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base: bc7 support

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This commit is contained in:
luboslenco
2026-04-04 13:07:01 +02:00
parent 088ba1c03b
commit 4e113a3305
14 changed files with 330 additions and 187 deletions
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base/sources/backends/webgpu_gpu.c
+47 -14
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@@ -135,9 +135,9 @@ static void create_descriptors(void) {
};
descriptor_layout = wgpuDeviceCreateBindGroupLayout(device, &layout_create_info);
bindings[1].sampler.type = WGPUSamplerBindingType_NonFiltering;
bindings[1].sampler.type = WGPUSamplerBindingType_NonFiltering;
bindings[2].texture.sampleType = WGPUTextureSampleType_UnfilterableFloat;
descriptor_layout_depth = wgpuDeviceCreateBindGroupLayout(device, &layout_create_info);
descriptor_layout_depth = wgpuDeviceCreateBindGroupLayout(device, &layout_create_info);
WGPUTextureDescriptor dummy_desc = {
.size = {1, 1, 1},
@@ -318,10 +318,10 @@ void gpu_begin_internal(gpu_clear_t flags, unsigned color, float depth) {
wgpuSurfaceGetCurrentTexture(surface, &surface_texture);
framebuffers[0].impl.texture = surface_texture.texture;
WGPUTextureViewDescriptor view_info = {
.dimension = WGPUTextureViewDimension_2D,
.format = WGPUTextureFormat_RGBA8Unorm,
.mipLevelCount = 1,
.arrayLayerCount = 1,
.dimension = WGPUTextureViewDimension_2D,
.format = WGPUTextureFormat_RGBA8Unorm,
.mipLevelCount = 1,
.arrayLayerCount = 1,
};
framebuffers[0].impl.view = wgpuTextureCreateView(surface_texture.texture, &view_info);
framebuffers[0].width = width;
@@ -531,7 +531,7 @@ void gpu_pipeline_compile(gpu_pipeline_t *pipeline) {
pipeline->impl.pipeline_layout = wgpuDeviceCreatePipelineLayout(device, &pipeline_layout_create_info);
pipeline_layout_create_info.bindGroupLayouts = &descriptor_layout_depth;
pipeline->impl.pipeline_layout_depth = wgpuDeviceCreatePipelineLayout(device, &pipeline_layout_create_info);
pipeline->impl.pipeline_layout_depth = wgpuDeviceCreatePipelineLayout(device, &pipeline_layout_create_info);
WGPURenderPipelineDescriptor pipeline_desc = {0};
pipeline_desc.layout = pipeline->impl.pipeline_layout;
@@ -625,7 +625,7 @@ void gpu_pipeline_compile(gpu_pipeline_t *pipeline) {
pipeline->impl.pipeline = wgpuDeviceCreateRenderPipeline(device, &pipeline_desc);
pipeline_desc.layout = pipeline->impl.pipeline_layout_depth;
pipeline_desc.layout = pipeline->impl.pipeline_layout_depth;
pipeline->impl.pipeline_depth = wgpuDeviceCreateRenderPipeline(device, &pipeline_desc);
wgpuShaderModuleRelease(pipeline_desc.vertex.module);
@@ -650,12 +650,29 @@ void gpu_texture_init_from_bytes(gpu_texture_t *texture, void *data, int width,
texture->format = format;
texture->state = GPU_TEXTURE_STATE_SHADER_RESOURCE;
WGPUTextureFormat wgpu_format = convert_image_format(format);
int bpp = gpu_texture_format_size(format);
int aligned_bpr = bytes_per_row_align(width * bpp);
size_t upload_size = width * height * bpp;
void *upload_data = data;
WGPUTextureFormat wgpu_format = convert_image_format(format);
int bpp = gpu_texture_format_size(format);
void *original_data = data;
#ifdef WITH_BC7
if (gpu_bc7_supported(width, height, format)) {
texture->format = GPU_TEXTURE_FORMAT_RGBA32_BC7;
wgpu_format = WGPUTextureFormat_BC7RGBAUnorm;
data = gpu_bc7_compress(data, width, height);
}
#endif
int aligned_bpr = bytes_per_row_align(width * bpp);
size_t upload_size = width * height * bpp;
void *upload_data = data;
#ifdef WITH_BC7
if (data != original_data) {
aligned_bpr = ((width + 3) / 4) * 16; // BC7ENC_BLOCK_SIZE
upload_size = (size_t)aligned_bpr * ((height + 3) / 4);
}
else
#endif
if (aligned_bpr != width * bpp) {
upload_size = (size_t)aligned_bpr * height;
upload_data = malloc(upload_size);
@@ -685,6 +702,11 @@ void gpu_texture_init_from_bytes(gpu_texture_t *texture, void *data, int width,
if (upload_data != data) {
free(upload_data);
}
#ifdef WITH_BC7
if (data != original_data) {
free(data);
}
#endif
WGPUTextureDescriptor image_info = {
.size = {(uint32_t)width, (uint32_t)height, 1},
@@ -800,7 +822,18 @@ char *gpu_device_name() {
return device_name;
}
bool gpu_raytrace_supported(void) { return false; }
bool gpu_bc7_supported(int width, int height, gpu_texture_format_t format) {
bool bc7_supported = false;
#ifdef WITH_BC7
bc7_supported = wgpuDeviceHasFeature(device, WGPUFeatureName_TextureCompressionBC);
#endif
return bc7_supported && format == GPU_TEXTURE_FORMAT_RGBA32 && width >= 2048 && height >= 2048 && (width & (width - 1)) == 0 &&
(height & (height - 1)) == 0;
}
bool gpu_raytrace_supported(void) {
return false;
}
void gpu_raytrace_pipeline_init(gpu_raytrace_pipeline_t *pipeline, void *shader, int shader_size, gpu_buffer_t *constant_buffer) {}
void gpu_raytrace_pipeline_destroy(gpu_raytrace_pipeline_t *pipeline) {}
void gpu_raytrace_acceleration_structure_init(gpu_acceleration_structure_t *accel) {}