From c6f69eea6ac549fc2ffa46944de4dd82c9b53329 Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Mon, 3 Apr 2017 12:25:15 -0700 Subject: [PATCH] anv/pipeline: Properly handle unset gl_Layer and gl_ViewportIndex When the shader does not set one of these values, they are supposed to get a default value of 0. We have hardware bits in 3DSTATE_CLIP for this but haven't been setting them. This fixes the intermittent failure of dEQP-VK.geometry.layered.3d.render_to_default_layer. Reviewed-by: Kenneth Graunke Cc: "13.0 17.0" --- src/intel/vulkan/genX_pipeline.c | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) diff --git a/src/intel/vulkan/genX_pipeline.c b/src/intel/vulkan/genX_pipeline.c index 85a9e4fd290..3fd1333e1e6 100644 --- a/src/intel/vulkan/genX_pipeline.c +++ b/src/intel/vulkan/genX_pipeline.c @@ -1014,14 +1014,35 @@ emit_3dstate_clip(struct anv_pipeline *pipeline, clip.MinimumPointWidth = 0.125; clip.MaximumPointWidth = 255.875; - clip.MaximumVPIndex = (vp_info ? vp_info->viewportCount : 1) - 1; + + const struct brw_vue_prog_data *last = + anv_pipeline_get_last_vue_prog_data(pipeline); + + /* From the Vulkan 1.0.45 spec: + * + * "If the last active vertex processing stage shader entry point's + * interface does not include a variable decorated with + * ViewportIndex, then the first viewport is used." + */ + if (vp_info && (last->vue_map.slots_valid & VARYING_BIT_VIEWPORT)) { + clip.MaximumVPIndex = vp_info->viewportCount - 1; + } else { + clip.MaximumVPIndex = 0; + } + + /* From the Vulkan 1.0.45 spec: + * + * "If the last active vertex processing stage shader entry point's + * interface does not include a variable decorated with Layer, then + * the first layer is used." + */ + clip.ForceZeroRTAIndexEnable = + !(last->vue_map.slots_valid & VARYING_BIT_LAYER); #if GEN_GEN == 7 clip.FrontWinding = vk_to_gen_front_face[rs_info->frontFace]; clip.CullMode = vk_to_gen_cullmode[rs_info->cullMode]; clip.ViewportZClipTestEnable = !pipeline->depth_clamp_enable; - const struct brw_vue_prog_data *last = - anv_pipeline_get_last_vue_prog_data(pipeline); if (last) { clip.UserClipDistanceClipTestEnableBitmask = last->clip_distance_mask; clip.UserClipDistanceCullTestEnableBitmask = last->cull_distance_mask; -- 2.11.0