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poly: Add helpers for filling out poly_geometry_params

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Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Reviewed-by: Mary Guillemard <mary@mary.zone>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38404>
This commit is contained in:
Faith Ekstrand 2025-11-17 12:16:40 -05:00 • committed by Marge Bot
parent ad30ebccb6
commit fd844e0ad4
1 changed files with 47 additions and 21 deletions
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68
src/poly/geometry.h
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@ -301,6 +301,51 @@ struct poly_geometry_params {
} PACKED;
static_assert(sizeof(struct poly_geometry_params) == 85 * 4);
static inline void
poly_geometry_params_init(struct poly_geometry_params *p,
enum mesa_prim prim,
const uint32_t vs_wg_size[3],
const uint32_t gs_wg_size[3])
{
*p = (struct poly_geometry_params) {
.input_topology = prim,
.vs_grid = {
0, 0, 1, /* x/y are set by poly_geometry_params_set_draw() */
vs_wg_size[0], vs_wg_size[1], vs_wg_size[2],
},
.gs_grid = {
0, 0, 1, /* x/y are set by poly_geometry_params_set_draw() */
gs_wg_size[0], gs_wg_size[1], gs_wg_size[2],
},
};
}
static inline void
poly_geometry_params_set_draw(struct poly_geometry_params *p,
enum mesa_prim prim,
enum poly_gs_shape shape, uint32_t max_indices,
uint32_t vertex_count, uint32_t instance_count)
{
/* Calculate number of primitives input into the GS */
const uint32_t prim_per_instance =
u_decomposed_prims_for_vertices(prim, vertex_count);
/* Invoke VS as (vertices, instances); GS as (primitives, instances) */
p->vs_grid[0] = vertex_count;
p->vs_grid[1] = instance_count;
p->gs_grid[0] = prim_per_instance;
p->gs_grid[1] = instance_count;
p->input_primitives = prim_per_instance * instance_count;
p->primitives_log2 = util_logbase2_ceil(prim_per_instance);
p->draw.index_count = poly_gs_rast_vertices(
shape, max_indices, prim_per_instance, instance_count);
p->draw.instance_count = poly_gs_rast_instances(
shape, max_indices, prim_per_instance, instance_count);
}
/* TCS shared memory layout:
*
* vec4 vs_outputs[VERTICES_IN_INPUT_PATCH][TOTAL_VERTEX_OUTPUTS];
@ -561,19 +606,8 @@ poly_gs_setup_indirect(uint64_t index_buffer, constant uint *draw,
uint instance_count = draw[1];
vp->verts_per_instance = vertex_count;
/* Calculate number of primitives input into the GS */
uint prim_per_instance = u_decomposed_prims_for_vertices(prim, vertex_count);
p->input_primitives = prim_per_instance * instance_count;
/* Invoke VS as (vertices, instances); GS as (primitives, instances) */
p->vs_grid[0] = vertex_count;
p->vs_grid[1] = instance_count;
p->gs_grid[0] = prim_per_instance;
p->gs_grid[1] = instance_count;
p->primitives_log2 = util_logbase2_ceil(prim_per_instance);
poly_geometry_params_set_draw(p, prim, shape, max_indices,
vertex_count, instance_count);
/* If indexing is enabled, the third word is the offset into the index buffer
* in elements. Apply that offset now that we have it. For a hardware
@ -602,17 +636,9 @@ poly_gs_setup_indirect(uint64_t index_buffer, constant uint *draw,
vp->outputs = vs_outputs;
p->draw = (struct poly_indirect_draw) {
.index_count = poly_gs_rast_vertices(
shape, max_indices, prim_per_instance, instance_count),
.instance_count = poly_gs_rast_instances(
shape, max_indices, prim_per_instance, instance_count),
};
if (shape == POLY_GS_SHAPE_DYNAMIC_INDEXED) {
const uint32_t index_offset =
poly_heap_alloc_nonatomic_offs(heap, p->draw.index_count * 4);
p->draw.first_index = index_offset / 4;
p->output_index_buffer = (global uint *)(heap->base + index_offset);
}