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Vulkan: Initial Cube(Array) Support

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This PR adds initial cube (array) support. Depending on how the texture
is used a different image view is created. When used as a framebuffer
attachment only a single side of the cubemap is attached. The image
view is attached as a 2d texture array. When used as a shader resource
the image view is a cubemap.

Also adds test cases to test both scenarios.

Pull Request: https://projects.blender.org/blender/blender/pulls/108794
This commit is contained in:
Jeroen Bakker
2023-06-09 16:09:54 +02:00
parent 5400fe941e
commit 2ee2ae93fb
11 changed files with 176 additions and 22 deletions
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49
source/blender/gpu/tests/framebuffer_test.cc
View File

@@ -4,6 +4,7 @@
#include "testing/testing.h"
#include "GPU_context.h"
#include "GPU_framebuffer.h"
#include "gpu_testing.hh"
@@ -199,4 +200,52 @@ static void test_framebuffer_scissor_test()
}
GPU_TEST(framebuffer_scissor_test);
/* Color each side of a cubemap with a different color. */
static void test_framebuffer_cube()
{
const int SIZE = 32;
GPU_render_begin();
eGPUTextureUsage usage = GPU_TEXTURE_USAGE_ATTACHMENT | GPU_TEXTURE_USAGE_HOST_READ;
GPUTexture *tex = GPU_texture_create_cube("tex", SIZE, 1, GPU_RGBA32F, usage, nullptr);
const float4 clear_colors[6] = {
{0.5f, 0.0f, 0.0f, 1.0f},
{1.0f, 0.0f, 0.0f, 1.0f},
{0.0f, 0.5f, 0.0f, 1.0f},
{0.0f, 1.0f, 0.0f, 1.0f},
{0.0f, 0.0f, 0.5f, 1.0f},
{0.0f, 0.0f, 1.0f, 1.0f},
};
GPUFrameBuffer *framebuffers[6] = {nullptr};
for (int i : IndexRange(6)) {
GPU_framebuffer_ensure_config(&framebuffers[i],
{
GPU_ATTACHMENT_NONE,
GPU_ATTACHMENT_TEXTURE_CUBEFACE(tex, i),
});
GPU_framebuffer_bind(framebuffers[i]);
GPU_framebuffer_clear_color(framebuffers[i], clear_colors[i]);
};
float4 *data = (float4 *)GPU_texture_read(tex, GPU_DATA_FLOAT, 0);
for (int side : IndexRange(6)) {
for (int pixel_index : IndexRange(SIZE * SIZE)) {
int index = pixel_index + (SIZE * SIZE) * side;
EXPECT_EQ(clear_colors[side], data[index]);
}
}
MEM_freeN(data);
GPU_texture_free(tex);
for (int i : IndexRange(6)) {
GPU_FRAMEBUFFER_FREE_SAFE(framebuffers[i]);
}
GPU_render_end();
}
GPU_TEST(framebuffer_cube)
} // namespace blender::gpu::tests