57552f52b2
This patch adds support for compilation and execution of GLSL compute shaders. This, along with a few systematic changes and fixes, enable realtime compositor functionality with the Metal backend on macOS. A number of GLSL source modifications have been made to add the required level of type explicitness, allowing all compilations to succeed. GLSL Compute shader compilation follows a similar path to Vertex/Fragment translation, with added support for shader atomics, shared memory blocks and barriers. Texture flags have also been updated to ensure correct read/write specification for textures used within the compositor pipeline. GPU command submission changes have also been made in the high level path, when Metal is used, to address command buffer time-outs caused by certain expensive compute shaders. Authored by Apple: Michael Parkin-White Ref T96261 Ref T99210 Reviewed By: fclem Maniphest Tasks: T99210, T96261 Differential Revision: https://developer.blender.org/D16990
91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
/** \file
|
|
* \ingroup gpu
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "BLI_vector.hh"
|
|
|
|
#include "gpu_backend.hh"
|
|
#include "mtl_capabilities.hh"
|
|
|
|
namespace blender::gpu {
|
|
|
|
class Batch;
|
|
class DrawList;
|
|
class FrameBuffer;
|
|
class QueryPool;
|
|
class Shader;
|
|
class UniformBuf;
|
|
class VertBuf;
|
|
class MTLContext;
|
|
|
|
class MTLBackend : public GPUBackend {
|
|
friend class MTLContext;
|
|
|
|
public:
|
|
/* Capabilities. */
|
|
static MTLCapabilities capabilities;
|
|
|
|
static MTLCapabilities &get_capabilities()
|
|
{
|
|
return MTLBackend::capabilities;
|
|
}
|
|
|
|
~MTLBackend()
|
|
{
|
|
MTLBackend::platform_exit();
|
|
}
|
|
|
|
void delete_resources() override
|
|
{
|
|
/* Delete any resources with context active. */
|
|
}
|
|
|
|
static bool metal_is_supported();
|
|
static MTLBackend *get()
|
|
{
|
|
return static_cast<MTLBackend *>(GPUBackend::get());
|
|
}
|
|
|
|
void samplers_update() override;
|
|
void compute_dispatch(int groups_x_len, int groups_y_len, int groups_z_len) override;
|
|
|
|
void compute_dispatch_indirect(StorageBuf *indirect_buf) override
|
|
{
|
|
/* Placeholder */
|
|
}
|
|
|
|
/* MTL Allocators need to be implemented in separate .mm files, due to allocation of Objective-C
|
|
* objects. */
|
|
Context *context_alloc(void *ghost_window, void *ghost_context) override;
|
|
Batch *batch_alloc() override;
|
|
DrawList *drawlist_alloc(int list_length) override;
|
|
Fence *fence_alloc() override;
|
|
FrameBuffer *framebuffer_alloc(const char *name) override;
|
|
IndexBuf *indexbuf_alloc() override;
|
|
PixelBuffer *pixelbuf_alloc(uint size) override;
|
|
QueryPool *querypool_alloc() override;
|
|
Shader *shader_alloc(const char *name) override;
|
|
Texture *texture_alloc(const char *name) override;
|
|
UniformBuf *uniformbuf_alloc(int size, const char *name) override;
|
|
StorageBuf *storagebuf_alloc(int size, GPUUsageType usage, const char *name) override;
|
|
VertBuf *vertbuf_alloc() override;
|
|
|
|
/* Render Frame Coordination. */
|
|
void render_begin() override;
|
|
void render_end() override;
|
|
void render_step() override;
|
|
bool is_inside_render_boundary();
|
|
|
|
private:
|
|
static void platform_init(MTLContext *ctx);
|
|
static void platform_exit();
|
|
|
|
static void capabilities_init(MTLContext *ctx);
|
|
};
|
|
|
|
} // namespace blender::gpu
|