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armorpaint/base/sources/backends/webgpu_gpu.c
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luboslenco 30cac3ad5a wasm: make paint compile
2026-01-30 00:01:00 +01:00

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#include "webgpu_gpu.h"
#include <iron_gpu.h>
#include <iron_math.h>
#include <iron_system.h>
#include <memory.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
bool gpu_transpose_mat = true;
extern int constant_buffer_index;
static gpu_buffer_t *current_vb;
static gpu_buffer_t *current_ib;
static WGPUBindGroupLayout descriptor_layout;
static WGPUSampler linear_sampler;
static WGPUSampler point_sampler;
static bool linear_sampling = true;
static WGPUCommandEncoder command_encoder;
static WGPURenderPassEncoder render_pass_encoder;
static char device_name[256];
static WGPUInstance instance;
static WGPUAdapter gpu = NULL;
static WGPUDevice device = NULL;
static WGPUQueue queue;
static int window_depth_bits;
static bool window_vsync;
static WGPUSurface surface;
static WGPUTextureFormat surface_format;
static uint32_t framebuffer_count = 1;
static bool framebuffer_acquired = false;
static WGPUBuffer readback_buffer;
static int readback_buffer_size = 0;
static WGPUBuffer upload_buffer;
static int upload_buffer_size = 0;
static WGPUTexture dummy_texture;
static WGPUTextureView dummy_view;
static int current_width = 0;
static int current_height = 0;
static WGPURenderPassColorAttachment current_color_attachment_infos[8];
static WGPURenderPassDepthStencilAttachment current_depth_attachment_info;
static WGPUTextureFormat convert_image_format(gpu_texture_format_t format) {
switch (format) {
case GPU_TEXTURE_FORMAT_RGBA128:
return WGPUTextureFormat_RGBA32Float;
case GPU_TEXTURE_FORMAT_RGBA64:
return WGPUTextureFormat_RGBA16Float;
case GPU_TEXTURE_FORMAT_R8:
return WGPUTextureFormat_R8Unorm;
case GPU_TEXTURE_FORMAT_R16:
return WGPUTextureFormat_R16Float;
case GPU_TEXTURE_FORMAT_R32:
return WGPUTextureFormat_R32Float;
case GPU_TEXTURE_FORMAT_D32:
return WGPUTextureFormat_Depth32Float;
default:
return WGPUTextureFormat_RGBA8Unorm;
}
}
static WGPUCullMode convert_cull_mode(gpu_cull_mode_t cull_mode) {
switch (cull_mode) {
case GPU_CULL_MODE_CLOCKWISE:
return WGPUCullMode_Back;
case GPU_CULL_MODE_COUNTER_CLOCKWISE:
return WGPUCullMode_Front;
default:
return WGPUCullMode_None;
}
}
static WGPUCompareFunction convert_compare_mode(gpu_compare_mode_t compare) {
switch (compare) {
default:
case GPU_COMPARE_MODE_ALWAYS:
return WGPUCompareFunction_Always;
case GPU_COMPARE_MODE_NEVER:
return WGPUCompareFunction_Never;
case GPU_COMPARE_MODE_EQUAL:
return WGPUCompareFunction_Equal;
case GPU_COMPARE_MODE_LESS:
return WGPUCompareFunction_Less;
}
}
static WGPUBlendFactor convert_blend_factor(gpu_blend_t factor) {
switch (factor) {
case GPU_BLEND_ONE:
return WGPUBlendFactor_One;
case GPU_BLEND_ZERO:
return WGPUBlendFactor_Zero;
case GPU_BLEND_SOURCE_ALPHA:
return WGPUBlendFactor_SrcAlpha;
case GPU_BLEND_DEST_ALPHA:
return WGPUBlendFactor_DstAlpha;
case GPU_BLEND_INV_SOURCE_ALPHA:
return WGPUBlendFactor_OneMinusSrcAlpha;
case GPU_BLEND_INV_DEST_ALPHA:
return WGPUBlendFactor_OneMinusDstAlpha;
default:
return WGPUBlendFactor_One;
}
}
static int bytes_per_row_align(int bpr) {
return (bpr + 255) & ~255;
}
static void create_descriptors(void) {
WGPUBindGroupLayoutEntry bindings[18];
memset(bindings, 0, sizeof(bindings));
bindings[0].binding = 0;
bindings[0].visibility = WGPUShaderStage_Vertex | WGPUShaderStage_Fragment;
bindings[0].buffer.type = WGPUBufferBindingType_Uniform;
