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/*
* Copyright 2021 Blender Foundation
*
* 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.
*/
// clang-format off
/* Open the Metal kernel context class
* Necessary to access resource bindings */
class MetalKernelContext {
public:
constant KernelParamsMetal &launch_params_metal;
constant MetalAncillaries *metal_ancillaries;
MetalKernelContext(constant KernelParamsMetal &_launch_params_metal, constant MetalAncillaries * _metal_ancillaries)
: launch_params_metal(_launch_params_metal), metal_ancillaries(_metal_ancillaries)
{}
MetalKernelContext(constant KernelParamsMetal &_launch_params_metal)
: launch_params_metal(_launch_params_metal)
{}
/* texture fetch adapter functions */
typedef uint64_t ccl_gpu_tex_object;
template<typename T>
inline __attribute__((__always_inline__))
T ccl_gpu_tex_object_read_2D(ccl_gpu_tex_object tex, float x, float y) const {
kernel_assert(0);
return 0;
}
template<typename T>
inline __attribute__((__always_inline__))
T ccl_gpu_tex_object_read_3D(ccl_gpu_tex_object tex, float x, float y, float z) const {
kernel_assert(0);
return 0;
}
// texture2d
template<>
inline __attribute__((__always_inline__))
float4 ccl_gpu_tex_object_read_2D(ccl_gpu_tex_object tex, float x, float y) const {
const uint tid(tex);
const uint sid(tex >> 32);
return metal_ancillaries->textures_2d[tid].tex.sample(metal_samplers[sid], float2(x, y));
}
template<>
inline __attribute__((__always_inline__))
float ccl_gpu_tex_object_read_2D(ccl_gpu_tex_object tex, float x, float y) const {
const uint tid(tex);
const uint sid(tex >> 32);
return metal_ancillaries->textures_2d[tid].tex.sample(metal_samplers[sid], float2(x, y)).x;
}
// texture3d
template<>
inline __attribute__((__always_inline__))
float4 ccl_gpu_tex_object_read_3D(ccl_gpu_tex_object tex, float x, float y, float z) const {
const uint tid(tex);
const uint sid(tex >> 32);
return metal_ancillaries->textures_3d[tid].tex.sample(metal_samplers[sid], float3(x, y, z));
}
template<>
inline __attribute__((__always_inline__))
float ccl_gpu_tex_object_read_3D(ccl_gpu_tex_object tex, float x, float y, float z) const {
const uint tid(tex);
const uint sid(tex >> 32);
return metal_ancillaries->textures_3d[tid].tex.sample(metal_samplers[sid], float3(x, y, z)).x;
}
# include "kernel/device/gpu/image.h"
// clang-format on
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