gallium/radeon: handle vertex shaders that disable clipping & viewport
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
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@ -455,6 +455,7 @@ struct r600_common_context {
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struct r600_viewports viewports;
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bool scissor_enabled;
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bool vs_writes_viewport_index;
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bool vs_disables_clipping_viewport;
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/* Additional context states. */
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unsigned flags; /* flush flags */
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@ -130,7 +130,12 @@ static void r600_emit_one_scissor(struct r600_common_context *rctx,
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{
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struct pipe_scissor_state final;
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r600_clamp_scissor(rctx, &final, vp_scissor);
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if (rctx->vs_disables_clipping_viewport) {
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final.minx = final.miny = 0;
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final.maxx = final.maxy = GET_MAX_SCISSOR(rctx);
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} else {
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r600_clamp_scissor(rctx, &final, vp_scissor);
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}
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if (scissor)
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r600_clip_scissor(&final, scissor);
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@ -324,9 +329,22 @@ void r600_set_scissor_enable(struct r600_common_context *rctx, bool enable)
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void r600_update_vs_writes_viewport_index(struct r600_common_context *rctx,
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struct tgsi_shader_info *info)
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{
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bool vs_window_space;
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if (!info)
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return;
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/* When the VS disables clipping and viewport transformation. */
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vs_window_space =
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info->properties[TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION];
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if (rctx->vs_disables_clipping_viewport != vs_window_space) {
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rctx->vs_disables_clipping_viewport = vs_window_space;
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rctx->scissors.dirty_mask = (1 << R600_MAX_VIEWPORTS) - 1;
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rctx->set_atom_dirty(rctx, &rctx->scissors.atom, true);
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}
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/* Viewport index handling. */
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rctx->vs_writes_viewport_index = info->writes_viewport_index;
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if (!rctx->vs_writes_viewport_index)
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return;
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