87055dc71b
With the compute pipeline calculation can be offloaded to the GPU. This patch only adds the framework for compute. So no changes for users at this moment. NOTE: As this is an OpenGL4.3 feature it must always have a fallback. Use `GPU_compute_shader_support` to check if compute pipeline can be used. Check `gpu_shader_compute*` test cases for usage. This patch also adds support for shader storage buffer objects and device only vertex/index buffers. An alternative that had been discussed was adding this to the `GPUBatch`, this was eventually not chosen as it would lead to more code when used as part of a shading group. The idea is that we add an `eDRWCommandType` in the near future. Reviewed By: fclem Differential Revision: https://developer.blender.org/D10913
132 lines
4.1 KiB
C++
132 lines
4.1 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.
|
|
*/
|
|
|
|
/** \file
|
|
* \ingroup gpu
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "MEM_guardedalloc.h"
|
|
|
|
#include "BLI_utildefines.h"
|
|
|
|
#include "gpu_state_private.hh"
|
|
|
|
#include "glew-mx.h"
|
|
|
|
namespace blender {
|
|
namespace gpu {
|
|
|
|
class GLFrameBuffer;
|
|
class GLTexture;
|
|
|
|
/**
|
|
* State manager keeping track of the draw state and applying it before drawing.
|
|
* Opengl Implementation.
|
|
*/
|
|
class GLStateManager : public StateManager {
|
|
public:
|
|
/** Another reference to the active frame-buffer. */
|
|
GLFrameBuffer *active_fb = nullptr;
|
|
|
|
private:
|
|
/** Current state of the GL implementation. Avoids resetting the whole state for every change. */
|
|
GPUState current_;
|
|
GPUStateMutable current_mutable_;
|
|
/** Limits. */
|
|
float line_width_range_[2];
|
|
|
|
/** Texture state:
|
|
* We keep the full stack of textures and sampler bounds to use multi bind, and to be able to
|
|
* edit and restore texture binds on the fly without querying the context.
|
|
* Also this allows us to keep track of textures bounds to many texture units.
|
|
* Keep the targets to know what target to set to 0 for unbinding (legacy).
|
|
* Init first target to GL_TEXTURE_2D for texture_bind_temp to work.
|
|
*/
|
|
GLuint targets_[64] = {GL_TEXTURE_2D};
|
|
GLuint textures_[64] = {0};
|
|
GLuint samplers_[64] = {0};
|
|
uint64_t dirty_texture_binds_ = 0;
|
|
|
|
GLuint images_[8] = {0};
|
|
GLenum formats_[8] = {0};
|
|
uint8_t dirty_image_binds_ = 0;
|
|
|
|
public:
|
|
GLStateManager();
|
|
|
|
void apply_state(void) override;
|
|
void force_state(void) override;
|
|
|
|
void issue_barrier(eGPUBarrier barrier_bits) override;
|
|
|
|
void texture_bind(Texture *tex, eGPUSamplerState sampler, int unit) override;
|
|
void texture_bind_temp(GLTexture *tex);
|
|
void texture_unbind(Texture *tex) override;
|
|
void texture_unbind_all(void) override;
|
|
|
|
void image_bind(Texture *tex, int unit) override;
|
|
void image_unbind(Texture *tex) override;
|
|
void image_unbind_all(void) override;
|
|
|
|
void texture_unpack_row_length_set(uint len) override;
|
|
|
|
uint64_t bound_texture_slots(void);
|
|
uint8_t bound_image_slots(void);
|
|
|
|
private:
|
|
static void set_write_mask(const eGPUWriteMask value);
|
|
static void set_depth_test(const eGPUDepthTest value);
|
|
static void set_stencil_test(const eGPUStencilTest test, const eGPUStencilOp operation);
|
|
static void set_stencil_mask(const eGPUStencilTest test, const GPUStateMutable state);
|
|
static void set_clip_distances(const int new_dist_len, const int old_dist_len);
|
|
static void set_logic_op(const bool enable);
|
|
static void set_facing(const bool invert);
|
|
static void set_backface_culling(const eGPUFaceCullTest test);
|
|
static void set_provoking_vert(const eGPUProvokingVertex vert);
|
|
static void set_shadow_bias(const bool enable);
|
|
static void set_blend(const eGPUBlend value);
|
|
|
|
void set_state(const GPUState &state);
|
|
void set_mutable_state(const GPUStateMutable &state);
|
|
|
|
void texture_bind_apply(void);
|
|
void image_bind_apply(void);
|
|
|
|
MEM_CXX_CLASS_ALLOC_FUNCS("GLStateManager")
|
|
};
|
|
|
|
static inline GLbitfield to_gl(eGPUBarrier barrier_bits)
|
|
{
|
|
GLbitfield barrier = 0;
|
|
if (barrier_bits & GPU_BARRIER_SHADER_IMAGE_ACCESS) {
|
|
barrier |= GL_SHADER_IMAGE_ACCESS_BARRIER_BIT;
|
|
}
|
|
if (barrier_bits & GPU_BARRIER_TEXTURE_FETCH) {
|
|
barrier |= GL_TEXTURE_FETCH_BARRIER_BIT;
|
|
}
|
|
if (barrier_bits & GPU_BARRIER_SHADER_STORAGE) {
|
|
barrier |= GL_SHADER_STORAGE_BARRIER_BIT;
|
|
}
|
|
return barrier;
|
|
}
|
|
|
|
} // namespace gpu
|
|
} // namespace blender
|