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v3dv: enable forward facing primitive for lines and points

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Otherwise these primitives will be discarded.

Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38105>
This commit is contained in:
Juan A. Suarez Romero 2025-10-28 11:44:08 +01:00 • committed by Marge Bot
parent 2036240b7c
commit 44022bc33e
1 changed files with 9 additions and 1 deletions
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10
src/broadcom/vulkan/v3dvx_cmd_buffer.c
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@ -2036,7 +2036,15 @@ v3dX(cmd_buffer_emit_configuration_bits)(struct v3dv_cmd_buffer *cmd_buffer)
if (!dyn->rs.rasterizer_discard_enable) {
assert(BITSET_TEST(dyn->set, MESA_VK_DYNAMIC_RS_CULL_MODE));
assert(BITSET_TEST(dyn->set, MESA_VK_DYNAMIC_RS_FRONT_FACE));
config.enable_forward_facing_primitive = !(dyn->rs.cull_mode & VK_CULL_MODE_FRONT_BIT);
const enum mesa_prim reduced_prim =
u_reduced_prim(vk_topology_to_mesa(dyn->ia.primitive_topology));
/* When drawing points and lines, they will be discarded if forward
* facing primitive is not enabled.
*/
config.enable_forward_facing_primitive =
reduced_prim == MESA_PRIM_LINES ||
reduced_prim == MESA_PRIM_POINTS ||
!(dyn->rs.cull_mode & VK_CULL_MODE_FRONT_BIT);
config.enable_reverse_facing_primitive = !(dyn->rs.cull_mode & VK_CULL_MODE_BACK_BIT);
/* Seems like the hardware is backwards regarding this setting... */
config.clockwise_primitives = dyn->rs.front_face == VK_FRONT_FACE_COUNTER_CLOCKWISE;