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// Copyright 2021 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "VertexFormatUtils.h"
#include "Assert.h"
namespace dawn {
uint32_t VertexFormatNumComponents(wgpu::VertexFormat format) {
switch (format) {
case wgpu::VertexFormat::Uint8x4:
case wgpu::VertexFormat::Sint8x4:
case wgpu::VertexFormat::Unorm8x4:
case wgpu::VertexFormat::Snorm8x4:
case wgpu::VertexFormat::Uint16x4:
case wgpu::VertexFormat::Sint16x4:
case wgpu::VertexFormat::Unorm16x4:
case wgpu::VertexFormat::Snorm16x4:
case wgpu::VertexFormat::Float16x4:
case wgpu::VertexFormat::Float32x4:
case wgpu::VertexFormat::Uint32x4:
case wgpu::VertexFormat::Sint32x4:
return 4;
case wgpu::VertexFormat::Float32x3:
case wgpu::VertexFormat::Uint32x3:
case wgpu::VertexFormat::Sint32x3:
return 3;
case wgpu::VertexFormat::Uint8x2:
case wgpu::VertexFormat::Sint8x2:
case wgpu::VertexFormat::Unorm8x2:
case wgpu::VertexFormat::Snorm8x2:
case wgpu::VertexFormat::Uint16x2:
case wgpu::VertexFormat::Sint16x2:
case wgpu::VertexFormat::Unorm16x2:
case wgpu::VertexFormat::Snorm16x2:
case wgpu::VertexFormat::Float16x2:
case wgpu::VertexFormat::Float32x2:
case wgpu::VertexFormat::Uint32x2:
case wgpu::VertexFormat::Sint32x2:
return 2;
case wgpu::VertexFormat::Float32:
case wgpu::VertexFormat::Uint32:
case wgpu::VertexFormat::Sint32:
return 1;
case wgpu::VertexFormat::Undefined:
break;
}
UNREACHABLE();
}
size_t VertexFormatComponentSize(wgpu::VertexFormat format) {
switch (format) {
case wgpu::VertexFormat::Uint8x2:
case wgpu::VertexFormat::Uint8x4:
case wgpu::VertexFormat::Sint8x2:
case wgpu::VertexFormat::Sint8x4:
case wgpu::VertexFormat::Unorm8x2:
case wgpu::VertexFormat::Unorm8x4:
case wgpu::VertexFormat::Snorm8x2:
case wgpu::VertexFormat::Snorm8x4:
return sizeof(char);
case wgpu::VertexFormat::Uint16x2:
case wgpu::VertexFormat::Uint16x4:
case wgpu::VertexFormat::Unorm16x2:
case wgpu::VertexFormat::Unorm16x4:
case wgpu::VertexFormat::Sint16x2:
case wgpu::VertexFormat::Sint16x4:
case wgpu::VertexFormat::Snorm16x2:
case wgpu::VertexFormat::Snorm16x4:
case wgpu::VertexFormat::Float16x2:
case wgpu::VertexFormat::Float16x4:
return sizeof(uint16_t);
case wgpu::VertexFormat::Float32:
case wgpu::VertexFormat::Float32x2:
case wgpu::VertexFormat::Float32x3:
case wgpu::VertexFormat::Float32x4:
return sizeof(float);
case wgpu::VertexFormat::Uint32:
case wgpu::VertexFormat::Uint32x2:
case wgpu::VertexFormat::Uint32x3:
case wgpu::VertexFormat::Uint32x4:
case wgpu::VertexFormat::Sint32:
case wgpu::VertexFormat::Sint32x2:
case wgpu::VertexFormat::Sint32x3:
case wgpu::VertexFormat::Sint32x4:
return sizeof(int32_t);
case wgpu::VertexFormat::Undefined:
break;
}
UNREACHABLE();
}
size_t VertexFormatSize(wgpu::VertexFormat format) {
return VertexFormatNumComponents(format) * VertexFormatComponentSize(format);
}
const char* GetWGSLVertexFormatType(wgpu::VertexFormat format) {
switch (format) {
case wgpu::VertexFormat::Float32:
return "f32";
case wgpu::VertexFormat::Unorm8x2:
case wgpu::VertexFormat::Snorm8x2:
case wgpu::VertexFormat::Unorm16x2:
case wgpu::VertexFormat::Snorm16x2:
case wgpu::VertexFormat::Float16x2:
case wgpu::VertexFormat::Float32x2:
return "vec2<f32>";
case wgpu::VertexFormat::Float32x3:
return "vec3<f32>";
case wgpu::VertexFormat::Unorm8x4:
case wgpu::VertexFormat::Snorm8x4:
case wgpu::VertexFormat::Unorm16x4:
case wgpu::VertexFormat::Snorm16x4:
case wgpu::VertexFormat::Float16x4:
case wgpu::VertexFormat::Float32x4:
return "vec4<f32>";
case wgpu::VertexFormat::Uint32:
return "u32";
case wgpu::VertexFormat::Uint8x2:
case wgpu::VertexFormat::Uint16x2:
case wgpu::VertexFormat::Uint32x2:
return "vec2<u32>";
case wgpu::VertexFormat::Uint32x3:
return "vec3<u32>";
case wgpu::VertexFormat::Uint8x4:
case wgpu::VertexFormat::Uint16x4:
case wgpu::VertexFormat::Uint32x4:
return "vec4<u32>";
case wgpu::VertexFormat::Sint32:
return "i32";
case wgpu::VertexFormat::Sint8x2:
case wgpu::VertexFormat::Sint16x2:
case wgpu::VertexFormat::Sint32x2:
return "vec2<i32>";
case wgpu::VertexFormat::Sint32x3:
return "vec3<i32>";
case wgpu::VertexFormat::Sint8x4:
case wgpu::VertexFormat::Sint16x4:
case wgpu::VertexFormat::Sint32x4:
return "vec4<i32>";
case wgpu::VertexFormat::Undefined:
break;
}
UNREACHABLE();
}
} // namespace dawn