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pvr: Handle VK_CULL_MODE_FRONT_AND_BACK.

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Signed-off-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com>
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18550>
This commit is contained in:
Karmjit Mahil 2022-08-26 16:15:21 +01:00 • committed by Marge Bot
parent 075d8aeb67
commit 460b19d393
1 changed files with 17 additions and 1 deletions
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18
src/imagination/vulkan/pvr_cmd_buffer.c
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@ -4064,6 +4064,7 @@ static void pvr_setup_ppp_control(struct pvr_cmd_buffer *const cmd_buffer)
break;
case VK_CULL_MODE_FRONT_AND_BACK:
case VK_CULL_MODE_NONE:
control.cullmode = PVRX(TA_CULLMODE_NO_CULLING);
break;
@ -4339,8 +4340,23 @@ pvr_emit_dirty_ppp_state(struct pvr_cmd_buffer *const cmd_buffer,
pvr_setup_ppp_control(cmd_buffer);
/* The hardware doesn't have an explicit mode for this so we use a
* negative viewport to make sure all objects are culled out early.
*/
if (gfx_pipeline->raster_state.cull_mode == VK_CULL_MODE_FRONT_AND_BACK) {
/* FIXME: Port SetNegativeViewport(). */
/* Shift the viewport out of the guard-band culling everything. */
const uint32_t negative_vp_val = fui(-2.0f);
state->ppp_state.viewports[0].a0 = negative_vp_val;
state->ppp_state.viewports[0].m0 = 0;
state->ppp_state.viewports[0].a1 = negative_vp_val;
state->ppp_state.viewports[0].m1 = 0;
state->ppp_state.viewports[0].a2 = negative_vp_val;
state->ppp_state.viewports[0].m2 = 0;
state->ppp_state.viewport_count = 1;
state->emit_state.viewport = true;
}
result = pvr_emit_ppp_state(cmd_buffer, sub_cmd);