mirrors/monado
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/monado/monado.git synced 2025-01-01 04:36:07 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

c/render: Optimize layer shader

Browse source
This commit is contained in:
Jakob Bornecrantz 2023-09-14 18:11:18 +01:00
parent bd38e90b51
commit 141e598295
3 changed files with 20 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
src/xrt/compositor/render/render_interface.h
View file

@ -800,6 +800,12 @@ struct render_compute_layer_ubo_data
{
struct render_viewport_data view;
struct
{
uint32_t value;
uint32_t padding[3];
} layer_count;
struct xrt_normalized_rect pre_transform;
struct xrt_normalized_rect post_transforms[RENDER_MAX_LAYERS];

24
src/xrt/compositor/shaders/layer.comp
View file

@ -31,6 +31,7 @@ layout(set = 0, binding = 2) uniform writeonly restrict image2D target;
layout(set = 0, binding = 3, std140) uniform restrict Config
{
ivec4 view;
ivec4 layer_count;
vec4 pre_transform;
vec4 post_transform[RENDER_MAX_LAYERS];
@ -232,33 +233,30 @@ vec4 do_quad(vec2 view_uv, uint layer)
vec4 do_layers(vec2 view_uv)
{
vec4 accum = vec4(0, 0, 0, 0);
for (uint layer = 0; layer < RENDER_MAX_LAYERS; layer++) {
bool use_layer = false;
int layer_count = ubo.layer_count.x;
for (uint layer = 0; layer < layer_count; layer++) {
vec4 rgba = vec4(0, 0, 0, 0);
switch (ubo.layer_type_and_unpremultiplied[layer].x) {
case XRT_LAYER_STEREO_PROJECTION:
case XRT_LAYER_STEREO_PROJECTION_DEPTH:
rgba = do_projection(view_uv, layer);
use_layer = true;
break;
case XRT_LAYER_QUAD:
rgba = do_quad(view_uv, layer);
use_layer = true;
break;
default: break;
}
if (use_layer) {
if (ubo.layer_type_and_unpremultiplied[layer].y != 0) {
// Unpremultipled blend factor of src.a.
accum.rgb = mix(accum.rgb, rgba.rgb, rgba.a);
} else {
// Premultiplied blend factor of 1.
accum.rgb = (accum.rgb * (1 - rgba.a)) + rgba.rgb;
}
accum.a = rgba.a + accum.a * (1.0 - rgba.a);
if (ubo.layer_type_and_unpremultiplied[layer].y != 0) {
// Unpremultipled blend factor of src.a.
accum.rgb = mix(accum.rgb, rgba.rgb, rgba.a);
} else {
// Premultiplied blend factor of 1.
accum.rgb = (accum.rgb * (1 - rgba.a)) + rgba.rgb;
}
accum.a = rgba.a + accum.a * (1.0 - rgba.a);
}
return accum;

3
src/xrt/compositor/util/comp_render.c
View file

@ -514,6 +514,9 @@ comp_render_layer(struct render_compute *crc,
cur_layer++;
}
// Set the number of layers.
ubo_data->layer_count.value = cur_layer;
for (uint32_t i = cur_layer; i < RENDER_MAX_LAYERS; i++) {
ubo_data->layer_type[i].val = UINT32_MAX;
}