r600_clip_scissor(&final, scissor); r600_clip_scissor(&final, scissor);
@@ -324,9 +329,22 @@ void r600_set_scissor_enable(struct r600_common_context *rctx, bool enable)
void r600_update_vs_writes_viewport_index(struct r600_common_context *rctx, void r600_update_vs_writes_viewport_index(struct r600_common_context *rctx,
struct tgsi_shader_info *info) struct tgsi_shader_info *info)
{ {
bool vs_window_space;
if (!info) if (!info)
return; return;
/* When the VS disables clipping and viewport transformation. */
vs_window_space =
info->properties[TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION];
if (rctx->vs_disables_clipping_viewport != vs_window_space) {
rctx->vs_disables_clipping_viewport = vs_window_space;
rctx->scissors.dirty_mask = (1 << R600_MAX_VIEWPORTS) - 1;
rctx->set_atom_dirty(rctx, &rctx->scissors.atom, true);
}
/* Viewport index handling. */
rctx->vs_writes_viewport_index = info->writes_viewport_index; rctx->vs_writes_viewport_index = info->writes_viewport_index;
if (!rctx->vs_writes_viewport_index) if (!rctx->vs_writes_viewport_index)
return; return;