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anv: Handle clamping of inverted depth ranges

Browse source 
Tested-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Reviewed-by: Ivan Briano <ivan.briano@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5792>
(cherry picked from commit 1d5e1882f6)
This commit is contained in:
Jason Ekstrand 2020-07-07 11:08:31 -05:00 • committed by Eric Engestrom
parent 68155102fb
commit 726d841df9
2 changed files with 11 additions and 3 deletions
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2
.pick_status.json
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@ -319,7 +319,7 @@
"description": "anv: Handle clamping of inverted depth ranges",
"nominated": false,
"nomination_type": null,
"resolution": 4,
"resolution": 1,
"master_sha": null,
"because_sha": null
},

12
src/intel/vulkan/gen8_cmd_buffer.c
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@ -104,9 +104,17 @@ gen8_cmd_buffer_emit_depth_viewport(struct anv_cmd_buffer *cmd_buffer,
for (uint32_t i = 0; i < count; i++) {
const VkViewport *vp = &viewports[i];
/* From the Vulkan spec:
*
* "It is valid for minDepth to be greater than or equal to
* maxDepth."
*/
float min_depth = MIN2(vp->minDepth, vp->maxDepth);
float max_depth = MAX2(vp->minDepth, vp->maxDepth);
struct GENX(CC_VIEWPORT) cc_viewport = {
.MinimumDepth = depth_clamp_enable ? vp->minDepth : 0.0f,
.MaximumDepth = depth_clamp_enable ? vp->maxDepth : 1.0f,
.MinimumDepth = depth_clamp_enable ? min_depth : 0.0f,
.MaximumDepth = depth_clamp_enable ? max_depth : 1.0f,
};
GENX(CC_VIEWPORT_pack)(NULL, cc_state.map + i * 8, &cc_viewport);