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freedreno/ir3: Make a shared helper for the tess factor stride. 

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6089>
This commit is contained in:
Emma Anholt 2021-11-17 11:07:42 -08:00 committed by Marge Bot
parent 17de0841ae
commit 3748b8afce
3 changed files with 24 additions and 34 deletions
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20
src/freedreno/ir3/ir3_shader.h
View File

@ -299,8 +299,8 @@ struct ir3_shader_key {
* topology the TES uses, which the TCS needs to know.
*/
#define IR3_TESS_NONE 0
#define IR3_TESS_TRIANGLES 1
#define IR3_TESS_QUADS 2
#define IR3_TESS_QUADS 1
#define IR3_TESS_TRIANGLES 2
#define IR3_TESS_ISOLINES 3
unsigned tessellation : 2;
@ -349,6 +349,22 @@ ir3_tess_mode(unsigned gl_tess_mode)
}
}
static inline uint32_t
ir3_tess_factor_stride(unsigned patch_type)
{
/* note: this matches the stride used by ir3's build_tessfactor_base */
switch (patch_type) {
case IR3_TESS_ISOLINES:
return 12;
case IR3_TESS_TRIANGLES:
return 20;
case IR3_TESS_QUADS:
return 28;
default:
unreachable("bad tessmode");
}
}
static inline bool
ir3_shader_key_equal(const struct ir3_shader_key *a,
const struct ir3_shader_key *b)

15
src/freedreno/vulkan/tu_cmd_buffer.c
View File

@ -3509,20 +3509,7 @@ get_tess_factor_bo_size(const struct tu_pipeline *pipeline,
/* Each distinct patch gets its own tess factor output. */
uint32_t verts_per_patch = pipeline->ia.primtype - DI_PT_PATCHES0;
uint32_t num_patches = draw_count / verts_per_patch;
uint32_t factor_stride;
switch (pipeline->tess.patch_type) {
case IR3_TESS_ISOLINES:
factor_stride = 12;
break;
case IR3_TESS_TRIANGLES:
factor_stride = 20;
break;
case IR3_TESS_QUADS:
factor_stride = 28;
break;
default:
unreachable("bad tessmode");
}
uint32_t factor_stride = ir3_tess_factor_stride(pipeline->tess.patch_type);
return factor_stride * num_patches;
}

23
src/gallium/drivers/freedreno/a6xx/fd6_draw.c
View File

@ -251,25 +251,12 @@ fd6_draw_vbo(struct fd_context *ctx, const struct pipe_draw_info *info,
}
if (info->mode == PIPE_PRIM_PATCHES) {
shader_info *ds_info = &emit.ds->shader->nir->info;
uint32_t factor_stride;
uint32_t factor_stride = ir3_tess_factor_stride(emit.key.key.tessellation);
switch (ds_info->tess.primitive_mode) {
case GL_ISOLINES:
draw0.patch_type = TESS_ISOLINES;
factor_stride = 12;
break;
case GL_TRIANGLES:
draw0.patch_type = TESS_TRIANGLES;
factor_stride = 20;
break;
case GL_QUADS:
draw0.patch_type = TESS_QUADS;
factor_stride = 28;
break;
default:
unreachable("bad tessmode");
}
STATIC_ASSERT(IR3_TESS_ISOLINES == TESS_ISOLINES + 1);
STATIC_ASSERT(IR3_TESS_TRIANGLES == TESS_TRIANGLES + 1);
STATIC_ASSERT(IR3_TESS_QUADS == TESS_QUADS + 1);
draw0.patch_type = emit.key.key.tessellation - 1;
draw0.prim_type = DI_PT_PATCHES0 + ctx->patch_vertices;
draw0.tess_enable = true;