Clément Foucault
d7df0dcccb
This uses a StorageBuf as the source of indirect dispatch argument. The user needs to make sure the parameters are in the right order. There is no support for argument offset for the moment as there is no need for it. But this might be added in the future. Note that the indirect buffer is synchronized at the backend level. This is done for practical reasons and because this feature is almost always used for GPU driven pipeline.
148 lines
3.1 KiB
C++
148 lines
3.1 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2020 Blender Foundation. All rights reserved. */
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/** \file
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* \ingroup gpu
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*/
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#pragma once
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#include "gpu_backend.hh"
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#include "BLI_vector.hh"
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#include "gl_batch.hh"
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#include "gl_compute.hh"
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#include "gl_context.hh"
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#include "gl_drawlist.hh"
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#include "gl_framebuffer.hh"
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#include "gl_index_buffer.hh"
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#include "gl_query.hh"
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#include "gl_shader.hh"
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#include "gl_storage_buffer.hh"
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#include "gl_texture.hh"
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#include "gl_uniform_buffer.hh"
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#include "gl_vertex_buffer.hh"
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namespace blender {
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namespace gpu {
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class GLBackend : public GPUBackend {
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private:
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GLSharedOrphanLists shared_orphan_list_;
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public:
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GLBackend()
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{
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/* platform_init needs to go first. */
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GLBackend::platform_init();
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GLBackend::capabilities_init();
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GLTexture::samplers_init();
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}
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~GLBackend()
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{
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GLTexture::samplers_free();
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GLBackend::platform_exit();
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}
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static GLBackend *get()
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{
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return static_cast<GLBackend *>(GPUBackend::get());
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}
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void samplers_update() override
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{
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GLTexture::samplers_update();
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};
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Context *context_alloc(void *ghost_window) override
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{
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return new GLContext(ghost_window, shared_orphan_list_);
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};
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Batch *batch_alloc() override
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{
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return new GLBatch();
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};
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DrawList *drawlist_alloc(int list_length) override
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{
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return new GLDrawList(list_length);
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};
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FrameBuffer *framebuffer_alloc(const char *name) override
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{
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return new GLFrameBuffer(name);
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};
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IndexBuf *indexbuf_alloc() override
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{
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return new GLIndexBuf();
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};
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QueryPool *querypool_alloc() override
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{
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return new GLQueryPool();
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};
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Shader *shader_alloc(const char *name) override
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{
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return new GLShader(name);
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};
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Texture *texture_alloc(const char *name) override
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{
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return new GLTexture(name);
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};
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UniformBuf *uniformbuf_alloc(int size, const char *name) override
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{
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return new GLUniformBuf(size, name);
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};
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StorageBuf *storagebuf_alloc(int size, GPUUsageType usage, const char *name) override
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{
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return new GLStorageBuf(size, usage, name);
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};
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VertBuf *vertbuf_alloc() override
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{
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return new GLVertBuf();
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};
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GLSharedOrphanLists &shared_orphan_list_get()
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{
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return shared_orphan_list_;
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};
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void compute_dispatch(int groups_x_len, int groups_y_len, int groups_z_len) override
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{
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GLContext::get()->state_manager_active_get()->apply_state();
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GLCompute::dispatch(groups_x_len, groups_y_len, groups_z_len);
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}
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void compute_dispatch_indirect(StorageBuf *indirect_buf) override
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{
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GLContext::get()->state_manager_active_get()->apply_state();
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dynamic_cast<GLStorageBuf *>(indirect_buf)->bind_as(GL_DISPATCH_INDIRECT_BUFFER);
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/* This barrier needs to be here as it only work on the currently bound indirect buffer. */
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glMemoryBarrier(GL_DRAW_INDIRECT_BUFFER);
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glDispatchComputeIndirect((GLintptr)0);
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/* Unbind. */
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glBindBuffer(GL_DRAW_INDIRECT_BUFFER, 0);
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}
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private:
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static void platform_init();
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static void platform_exit();
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static void capabilities_init();
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};
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} // namespace gpu
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} // namespace blender
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