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Fix #141781: EEVEE: IBL broken on Intel Iris 580

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The shader was missing barriers compared to the old code.

Candidate for 4.5 LTS backport.

Co-authored-by: Clément Foucault <fclem@noreply.localhost>
Pull Request: https://projects.blender.org/blender/blender/pulls/141971
This commit is contained in:
Miguel Pozo
2025-07-18 15:29:35 +02:00
parent 9c98ea1a18
commit f62bc68a69
1 changed files with 8 additions and 3 deletions
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11
source/blender/draw/engines/eevee/shaders/eevee_lightprobe_sphere_remap_comp.glsl
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@@ -137,13 +137,15 @@ void main()
/* OpenGL/Intel drivers have known issues where it isn't able to compile barriers inside for
* loops. Unroll is needed as driver might decide to not unroll in shaders with more
* complexity. */
[[gpu::unroll(10)]] for (uint stride = group_size / 2; stride > 0; stride /= 2)
[[gpu::unroll]] for (uint i = 0; i < 10; i++)
{
barrier();
uint stride = group_size >> (i + 1u);
if (local_index < stride) {
local_radiance[local_index] += local_radiance[local_index + stride];
}
}
barrier();
if (gl_LocalInvocationIndex == 0u) {
out_sun[work_group_index].radiance = local_radiance[0].xyz;
@@ -158,9 +160,10 @@ void main()
/* OpenGL/Intel drivers have known issues where it isn't able to compile barriers inside for
* loops. Unroll is needed as driver might decide to not unroll in shaders with more
* complexity. */
[[gpu::unroll(10)]] for (uint stride = group_size / 2; stride > 0; stride /= 2)
[[gpu::unroll]] for (uint i = 0; i < 10; i++)
{
barrier();
uint stride = group_size >> (i + 1u);
if (local_index < stride) {
local_direction[local_index] += local_direction[local_index + stride];
}
@@ -179,13 +182,15 @@ void main()
/* OpenGL/Intel drivers have known issues where it isn't able to compile barriers inside for
* loops. Unroll is needed as driver might decide to not unroll in shaders with more
* complexity. */
[[gpu::unroll(10)]] for (uint stride = group_size / 2; stride > 0; stride /= 2)
[[gpu::unroll]] for (uint i = 0; i < 10; i++)
{
barrier();
uint stride = group_size >> (i + 1u);
if (local_index < stride) {
local_radiance[local_index] += local_radiance[local_index + stride];
}
}
barrier();
if (gl_LocalInvocationIndex == 0u) {
/* Find the middle point of the whole thread-group. Use it as light vector.