bindings[0].buffer.hasDynamicOffset = true;
bindings[0].buffer.minBindingSize = 0;
bindings[1].binding = 1;
bindings[1].visibility = WGPUShaderStage_Vertex | WGPUShaderStage_Fragment;
bindings[1].sampler.type = WGPUSamplerBindingType_Filtering;
for (int i = 0; i < GPU_MAX_TEXTURES; ++i) {
bindings[2 + i].binding = 2 + i;
bindings[2 + i].visibility = WGPUShaderStage_Vertex | WGPUShaderStage_Fragment;
bindings[2 + i].texture.sampleType = WGPUTextureSampleType_Float;
bindings[2 + i].texture.viewDimension = WGPUTextureViewDimension_2D;
bindings[2 + i].texture.multisampled = false;
}
WGPUBindGroupLayoutDescriptor layout_create_info = {
.entryCount = 2 + GPU_MAX_TEXTURES,
.entries = bindings,
};
descriptor_layout = wgpuDeviceCreateBindGroupLayout(device, &layout_create_info);
WGPUTextureDescriptor dummy_desc = {
.size = {1, 1, 1},
.mipLevelCount = 1,
.sampleCount = 1,
.dimension = WGPUTextureDimension_2D,
.format = WGPUTextureFormat_RGBA8Unorm,
.usage = WGPUTextureUsage_TextureBinding | WGPUTextureUsage_CopyDst,
};
dummy_texture = wgpuDeviceCreateTexture(device, &dummy_desc);
WGPUTextureViewDescriptor dummy_view_desc = {
.dimension = WGPUTextureViewDimension_2D,
.format = WGPUTextureFormat_RGBA8Unorm,
.mipLevelCount = 1,
.arrayLayerCount = 1,
.aspect = WGPUTextureAspect_All,
};
dummy_view = wgpuTextureCreateView(dummy_texture, &dummy_view_desc);
uint8_t white[4] = {255, 255, 255, 255};
WGPUBufferDescriptor dummy_upload_desc = {.size = 4, .usage = WGPUBufferUsage_CopySrc, .mappedAtCreation = true};
WGPUBuffer dummy_upload = wgpuDeviceCreateBuffer(device, &dummy_upload_desc);
memcpy(wgpuBufferGetMappedRange(dummy_upload, 0, 4), white, 4);
wgpuBufferUnmap(dummy_upload);
WGPUCommandEncoder dummy_encoder = wgpuDeviceCreateCommandEncoder(device, NULL);
WGPUTexelCopyBufferInfo src = {.layout = {.bytesPerRow = bytes_per_row_align(4), .rowsPerImage = 1}, .buffer = dummy_upload};
WGPUTexelCopyTextureInfo dst = {.texture = dummy_texture};
WGPUExtent3D extent = {1, 1, 1};
wgpuCommandEncoderCopyBufferToTexture(dummy_encoder, &src, &dst, &extent);
WGPUCommandBuffer dummy_cmd = wgpuCommandEncoderFinish(dummy_encoder, NULL);
wgpuQueueSubmit(queue, 1, &dummy_cmd);
wgpuBufferRelease(dummy_upload);
WGPUSamplerDescriptor sampler_info = {
.addressModeU = WGPUAddressMode_Repeat,
.addressModeV = WGPUAddressMode_Repeat,
.addressModeW = WGPUAddressMode_Repeat,
.magFilter = WGPUFilterMode_Linear,
.minFilter = WGPUFilterMode_Linear,
.mipmapFilter = WGPUMipmapFilterMode_Linear,
.maxAnisotropy = 1,
};
linear_sampler = wgpuDeviceCreateSampler(device, &sampler_info);
sampler_info.magFilter = WGPUFilterMode_Nearest;
sampler_info.minFilter = WGPUFilterMode_Nearest;
sampler_info.mipmapFilter = WGPUMipmapFilterMode_Nearest;
point_sampler = wgpuDeviceCreateSampler(device, &sampler_info);
}
void gpu_barrier(gpu_texture_t *render_target, gpu_texture_state_t state_after) {}
void gpu_render_target_init2(gpu_texture_t *target, int width, int height, gpu_texture_format_t format, int framebuffer_index) {
target->width = width;
target->height = height;
target->format = format;
target->state = (framebuffer_index >= 0) ? GPU_TEXTURE_STATE_PRESENT : GPU_TEXTURE_STATE_SHADER_RESOURCE;
if (framebuffer_index >= 0) {
return;
}
WGPUTextureFormat wgpu_format = convert_image_format(format);
WGPUTextureUsage usage = WGPUTextureUsage_TextureBinding | WGPUTextureUsage_RenderAttachment | WGPUTextureUsage_CopySrc;
if (format == GPU_TEXTURE_FORMAT_D32) {
usage = WGPUTextureUsage_TextureBinding | WGPUTextureUsage_RenderAttachment;
}
WGPUTextureDescriptor image = {
