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gpu: implement ShaderModule, Device.createShaderModule

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-03-08 22:36:04 -07:00 • committed by Stephen Gutekanst
parent 99744134f8
commit e9ea1e2531
5 changed files with 102 additions and 26 deletions
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57
gpu/src/NativeInstance.zig
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@ -18,6 +18,7 @@ const Surface = @import("Surface.zig");
const Limits = @import("Limits.zig");
const Queue = @import("Queue.zig");
const CommandBuffer = @import("CommandBuffer.zig");
const ShaderModule = @import("ShaderModule.zig");
const NativeInstance = @This();
@ -301,6 +302,41 @@ const device_vtable = Device.VTable{
return wrapQueue(c.wgpuDeviceGetQueue(@ptrCast(c.WGPUDevice, ptr)));
}
}).getQueue,
.createShaderModule = (struct {
pub fn createShaderModule(ptr: *anyopaque, descriptor: *const ShaderModule.Descriptor) ShaderModule {
switch (descriptor.code) {
.wgsl => |wgsl| {
const wgsl_desc = c.WGPUShaderModuleWGSLDescriptor{
.chain = c.WGPUChainedStruct{
.next = null,
.sType = c.WGPUSType_ShaderModuleWGSLDescriptor,
},
.source = wgsl,
};
const desc = c.WGPUShaderModuleDescriptor{
.nextInChain = @ptrCast(*const c.WGPUChainedStruct, &wgsl_desc),
.label = if (descriptor.label) |l| @ptrCast([*c]const u8, l) else null,
};
return wrapShaderModule(c.wgpuDeviceCreateShaderModule(@ptrCast(c.WGPUDevice, ptr), &desc));
},
.spirv => |spirv| {
const spirv_desc = c.WGPUShaderModuleSPIRVDescriptor{
.chain = c.WGPUChainedStruct{
.next = null,
.sType = c.WGPUSType_ShaderModuleSPIRVDescriptor,
},
.code = @ptrCast([*c]const u32, &spirv[0]),
.codeSize = @intCast(u32, spirv.len),
};
const desc = c.WGPUShaderModuleDescriptor{
.nextInChain = @ptrCast(*const c.WGPUChainedStruct, &spirv_desc),
.label = if (descriptor.label) |l| @ptrCast([*c]const u8, l) else null,
};
return wrapShaderModule(c.wgpuDeviceCreateShaderModule(@ptrCast(c.WGPUDevice, ptr), &desc));
},
}
}
}).createShaderModule,
};
// TODO: maybe make Limits an extern struct that can be cast?
@ -386,6 +422,26 @@ const queue_vtable = Queue.VTable{
}).submit,
};
fn wrapShaderModule(shader_module: c.WGPUShaderModule) ShaderModule {
return .{
.ptr = shader_module.?,
.vtable = &shader_module_vtable,
};
}
const shader_module_vtable = ShaderModule.VTable{
.reference = (struct {
pub fn reference(ptr: *anyopaque) void {
c.wgpuShaderModuleReference(@ptrCast(c.WGPUShaderModule, ptr));
}
}).reference,
.release = (struct {
pub fn release(ptr: *anyopaque) void {
c.wgpuShaderModuleRelease(@ptrCast(c.WGPUShaderModule, ptr));
}
}).release,
};
test "syntax" {
_ = wrap;
_ = interface_vtable;
@ -397,4 +453,5 @@ test "syntax" {
_ = device_vtable;
_ = convertLimits;
_ = wrapQueue;
_ = wrapShaderModule;
}