154 lines
4.4 KiB
C++
154 lines
4.4 KiB
C++
/* SPDX-License-Identifier: Apache-2.0
|
|
* Copyright 2021-2022 Blender Foundation */
|
|
|
|
#pragma once
|
|
|
|
#include <atomic>
|
|
|
|
#include "MEM_guardedalloc.h"
|
|
|
|
#include "RNA_blender_cpp.h"
|
|
|
|
#include "session/display_driver.h"
|
|
|
|
#include "util/thread.h"
|
|
#include "util/unique_ptr.h"
|
|
#include "util/vector.h"
|
|
|
|
typedef struct GPUContext GPUContext;
|
|
typedef struct GPUFence GPUFence;
|
|
typedef struct GPUShader GPUShader;
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
/* Base class of shader used for display driver rendering. */
|
|
class BlenderDisplayShader {
|
|
public:
|
|
static constexpr const char *position_attribute_name = "pos";
|
|
static constexpr const char *tex_coord_attribute_name = "texCoord";
|
|
|
|
/* Create shader implementation suitable for the given render engine and scene configuration. */
|
|
static unique_ptr<BlenderDisplayShader> create(BL::RenderEngine &b_engine, BL::Scene &b_scene);
|
|
|
|
BlenderDisplayShader() = default;
|
|
virtual ~BlenderDisplayShader() = default;
|
|
|
|
virtual GPUShader *bind(int width, int height) = 0;
|
|
virtual void unbind() = 0;
|
|
|
|
/* Get attribute location for position and texture coordinate respectively.
|
|
* NOTE: The shader needs to be bound to have access to those. */
|
|
virtual int get_position_attrib_location();
|
|
virtual int get_tex_coord_attrib_location();
|
|
|
|
protected:
|
|
/* Get program of this display shader.
|
|
* NOTE: The shader needs to be bound to have access to this. */
|
|
virtual GPUShader *get_shader_program() = 0;
|
|
|
|
/* Cached values of various OpenGL resources. */
|
|
int position_attribute_location_ = -1;
|
|
int tex_coord_attribute_location_ = -1;
|
|
};
|
|
|
|
/* Implementation of display rendering shader used in the case when render engine does not support
|
|
* display space shader. */
|
|
class BlenderFallbackDisplayShader : public BlenderDisplayShader {
|
|
public:
|
|
virtual GPUShader *bind(int width, int height) override;
|
|
virtual void unbind() override;
|
|
|
|
protected:
|
|
virtual GPUShader *get_shader_program() override;
|
|
|
|
void create_shader_if_needed();
|
|
void destroy_shader();
|
|
|
|
GPUShader *shader_program_ = 0;
|
|
int image_texture_location_ = -1;
|
|
int fullscreen_location_ = -1;
|
|
|
|
/* Shader compilation attempted. Which means, that if the shader program is 0 then compilation or
|
|
* linking has failed. Do not attempt to re-compile the shader. */
|
|
bool shader_compile_attempted_ = false;
|
|
};
|
|
|
|
class BlenderDisplaySpaceShader : public BlenderDisplayShader {
|
|
public:
|
|
BlenderDisplaySpaceShader(BL::RenderEngine &b_engine, BL::Scene &b_scene);
|
|
|
|
virtual GPUShader *bind(int width, int height) override;
|
|
virtual void unbind() override;
|
|
|
|
protected:
|
|
virtual GPUShader *get_shader_program() override;
|
|
|
|
BL::RenderEngine b_engine_;
|
|
BL::Scene &b_scene_;
|
|
|
|
/* Cached values of various OpenGL resources. */
|
|
GPUShader *shader_program_ = nullptr;
|
|
};
|
|
|
|
/* Display driver implementation which is specific for Blender viewport integration. */
|
|
class BlenderDisplayDriver : public DisplayDriver {
|
|
public:
|
|
BlenderDisplayDriver(BL::RenderEngine &b_engine, BL::Scene &b_scene, const bool background);
|
|
~BlenderDisplayDriver();
|
|
|
|
virtual void graphics_interop_activate() override;
|
|
virtual void graphics_interop_deactivate() override;
|
|
|
|
virtual void clear() override;
|
|
|
|
void set_zoom(float zoom_x, float zoom_y);
|
|
|
|
protected:
|
|
virtual void next_tile_begin() override;
|
|
|
|
virtual bool update_begin(const Params ¶ms, int texture_width, int texture_height) override;
|
|
virtual void update_end() override;
|
|
|
|
virtual half4 *map_texture_buffer() override;
|
|
virtual void unmap_texture_buffer() override;
|
|
|
|
virtual GraphicsInterop graphics_interop_get() override;
|
|
|
|
virtual void draw(const Params ¶ms) override;
|
|
|
|
virtual void flush() override;
|
|
|
|
/* Helper function which allocates new GPU context. */
|
|
void gpu_context_create();
|
|
bool gpu_context_enable();
|
|
void gpu_context_disable();
|
|
void gpu_context_destroy();
|
|
void gpu_context_lock();
|
|
void gpu_context_unlock();
|
|
|
|
/* Create GPU resources used by the display driver. */
|
|
bool gpu_resources_create();
|
|
|
|
/* Destroy all GPU resources which are being used by this object. */
|
|
void gpu_resources_destroy();
|
|
|
|
BL::RenderEngine b_engine_;
|
|
bool background_;
|
|
|
|
/* Content of the display is to be filled with zeroes. */
|
|
std::atomic<bool> need_clear_ = true;
|
|
|
|
unique_ptr<BlenderDisplayShader> display_shader_;
|
|
|
|
/* Opaque storage for an internal state and data for tiles. */
|
|
struct Tiles;
|
|
unique_ptr<Tiles> tiles_;
|
|
|
|
GPUFence *gpu_render_sync_ = nullptr;
|
|
GPUFence *gpu_upload_sync_ = nullptr;
|
|
|
|
float2 zoom_ = make_float2(1.0f, 1.0f);
|
|
};
|
|
|
|
CCL_NAMESPACE_END
|