.size = {(uint32_t)width, (uint32_t)height, 1},
.mipLevelCount = 1,
.sampleCount = 1,
.dimension = WGPUTextureDimension_2D,
.format = wgpu_format,
.usage = usage,
};
target->impl.texture = wgpuDeviceCreateTexture(device, &image);
WGPUTextureViewDescriptor view_desc = {
.dimension = WGPUTextureViewDimension_2D,
.format = wgpu_format,
.mipLevelCount = 1,
.arrayLayerCount = 1,
.aspect = format == GPU_TEXTURE_FORMAT_D32 ? WGPUTextureAspect_DepthOnly : WGPUTextureAspect_All,
};
target->impl.view = wgpuTextureCreateView(target->impl.texture, &view_desc);
}
static void create_swapchain() {
uint32_t width = iron_window_width();
uint32_t height = iron_window_height();
current_width = width;
current_height = height;
WGPUSurfaceConfiguration swapchain_info = {
.device = device,
.format = surface_format,
.usage = WGPUTextureUsage_RenderAttachment,
.viewFormatCount = 1,
.viewFormats = &surface_format,
.alphaMode = WGPUCompositeAlphaMode_Opaque,
.width = width,
.height = height,
.presentMode = window_vsync ? WGPUPresentMode_Fifo : WGPUPresentMode_Mailbox,
};
wgpuSurfaceConfigure(surface, &swapchain_info);
framebuffer_index = 0;
if (window_depth_bits > 0) {
gpu_render_target_init2(&framebuffer_depth, width, height, GPU_TEXTURE_FORMAT_D32, -1);
}
}
void gpu_resize_internal(int width, int height) {}
// static void adapter_request_callback(WGPURequestAdapterStatus status, WGPUAdapter adapter, WGPUStringView message, void *userdata1, void *userdata2) {
// *(WGPUAdapter *)userdata1 = adapter;
// }
// static void device_request_callback(WGPURequestDeviceStatus status, WGPUDevice dev, WGPUStringView message, void *userdata1, void *userdata2) {
// *(WGPUDevice *)userdata1 = dev;
// }
void gpu_init_internal(int depth_buffer_bits, bool vsync) {
instance = wgpuCreateInstance(NULL);
window_depth_bits = depth_buffer_bits;
window_vsync = vsync;
// WGPURequestAdapterOptions options = {.compatibleSurface = surface, .powerPreference = WGPUPowerPreference_HighPerformance};
// WGPURequestAdapterCallbackInfo adapter_cbi = {.callback = adapter_request_callback, .userdata1 = &gpu};
// wgpuInstanceRequestAdapter(instance, &options, adapter_cbi);
// while (gpu == NULL) {
// sleep(10);
// }
gpu = wgpuInstanceRequestAdapterSync();
// WGPUAdapterInfo props = {0};
// wgpuAdapterGetInfo(gpu, &props);
// if (props.device) {
// strncpy(device_name, props.device, sizeof(device_name) - 1);
// device_name[sizeof(device_name) - 1] = '\0';
// }
// wgpuAdapterInfoFreeMembers(props);
// WGPUDeviceDescriptor deviceinfo = {0};
// WGPURequestDeviceCallbackInfo device_cbi = {.callback = device_request_callback, .userdata1 = &device};
// wgpuAdapterRequestDevice(gpu, &deviceinfo, device_cbi);
// while (device == NULL) {
// sleep(10);
// }
device = wgpuAdapterRequestDeviceSync();
queue = wgpuDeviceGetQueue(device);
create_descriptors();
// WGPUSurfaceCapabilities caps = {0};
// wgpuSurfaceGetCapabilities(surface, gpu, &caps);
// surface_format = caps.formats[0];
// wgpuSurfaceCapabilitiesFreeMembers(caps);
surface_format = WGPUTextureFormat_RGBA8Unorm;
gpu_create_framebuffers(depth_buffer_bits);
create_swapchain();
}
void gpu_destroy() {
if (readback_buffer_size > 0) {
wgpuBufferDestroy(readback_buffer);
wgpuBufferRelease(readback_buffer);
}
// wgpuSurfaceUnconfigure(surface);
// wgpuSurfaceRelease(surface);
// wgpuDeviceRelease(device);
// wgpuAdapterRelease(gpu);
// wgpuInstanceRelease(instance);
}
void gpu_begin_internal(gpu_clear_t flags, unsigned color, float depth) {
int width = iron_window_width();
int height = iron_window_height();
if (width != current_width || height != current_height) {
