egutierrez
042bb43b37
- cpp/functions/gfx: gl_shader, gl_framebuffer, fullscreen_quad, shader_canvas - cpp/apps/shaders_lab: main + 3 seed shaders (plasma, circle, checker) - ImGui docking layout: Code | Canvas | Controls Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
29 lines
787 B
C++
29 lines
787 B
C++
#pragma once
|
|
#include <string>
|
|
#include "gfx/gl_framebuffer.h"
|
|
#include "gfx/gl_shader.h"
|
|
#include "gfx/fullscreen_quad.h"
|
|
|
|
namespace fn::gfx {
|
|
|
|
struct ShaderCanvas {
|
|
Framebuffer fb;
|
|
Quad quad;
|
|
unsigned int program = 0;
|
|
bool initialized = false;
|
|
};
|
|
|
|
// Inicializa recursos GL (idempotente).
|
|
void canvas_init(ShaderCanvas& c);
|
|
|
|
// Sustituye el programa activo (borra el anterior). Acepta program=0 para pantalla en negro.
|
|
void canvas_set_program(ShaderCanvas& c, unsigned int program);
|
|
|
|
// Renderiza el shader al FBO y dibuja la textura resultante como contenido del panel ImGui.
|
|
// Llamar DENTRO de un ImGui::Begin/End. Ocupa GetContentRegionAvail().
|
|
void canvas_render(ShaderCanvas& c, float time_seconds);
|
|
|
|
void canvas_destroy(ShaderCanvas& c);
|
|
|
|
} // namespace fn::gfx
|