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gallium/u_blitter: clear color buffers using color from a constant buffer

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15318>
This commit is contained in:
Indrajit Kumar Das 2022-05-13 17:02:14 +05:30 • committed by Marge Bot
parent 03bc7503d4
commit 773a23eb6d
3 changed files with 50 additions and 22 deletions
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44
src/gallium/auxiliary/util/u_blitter.c
View file

@ -76,7 +76,7 @@ struct blitter_context_priv
/* Fragment shaders. */
void *fs_empty;
void *fs_write_one_cbuf;
void *fs_write_all_cbufs;
void *fs_clear_all_cbufs;
/* FS which outputs a color from a texture where
* the 1st index indicates the texture type / destination type,
@ -467,18 +467,16 @@ static void bind_fs_write_one_cbuf(struct blitter_context_priv *ctx)
ctx->bind_fs_state(pipe, ctx->fs_write_one_cbuf);
}
static void bind_fs_write_all_cbufs(struct blitter_context_priv *ctx)
static void bind_fs_clear_all_cbufs(struct blitter_context_priv *ctx)
{
struct pipe_context *pipe = ctx->base.pipe;
if (!ctx->fs_write_all_cbufs) {
if (!ctx->fs_clear_all_cbufs) {
assert(!ctx->cached_all_shaders);
ctx->fs_write_all_cbufs =
util_make_fragment_passthrough_shader(pipe, TGSI_SEMANTIC_GENERIC,
TGSI_INTERPOLATE_CONSTANT, true);
ctx->fs_clear_all_cbufs = util_make_fs_clear_all_cbufs(pipe);
}
ctx->bind_fs_state(pipe, ctx->fs_write_all_cbufs);
ctx->bind_fs_state(pipe, ctx->fs_clear_all_cbufs);
}
void util_blitter_destroy(struct blitter_context *blitter)
@ -576,8 +574,8 @@ void util_blitter_destroy(struct blitter_context *blitter)
ctx->delete_fs_state(pipe, ctx->fs_empty);
if (ctx->fs_write_one_cbuf)
ctx->delete_fs_state(pipe, ctx->fs_write_one_cbuf);
if (ctx->fs_write_all_cbufs)
ctx->delete_fs_state(pipe, ctx->fs_write_all_cbufs);
if (ctx->fs_clear_all_cbufs)
ctx->delete_fs_state(pipe, ctx->fs_clear_all_cbufs);
for (i = 0; i < ARRAY_SIZE(ctx->fs_stencil_blit_fallback); ++i)
if (ctx->fs_stencil_blit_fallback[i])
@ -1354,9 +1352,7 @@ void util_blitter_cache_all_shaders(struct blitter_context *blitter)
util_make_fragment_passthrough_shader(pipe, TGSI_SEMANTIC_GENERIC,
TGSI_INTERPOLATE_CONSTANT, false);
ctx->fs_write_all_cbufs =
util_make_fragment_passthrough_shader(pipe, TGSI_SEMANTIC_GENERIC,
TGSI_INTERPOLATE_CONSTANT, true);
ctx->fs_clear_all_cbufs = util_make_fs_clear_all_cbufs(pipe);
ctx->cached_all_shaders = true;
}
@ -1556,17 +1552,20 @@ static void util_blitter_clear_custom(struct blitter_context *blitter,
sr.ref_value[0] = stencil & 0xff;
pipe->set_stencil_ref(pipe, sr);
union blitter_attrib attrib;
memcpy(attrib.color, color->ui, sizeof(color->ui));
bool pass_generic = (clear_buffers & PIPE_CLEAR_COLOR) != 0;
enum blitter_attrib_type type = pass_generic ? UTIL_BLITTER_ATTRIB_COLOR :
UTIL_BLITTER_ATTRIB_NONE;
enum blitter_attrib_type type = UTIL_BLITTER_ATTRIB_NONE;
if (pass_generic)
bind_fs_write_all_cbufs(ctx);
else
if (pass_generic) {
struct pipe_constant_buffer cb = {
.user_buffer = color->f,
.buffer_size = 4 * sizeof(float),
};
pipe->set_constant_buffer(pipe, PIPE_SHADER_FRAGMENT, blitter->cb_slot,
false, &cb);
bind_fs_clear_all_cbufs(ctx);
} else {
bind_fs_empty(ctx);
}
if (num_layers > 1 && ctx->has_layered) {
blitter_get_vs_func get_vs = get_vs_layered;
@ -1574,7 +1573,7 @@ static void util_blitter_clear_custom(struct blitter_context *blitter,
blitter_set_common_draw_rect_state(ctx, false, msaa);
blitter->draw_rectangle(blitter, ctx->velem_state, get_vs,
0, 0, width, height,
(float) depth, num_layers, type, &attrib);
(float) depth, num_layers, type, NULL);
} else {
blitter_get_vs_func get_vs;
@ -1586,11 +1585,12 @@ static void util_blitter_clear_custom(struct blitter_context *blitter,
blitter_set_common_draw_rect_state(ctx, false, msaa);
blitter->draw_rectangle(blitter, ctx->velem_state, get_vs,
0, 0, width, height,
(float) depth, 1, type, &attrib);
(float) depth, 1, type, NULL);
}
util_blitter_restore_vertex_states(blitter);
util_blitter_restore_fragment_states(blitter);
util_blitter_restore_constant_buffer_state(blitter);
util_blitter_restore_render_cond(blitter);
util_blitter_unset_running_flag(blitter);
}

25
src/gallium/auxiliary/util/u_simple_shaders.c
View file

@ -1219,3 +1219,28 @@ util_make_fs_stencil_blit(struct pipe_context *pipe, bool msaa_src)
return pipe->create_fs_state(pipe, &state);
}
void *
util_make_fs_clear_all_cbufs(struct pipe_context *pipe)
{
static const char text[] =
"FRAG\n"
"PROPERTY FS_COLOR0_WRITES_ALL_CBUFS 1\n"
"DCL OUT[0], COLOR[0]\n"
"DCL CONST[0][0]\n"
"MOV OUT[0], CONST[0][0]\n"
"END\n";
struct tgsi_token tokens[1000];
struct pipe_shader_state state = { 0 };
if (!tgsi_text_translate(text, tokens, ARRAY_SIZE(tokens))) {
assert(0);
return NULL;
}
pipe_shader_state_from_tgsi(&state, tokens);
return pipe->create_fs_state(pipe, &state);
}

3
src/gallium/auxiliary/util/u_simple_shaders.h
View file

@ -176,6 +176,9 @@ util_make_tess_ctrl_passthrough_shader(struct pipe_context *pipe,
void *
util_make_fs_stencil_blit(struct pipe_context *pipe, bool msaa_src);
void *
util_make_fs_clear_all_cbufs(struct pipe_context *pipe);
#ifdef __cplusplus
}
#endif