create_swapchain();
}
WGPUSurfaceTexture surface_texture;
wgpuSurfaceGetCurrentTexture(surface, &surface_texture);
framebuffers[0].impl.texture = surface_texture.texture;
WGPUTextureViewDescriptor view_info = {
.dimension = WGPUTextureViewDimension_2D,
.format = WGPUTextureFormat_RGBA8Unorm,
.mipLevelCount = 1,
.arrayLayerCount = 1,
};
framebuffers[0].impl.view = wgpuTextureCreateView(surface_texture.texture, &view_info);
framebuffers[0].width = width;
framebuffers[0].height = height;
framebuffer_acquired = true;
command_encoder = wgpuDeviceCreateCommandEncoder(device, NULL);
gpu_texture_t *target = current_render_targets[0];
WGPUColor clear_value = {
.r = ((color & 0x00ff0000) >> 16) / 255.0,
.g = ((color & 0x0000ff00) >> 8) / 255.0,
.b = ((color & 0x000000ff)) / 255.0,
.a = ((color & 0xff000000) >> 24) / 255.0,
};
for (size_t i = 0; i < current_render_targets_count; ++i) {
current_color_attachment_infos[i].view = current_render_targets[i]->impl.view;
current_color_attachment_infos[i].loadOp = (flags & GPU_CLEAR_COLOR) ? WGPULoadOp_Clear : WGPULoadOp_Load;
current_color_attachment_infos[i].storeOp = WGPUStoreOp_Store;
current_color_attachment_infos[i].clearValue = clear_value;
}
if (current_depth_buffer != NULL) {
current_depth_attachment_info.view = current_depth_buffer->impl.view;
current_depth_attachment_info.depthLoadOp = (flags & GPU_CLEAR_DEPTH) ? WGPULoadOp_Clear : WGPULoadOp_Load;
current_depth_attachment_info.depthStoreOp = WGPUStoreOp_Store;
current_depth_attachment_info.depthClearValue = depth;
}
WGPURenderPassDescriptor render_pass_desc = {
.colorAttachmentCount = (uint32_t)current_render_targets_count,
.colorAttachments = current_color_attachment_infos,
.depthStencilAttachment = current_depth_buffer ? &current_depth_attachment_info : NULL,
};
render_pass_encoder = wgpuCommandEncoderBeginRenderPass(command_encoder, &render_pass_desc);
gpu_viewport(0, 0, target->width, target->height);
gpu_scissor(0, 0, target->width, target->height);
}
void gpu_end_internal() {
wgpuRenderPassEncoderEnd(render_pass_encoder);
wgpuRenderPassEncoderRelease(render_pass_encoder);
render_pass_encoder = NULL;
}
void gpu_execute_and_wait() {
WGPUCommandBuffer command_buffer = wgpuCommandEncoderFinish(command_encoder, NULL);
wgpuQueueSubmit(queue, 1, &command_buffer);
wgpuCommandBufferRelease(command_buffer);
wgpuCommandEncoderRelease(command_encoder);
command_encoder = wgpuDeviceCreateCommandEncoder(device, NULL);
}
void gpu_present_internal() {
WGPUCommandBuffer command_buffer = wgpuCommandEncoderFinish(command_encoder, NULL);
wgpuQueueSubmit(queue, 1, &command_buffer);
wgpuCommandBufferRelease(command_buffer);
wgpuSurfacePresent(surface);
wgpuCommandEncoderRelease(command_encoder);
command_encoder = NULL;
framebuffer_acquired = false;
}
void gpu_draw_internal() {
wgpuRenderPassEncoderDrawIndexed(render_pass_encoder, current_ib->count, 1, 0, 0, 0);
}
void gpu_viewport(int x, int y, int width, int height) {
wgpuRenderPassEncoderSetViewport(render_pass_encoder, (float)x, (float)y, (float)width, (float)height, 0.0f, 1.0f);
}
void gpu_scissor(int x, int y, int width, int height) {
wgpuRenderPassEncoderSetScissorRect(render_pass_encoder, (uint32_t)x, (uint32_t)y, (uint32_t)width, (uint32_t)height);
}
void gpu_disable_scissor() {
gpu_scissor(0, 0, current_render_targets[0]->width, current_render_targets[0]->height);
}
void gpu_set_pipeline_internal(gpu_pipeline_t *pipeline) {
for (int i = 0; i < GPU_MAX_TEXTURES; ++i) {
current_textures[i] = NULL;
}
current_pipeline = pipeline;
