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#include <raylib.h>
const int width = 1280;
const int height = 1280;
int main() {
InitWindow(width, height, "brotshader");
Shader shader = LoadShader(0, "mandelbrot.glsl");
RenderTexture2D target = LoadRenderTexture(width, height);
float c[2] = {0, 0};
float offset[2] = {0, 0};
float zoom = 2.0f;
int max = 255;
int resolutionLoc = GetShaderLocation(shader, "resolution");
int locationLoc = GetShaderLocation(shader, "location");
int zoomLoc = GetShaderLocation(shader, "zoom");
int maxLoc = GetShaderLocation(shader, "max");
float screen[2] = {(float)width, (float)height};
SetShaderValue(shader, resolutionLoc, screen, SHADER_UNIFORM_VEC2);
SetShaderValue(shader, locationLoc, &offset, SHADER_UNIFORM_VEC2);
SetShaderValue(shader, zoomLoc, &zoom, SHADER_UNIFORM_FLOAT);
SetShaderValue(shader, maxLoc, &max, SHADER_UNIFORM_INT);
SetTargetFPS(60);
while (!WindowShouldClose()) {
if (IsKeyDown(KEY_UP)) offset[1] -= zoom * 0.01f;
if (IsKeyDown(KEY_DOWN)) offset[1] += zoom * 0.01f;
if (IsKeyDown(KEY_RIGHT)) offset[0] -= zoom * 0.01f;
if (IsKeyDown(KEY_LEFT)) offset[0] += zoom * 0.01f;
if (IsKeyDown(KEY_W)) zoom -= zoom * 0.01f;
if (IsKeyDown(KEY_S)) zoom += zoom * 0.01f;
if (IsKeyDown(KEY_A)) max -= 1;
if (IsKeyDown(KEY_D)) max += 1;
SetShaderValue(shader, resolutionLoc, screen, SHADER_UNIFORM_VEC2);
SetShaderValue(shader, locationLoc, &offset, SHADER_UNIFORM_VEC2);
SetShaderValue(shader, zoomLoc, &zoom, SHADER_UNIFORM_FLOAT);
SetShaderValue(shader, maxLoc, &max, SHADER_UNIFORM_INT);
BeginDrawing();
ClearBackground(RAYWHITE);
BeginTextureMode(target);
DrawRectangle(0, 0, width, height, BLACK);
EndTextureMode();
BeginShaderMode(shader);
DrawTexture(target.texture, 0, 0, WHITE);
EndShaderMode();
EndDrawing();
}
UnloadShader(shader);
UnloadRenderTexture(target);
CloseWindow();
}
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