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GPUFramebuffer: Fix recursive downsample exiting early.

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I should really proof read my commits a bit more.
This commit is contained in:
Clément Foucault
2017-10-17 03:06:04 +02:00
parent 7d71007cfb
commit 8ffb761387
1 changed files with 7 additions and 6 deletions
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13
source/blender/gpu/intern/gpu_framebuffer.c
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@@ -576,23 +576,24 @@ void GPU_framebuffer_recursive_downsample(
for (i = 1; i < num_iter + 1; i++) {
/* calculate next viewport size */
current_dim[0] /= 2;
current_dim[1] /= 2;
if (GPU_type_matches(GPU_DEVICE_AMD_VEGA, GPU_OS_UNIX, GPU_DRIVER_OPENSOURCE)) {
/* NOTE : here 16 is because of a bug on AMD Vega GPU + non-pro drivers, that prevents us
* from sampling mipmaps that are smaller or equal to 16px. (9) */
if (current_dim[0] / 2 > 16 && current_dim[1] / 2 > 16) {
if (current_dim[0] <= 16 && current_dim[1] <= 16) {
break;
}
}
else {
if (current_dim[0] / 2 > 1 && current_dim[1] / 2 > 1) {
if (current_dim[0] <= 2 && current_dim[1] <= 2) {
/* Cannot reduce further. */
break;
}
}
/* calculate next viewport size */
current_dim[0] /= 2;
current_dim[1] /= 2;
/* ensure that the viewport size is always at least 1x1 */
CLAMP_MIN(current_dim[0], 1);
CLAMP_MIN(current_dim[1], 1);