wgpuRenderPassEncoderSetPipeline(render_pass_encoder, current_pipeline->impl.pipeline);
}
void gpu_set_vertex_buffer(gpu_buffer_t *buffer) {
current_vb = buffer;
wgpuRenderPassEncoderSetVertexBuffer(render_pass_encoder, 0, buffer->impl.buf, 0, buffer->count * buffer->stride);
}
void gpu_set_index_buffer(gpu_buffer_t *buffer) {
current_ib = buffer;
wgpuRenderPassEncoderSetIndexBuffer(render_pass_encoder, buffer->impl.buf, WGPUIndexFormat_Uint32, 0, buffer->count * buffer->stride);
}
void gpu_get_render_target_pixels(gpu_texture_t *render_target, uint8_t *data) {
int buffer_size = render_target->width * render_target->height * gpu_texture_format_size(render_target->format);
int new_readback_buffer_size = buffer_size > (2048 * 2048 * 4) ? buffer_size : (2048 * 2048 * 4);
if (readback_buffer_size < new_readback_buffer_size) {
if (readback_buffer_size > 0) {
wgpuBufferDestroy(readback_buffer);
wgpuBufferRelease(readback_buffer);
}
readback_buffer_size = new_readback_buffer_size;
WGPUBufferDescriptor readback_desc = {
.size = readback_buffer_size,
.usage = WGPUBufferUsage_CopyDst | WGPUBufferUsage_MapRead,
};
readback_buffer = wgpuDeviceCreateBuffer(device, &readback_desc);
}
WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(device, NULL);
WGPUTexelCopyTextureInfo src = {.texture = render_target->impl.texture};
WGPUTexelCopyBufferInfo dst = {.layout = {.bytesPerRow = bytes_per_row_align(render_target->width * gpu_texture_format_size(render_target->format)),
.rowsPerImage = render_target->height},
.buffer = readback_buffer};
WGPUExtent3D extent = {(uint32_t)render_target->width, (uint32_t)render_target->height, 1};
// wgpuCommandEncoderCopyTextureToBuffer(encoder, &src, &dst, &extent);
WGPUCommandBuffer cmd = wgpuCommandEncoderFinish(encoder, NULL);
wgpuQueueSubmit(queue, 1, &cmd);
wgpuCommandBufferRelease(cmd);
wgpuCommandEncoderRelease(encoder);
// memcpy(data, wgpuBufferGetConstMappedRange(readback_buffer, 0, buffer_size), buffer_size);
wgpuBufferUnmap(readback_buffer);
}
static WGPUBindGroup get_descriptor_set(WGPUBuffer buffer) {
WGPUBindGroupEntry entries[18];
memset(entries, 0, sizeof(entries));
int entry_count = 0;
entries[entry_count].binding = 0;
entries[entry_count].buffer = buffer;
entries[entry_count].offset = 0;
entries[entry_count].size = GPU_CONSTANT_BUFFER_SIZE;
entry_count++;
entries[entry_count].binding = 1;
entries[entry_count].sampler = linear_sampling ? linear_sampler : point_sampler;
entry_count++;
for (int i = 0; i < GPU_MAX_TEXTURES; ++i) {
entries[entry_count].binding = 2 + i;
entries[entry_count].textureView = current_textures[i] ? current_textures[i]->impl.view : dummy_view;
entry_count++;
}
WGPUBindGroupDescriptor desc = {
.layout = descriptor_layout,
.entryCount = entry_count,
.entries = entries,
};
return wgpuDeviceCreateBindGroup(device, &desc);
}
void gpu_set_constant_buffer(gpu_buffer_t *buffer, int offset, size_t size) {
WGPUBindGroup bind_group = get_descriptor_set(buffer->impl.buf);
uint32_t offsets[1] = {(uint32_t)offset};
wgpuRenderPassEncoderSetBindGroup(render_pass_encoder, 0, bind_group, 1, offsets);
wgpuBindGroupRelease(bind_group);
}
void gpu_set_texture(int unit, gpu_texture_t *texture) {
current_textures[unit] = texture;
}
void gpu_use_linear_sampling(bool b) {
linear_sampling = b;
}
void gpu_pipeline_destroy_internal(gpu_pipeline_t *pipeline) {
wgpuRenderPipelineRelease(pipeline->impl.pipeline);
wgpuPipelineLayoutRelease(pipeline->impl.pipeline_layout);
}
static WGPUShaderModule create_shader_module(const void *code, size_t size) {
WGPUShaderSourceWGSL wgsl_desc = {
.chain.sType = WGPUSType_ShaderSourceWGSL,
