Clément Foucault
c4f122ac8f
This is in preparation of vulkan backend. We move all opengl functionnalities behind an abstract class. This also cleansup the "dynamic" ubo create and rename it to `GPU_uniformbuf_from_list()` Contains, no functional change. Part of T68990 Vulkan support.
107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* Copyright 2020, Blender Foundation.
|
|
* All rights reserved.
|
|
*/
|
|
|
|
/** \file
|
|
* \ingroup gpu
|
|
*
|
|
* GPU geometry batch
|
|
* Contains VAOs + VBOs + Shader representing a drawable entity.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "MEM_guardedalloc.h"
|
|
|
|
#include "gpu_batch_private.hh"
|
|
|
|
#include "glew-mx.h"
|
|
|
|
namespace blender {
|
|
namespace gpu {
|
|
|
|
class GLContext;
|
|
class GLShaderInterface;
|
|
|
|
#define GPU_VAO_STATIC_LEN 3
|
|
|
|
/* Vao management: remembers all geometry state (vertex attribute bindings & element buffer)
|
|
* for each shader interface. Start with a static number of vaos and fallback to dynamic count
|
|
* if necessary. Once a batch goes dynamic it does not go back. */
|
|
class GLVaoCache {
|
|
private:
|
|
/** Context for which the vao_cache_ was generated. */
|
|
GLContext *context_ = NULL;
|
|
/** Last interface this batch was drawn with. */
|
|
GLShaderInterface *interface_ = NULL;
|
|
/** Cached vao for the last interface. */
|
|
GLuint vao_id_ = 0;
|
|
/** Used whend arb_base_instance is not supported. */
|
|
GLuint vao_base_instance_ = 0;
|
|
int base_instance_ = 0;
|
|
|
|
bool is_dynamic_vao_count = false;
|
|
union {
|
|
/** Static handle count */
|
|
struct {
|
|
const GLShaderInterface *interfaces[GPU_VAO_STATIC_LEN];
|
|
GLuint vao_ids[GPU_VAO_STATIC_LEN];
|
|
} static_vaos;
|
|
/** Dynamic handle count */
|
|
struct {
|
|
uint count;
|
|
const GLShaderInterface **interfaces;
|
|
GLuint *vao_ids;
|
|
} dynamic_vaos;
|
|
};
|
|
|
|
public:
|
|
GLVaoCache();
|
|
~GLVaoCache();
|
|
|
|
GLuint vao_get(GPUBatch *batch);
|
|
GLuint base_instance_vao_get(GPUBatch *batch, int i_first);
|
|
|
|
GLuint lookup(const GLShaderInterface *interface);
|
|
void insert(const GLShaderInterface *interface, GLuint vao_id);
|
|
void remove(const GLShaderInterface *interface);
|
|
void clear(void);
|
|
|
|
private:
|
|
void init(void);
|
|
void context_check(void);
|
|
};
|
|
|
|
class GLBatch : public Batch {
|
|
public:
|
|
/** All vaos corresponding to all the GPUShaderInterface this batch was drawn with. */
|
|
GLVaoCache vao_cache_;
|
|
|
|
public:
|
|
GLBatch();
|
|
~GLBatch();
|
|
|
|
void draw(int v_first, int v_count, int i_first, int i_count) override;
|
|
void bind(int i_first);
|
|
|
|
MEM_CXX_CLASS_ALLOC_FUNCS("GLBatch");
|
|
};
|
|
|
|
} // namespace gpu
|
|
} // namespace blender
|