150 lines
4.2 KiB
C++
150 lines
4.2 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2020, Blender Foundation.
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* All rights reserved.
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*/
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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_context_private.hh"
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#include "GPU_framebuffer.h"
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#include "BLI_set.hh"
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#include "BLI_vector.hh"
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#include "gl_state.hh"
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#include "glew-mx.h"
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#include <mutex>
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namespace blender {
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namespace gpu {
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class GLVaoCache;
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class GLSharedOrphanLists {
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public:
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/** Mutex for the bellow structures. */
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std::mutex lists_mutex;
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/** Buffers and textures are shared across context. Any context can free them. */
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Vector<GLuint> textures;
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Vector<GLuint> buffers;
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public:
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void orphans_clear(void);
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};
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class GLContext : public Context {
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public:
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/** Capabilities. */
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static GLint max_cubemap_size;
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static GLint max_texture_3d_size;
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static GLint max_ubo_size;
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static GLint max_ubo_binds;
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/** Extensions. */
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static bool base_instance_support;
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static bool clear_texture_support;
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static bool copy_image_support;
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static bool debug_layer_support;
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static bool direct_state_access_support;
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static bool fixed_restart_index_support;
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static bool multi_bind_support;
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static bool multi_draw_indirect_support;
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static bool shader_draw_parameters_support;
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static bool texture_cube_map_array_support;
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static bool texture_filter_anisotropic_support;
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static bool texture_gather_support;
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static bool vertex_attrib_binding_support;
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/** Workarounds. */
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static bool debug_layer_workaround;
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static bool unused_fb_slot_workaround;
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static float derivative_signs[2];
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/** VBO for missing vertex attrib binding. Avoid undefined behavior on some implementation. */
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GLuint default_attr_vbo_;
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/** Used for debugging purpose. Bitflags of all bound slots. */
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uint16_t bound_ubo_slots;
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private:
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/**
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* GPUBatch & GPUFramebuffer have references to the context they are from, in the case the
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* context is destroyed, we need to remove any reference to it.
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*/
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Set<GLVaoCache *> vao_caches_;
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Set<GPUFrameBuffer *> framebuffers_;
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/** Mutex for the bellow structures. */
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std::mutex lists_mutex_;
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/** VertexArrays and framebuffers are not shared across context. */
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Vector<GLuint> orphaned_vertarrays_;
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Vector<GLuint> orphaned_framebuffers_;
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/** GLBackend onws this data. */
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GLSharedOrphanLists &shared_orphan_list_;
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public:
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GLContext(void *ghost_window, GLSharedOrphanLists &shared_orphan_list);
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~GLContext();
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static void check_error(const char *info);
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void activate(void) override;
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void deactivate(void) override;
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void flush(void) override;
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void finish(void) override;
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void memory_statistics_get(int *total_mem, int *free_mem) override;
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static GLContext *get()
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{
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return static_cast<GLContext *>(Context::get());
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}
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static GLStateManager *state_manager_active_get()
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{
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GLContext *ctx = GLContext::get();
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return static_cast<GLStateManager *>(ctx->state_manager);
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};
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/* These need to be called with the context the id was created with. */
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void vao_free(GLuint vao_id);
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void fbo_free(GLuint fbo_id);
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/* These can be called by any threads even without OpenGL ctx. Deletion will be delayed. */
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static void buf_free(GLuint buf_id);
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static void tex_free(GLuint tex_id);
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void vao_cache_register(GLVaoCache *cache);
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void vao_cache_unregister(GLVaoCache *cache);
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void debug_group_begin(const char *name, int index) override;
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void debug_group_end(void) override;
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private:
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static void orphans_add(Vector<GLuint> &orphan_list, std::mutex &list_mutex, GLuint id);
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void orphans_clear(void);
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MEM_CXX_CLASS_ALLOC_FUNCS("GLContext")
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};
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} // namespace gpu
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} // namespace blender
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