.code = {.data = code, .length = size},
};
WGPUShaderModuleDescriptor module_desc = {.nextInChain = (WGPUChainedStruct *)&wgsl_desc};
return wgpuDeviceCreateShaderModule(device, &module_desc);
}
void gpu_pipeline_compile(gpu_pipeline_t *pipeline) {
WGPUPipelineLayoutDescriptor pipeline_layout_create_info = {
.bindGroupLayoutCount = 1,
.bindGroupLayouts = &descriptor_layout,
};
pipeline->impl.pipeline_layout = wgpuDeviceCreatePipelineLayout(device, &pipeline_layout_create_info);
WGPURenderPipelineDescriptor pipeline_desc = {0};
pipeline_desc.layout = pipeline->impl.pipeline_layout;
pipeline_desc.primitive.topology = WGPUPrimitiveTopology_TriangleList;
pipeline_desc.primitive.frontFace = WGPUFrontFace_CCW;
pipeline_desc.primitive.cullMode = convert_cull_mode(pipeline->cull_mode);
pipeline_desc.multisample.count = 1;
pipeline_desc.multisample.mask = ~0u;
WGPUDepthStencilState ds_state = {
.format = WGPUTextureFormat_Depth32Float,
.depthWriteEnabled = pipeline->depth_write,
.depthCompare = convert_compare_mode(pipeline->depth_mode),
};
pipeline_desc.depthStencil = &ds_state;
WGPUColorTargetState color_targets[8];
for (int i = 0; i < pipeline->color_attachment_count; ++i) {
color_targets[i].format = convert_image_format(pipeline->color_attachment[i]);
color_targets[i].writeMask =
(pipeline->color_write_mask_red[i] ? WGPUColorWriteMask_Red : 0) | (pipeline->color_write_mask_green[i] ? WGPUColorWriteMask_Green : 0) |
(pipeline->color_write_mask_blue[i] ? WGPUColorWriteMask_Blue : 0) | (pipeline->color_write_mask_alpha[i] ? WGPUColorWriteMask_Alpha : 0);
if (pipeline->blend_source != GPU_BLEND_ONE || pipeline->blend_destination != GPU_BLEND_ZERO || pipeline->alpha_blend_source != GPU_BLEND_ONE ||
pipeline->alpha_blend_destination != GPU_BLEND_ZERO) {
color_targets[i].blend = &(WGPUBlendState){
.color = {.srcFactor = convert_blend_factor(pipeline->blend_source),
.dstFactor = convert_blend_factor(pipeline->blend_destination),
.operation = WGPUBlendOperation_Add},
.alpha = {.srcFactor = convert_blend_factor(pipeline->alpha_blend_source),
.dstFactor = convert_blend_factor(pipeline->alpha_blend_destination),
.operation = WGPUBlendOperation_Add},
};
}
}
pipeline_desc.fragment = &(WGPUFragmentState){
.module = create_shader_module(pipeline->fragment_shader->impl.source, pipeline->fragment_shader->impl.length),
.entryPoint = "main",
.targetCount = pipeline->color_attachment_count,
.targets = color_targets,
};
WGPUVertexBufferLayout vi_buffer = {0};
vi_buffer.arrayStride = 0;
vi_buffer.attributeCount = pipeline->input_layout->size;
WGPUVertexAttribute vi_attrs[16];
uint32_t offset = 0;
for (int i = 0; i < pipeline->input_layout->size; ++i) {
gpu_vertex_element_t element = pipeline->input_layout->elements[i];
vi_attrs[i].shaderLocation = i;
vi_attrs[i].offset = offset;
offset += gpu_vertex_data_size(element.data);
vi_buffer.arrayStride += gpu_vertex_data_size(element.data);
switch (element.data) {
case GPU_VERTEX_DATA_F32_1X:
vi_attrs[i].format = WGPUVertexFormat_Float32;
break;
case GPU_VERTEX_DATA_F32_2X:
vi_attrs[i].format = WGPUVertexFormat_Float32x2;
break;
case GPU_VERTEX_DATA_F32_3X:
vi_attrs[i].format = WGPUVertexFormat_Float32x3;
break;
case GPU_VERTEX_DATA_F32_4X:
vi_attrs[i].format = WGPUVertexFormat_Float32x4;
break;
case GPU_VERTEX_DATA_I16_2X_NORM:
vi_attrs[i].format = WGPUVertexFormat_Snorm16x2;
break;
case GPU_VERTEX_DATA_I16_4X_NORM:
vi_attrs[i].format = WGPUVertexFormat_Snorm16x4;
break;
}
}
vi_buffer.attributes = vi_attrs;
pipeline_desc.vertex = (WGPUVertexState){
