godot/drivers/gles3/effects/copy_effects.h
clayjohn e600fb93a5 Add 2D lights to OpenGL3 canvas renderer
This is an initial implementation using the same single-pass approach as the RenderingDevice.
2022-10-12 17:55:01 -07:00

75 lines
3.2 KiB
C++

/*************************************************************************/
/* copy_effects.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* "Software"), to deal in the Software without restriction, including */
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/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
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/* The above copyright notice and this permission notice shall be */
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#ifndef COPY_EFFECTS_GLES3_H
#define COPY_EFFECTS_GLES3_H
#ifdef GLES3_ENABLED
#include "../shaders/copy.glsl.gen.h"
namespace GLES3 {
class CopyEffects {
private:
struct Copy {
CopyShaderGLES3 shader;
RID shader_version;
} copy;
static CopyEffects *singleton;
// Use for full-screen effects. Slightly more efficient than screen_quad as this eliminates pixel overdraw along the diagonal.
GLuint screen_triangle = 0;
GLuint screen_triangle_array = 0;
// Use for rect-based effects.
GLuint quad = 0;
GLuint quad_array = 0;
public:
static CopyEffects *get_singleton();
CopyEffects();
~CopyEffects();
// These functions assume that a framebuffer and texture are bound already. They only manage the shader, uniforms, and vertex array.
void copy_to_rect(const Rect2 &p_rect);
void copy_screen();
void bilinear_blur(GLuint p_source_texture, int p_mipmap_count, const Rect2i &p_region);
void set_color(const Color &p_color, const Rect2i &p_region);
};
} //namespace GLES3
#endif // GLES3_ENABLED
#endif // COPY_EFFECTS_GLES3_H