.module = create_shader_module(pipeline->vertex_shader->impl.source, pipeline->vertex_shader->impl.length),
.entryPoint = "main",
.bufferCount = 1,
.buffers = &vi_buffer,
};
pipeline->impl.pipeline = wgpuDeviceCreateRenderPipeline(device, &pipeline_desc);
wgpuShaderModuleRelease(pipeline_desc.vertex.module);
wgpuShaderModuleRelease(pipeline_desc.fragment->module);
}
void gpu_shader_init(gpu_shader_t *shader, const void *source, size_t length, gpu_shader_type_t type) {
shader->impl.length = length;
shader->impl.source = malloc(length + 1);
memcpy(shader->impl.source, source, length);
((char *)shader->impl.source)[length] = '\0';
}
void gpu_shader_destroy(gpu_shader_t *shader) {
free(shader->impl.source);
shader->impl.source = NULL;
}
void gpu_texture_init_from_bytes(gpu_texture_t *texture, void *data, int width, int height, gpu_texture_format_t format) {
texture->width = width;
texture->height = height;
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;
if (aligned_bpr != width * bpp) {
upload_size = (size_t)aligned_bpr * height;
upload_data = malloc(upload_size);
for (int row = 0; row < height; ++row) {
memcpy((uint8_t *)upload_data + row * aligned_bpr, (uint8_t *)data + row * width * bpp, width * bpp);
}
}
int new_upload_buffer_size = upload_size > (1024 * 1024 * 4) ? upload_size : (1024 * 1024 * 4);
if (upload_buffer_size < new_upload_buffer_size) {
if (upload_buffer_size > 0) {
wgpuBufferDestroy(upload_buffer);
wgpuBufferRelease(upload_buffer);
}
upload_buffer_size = new_upload_buffer_size;
WGPUBufferDescriptor upload_desc = {
.size = upload_buffer_size,
.usage = WGPUBufferUsage_CopySrc | WGPUBufferUsage_CopyDst,
.mappedAtCreation = false,
};
upload_buffer = wgpuDeviceCreateBuffer(device, &upload_desc);
}
wgpuQueueWriteBuffer(queue, upload_buffer, 0, upload_data, upload_size);
if (upload_data != data) {
free(upload_data);
}
WGPUTextureDescriptor image_info = {
.size = {(uint32_t)width, (uint32_t)height, 1},
.mipLevelCount = 1,
.sampleCount = 1,
.dimension = WGPUTextureDimension_2D,
.format = wgpu_format,
.usage = WGPUTextureUsage_CopyDst | WGPUTextureUsage_TextureBinding,
};
texture->impl.texture = wgpuDeviceCreateTexture(device, &image_info);
WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(device, NULL);
WGPUTexelCopyBufferInfo src = {.layout = {.bytesPerRow = aligned_bpr, .rowsPerImage = height}, .buffer = upload_buffer};
WGPUTexelCopyTextureInfo dst = {.texture = texture->impl.texture};
WGPUExtent3D extent = {(uint32_t)width, (uint32_t)height, 1};
wgpuCommandEncoderCopyBufferToTexture(encoder, &src, &dst, &extent);
WGPUCommandBuffer cmd = wgpuCommandEncoderFinish(encoder, NULL);
wgpuQueueSubmit(queue, 1, &cmd);
wgpuCommandBufferRelease(cmd);
wgpuCommandEncoderRelease(encoder);
WGPUTextureViewDescriptor view_info = {
.dimension = WGPUTextureViewDimension_2D,
.format = wgpu_format,
.mipLevelCount = 1,
.arrayLayerCount = 1,
};
texture->impl.view = wgpuTextureCreateView(texture->impl.texture, &view_info);
}
void gpu_texture_destroy_internal(gpu_texture_t *target) {
wgpuTextureDestroy(target->impl.texture);
wgpuTextureRelease(target->impl.texture);
wgpuTextureViewRelease(target->impl.view);
}
void gpu_render_target_init(gpu_texture_t *target, int width, int height, gpu_texture_format_t format) {
gpu_render_target_init2(target, width, height, format, -1);
}
static void _gpu_buffer_copy(WGPUBuffer dest, WGPUBuffer source, uint32_t size) {
WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(device, NULL);
wgpuCommandEncoderCopyBufferToBuffer(encoder, source, 0, dest, 0, size);
WGPUCommandBuffer cmd = wgpuCommandEncoderFinish(encoder, NULL);
wgpuQueueSubmit(queue, 1, &cmd);
wgpuCommandBufferRelease(cmd);
wgpuCommandEncoderRelease(encoder);
}
void gpu_vertex_buffer_init(gpu_buffer_t *buffer, int count, gpu_vertex_structure_t *structure) {
buffer->count = count;
buffer->stride = 0;
for (int i = 0; i < structure->size; ++i) {
buffer->stride += gpu_vertex_data_size(structure->elements[i].data);
}
WGPUBufferDescriptor desc = {.size = buffer->count * buffer->stride, .usage = WGPUBufferUsage_Vertex, .mappedAtCreation = true};
buffer->impl.buf = wgpuDeviceCreateBuffer(device, &desc);
buffer->impl.mem = malloc(buffer->count * buffer->stride);
}
void *gpu_vertex_buffer_lock(gpu_buffer_t *buffer) {
return buffer->impl.mem;
}
void gpu_vertex_buffer_unlock(gpu_buffer_t *buffer) {
wgpuBufferUnmap2(buffer->impl.buf, buffer->impl.mem, 0, buffer->count * buffer->stride);
}
void gpu_index_buffer_init(gpu_buffer_t *buffer, int count) {
buffer->count = count;
buffer->stride = sizeof(uint32_t);
WGPUBufferDescriptor desc = {.size = buffer->count * buffer->stride, .usage = WGPUBufferUsage_Index, .mappedAtCreation = true};
buffer->impl.buf = wgpuDeviceCreateBuffer(device, &desc);
buffer->impl.mem = malloc(buffer->count * buffer->stride);
}
void *gpu_index_buffer_lock(gpu_buffer_t *buffer) {
return buffer->impl.mem;
}
void gpu_index_buffer_unlock(gpu_buffer_t *buffer) {
wgpuBufferUnmap2(buffer->impl.buf, buffer->impl.mem, 0, buffer->count * buffer->stride);
}
void gpu_constant_buffer_init(gpu_buffer_t *buffer, int size) {
buffer->count = size;
buffer->stride = 1;
WGPUBufferDescriptor desc = {.size = size, .usage = WGPUBufferUsage_Uniform | WGPUBufferUsage_CopyDst, .mappedAtCreation = false};
buffer->impl.buf = wgpuDeviceCreateBuffer(device, &desc);
buffer->impl.mem = malloc(buffer->count * buffer->stride);
}
void gpu_constant_buffer_lock(gpu_buffer_t *buffer, int start, int count) {
buffer->impl.start = start;
buffer->count = count;
buffer->data = &buffer->impl.mem[start];
}
void gpu_constant_buffer_unlock(gpu_buffer_t *buffer) {
wgpuQueueWriteBuffer(queue, buffer->impl.buf, buffer->impl.start, buffer->data, buffer->count);
buffer->data = NULL;
}
void gpu_buffer_destroy_internal(gpu_buffer_t *buffer) {
wgpuBufferDestroy(buffer->impl.buf);
wgpuBufferRelease(buffer->impl.buf);
}
char *gpu_device_name() {
return device_name;
}
bool gpu_raytrace_supported(void) { return false; }
void gpu_raytrace_pipeline_init(gpu_raytrace_pipeline_t *pipeline, void *ray_shader, int ray_shader_size, gpu_buffer_t *constant_buffer) {}
void gpu_raytrace_pipeline_destroy(gpu_raytrace_pipeline_t *pipeline) {}
void gpu_raytrace_acceleration_structure_init(gpu_raytrace_acceleration_structure_t *accel) {}
void gpu_raytrace_acceleration_structure_add(gpu_raytrace_acceleration_structure_t *accel, gpu_buffer_t *vb, gpu_buffer_t *ib, iron_matrix4x4_t transform) {}
void gpu_raytrace_acceleration_structure_build(gpu_raytrace_acceleration_structure_t *accel, gpu_buffer_t *_vb_full, gpu_buffer_t *_ib_full) {}
void gpu_raytrace_acceleration_structure_destroy(gpu_raytrace_acceleration_structure_t *accel) {}
void gpu_raytrace_set_textures(gpu_texture_t *texpaint0, gpu_texture_t *texpaint1, gpu_texture_t *texpaint2, gpu_texture_t *texenv, gpu_texture_t *texsobol,
gpu_texture_t *texscramble, gpu_texture_t *texrank) {}
void gpu_raytrace_set_acceleration_structure(gpu_raytrace_acceleration_structure_t *accel) {}
void gpu_raytrace_set_pipeline(gpu_raytrace_pipeline_t *pipeline) {}
void gpu_raytrace_set_target(gpu_texture_t *output) {}
void gpu_raytrace_dispatch_rays() {}
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