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/*******************************************************************************************
*
* raylib [shaders] example - Apply a shader to some shape or texture
*
* NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
* OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
*
* NOTE: Shaders used in this example are #version 330 (OpenGL 3.3), to test this example
* on OpenGL ES 2.0 platforms (Android, Raspberry Pi, HTML5), use #version 100 shaders
* raylib comes with shaders ready for both versions, check raylib/shaders install folder
*
* This example has been created using raylib 1.3 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2015 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#include <stdio.h>
#include <stdlib.h>
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
int screenWidth = 800;
int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [shaders] example - shapes and texture shaders");
Texture2D sonic = LoadTexture("resources/texture_formats/sonic.png");
// NOTE: This shader is a bit different than model/postprocessing shaders,
// it requires the color data for every vertice to use it in every shape or texture independently
Shader shader = LoadShader("resources/shaders/shapes_base.vs",
"resources/shaders/shapes_grayscale.fs");
// Shader usage is also different than models/postprocessing, shader is just activated when required
SetTargetFPS(60);
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
// TODO: Update your variables here
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
// Start drawing with default shader
DrawText("USING DEFAULT SHADER", 20, 40, 10, RED);
DrawCircle(80, 120, 35, DARKBLUE);
DrawCircleGradient(80, 220, 60, GREEN, SKYBLUE);
DrawCircleLines(80, 340, 80, DARKBLUE);
// Activate our custom shader to be applied on next shapes/textures drawings
SetCustomShader(shader);
DrawText("USING CUSTOM SHADER", 190, 40, 10, RED);
DrawRectangle(250 - 60, 90, 120, 60, RED);
DrawRectangleGradient(250 - 90, 170, 180, 130, MAROON, GOLD);
DrawRectangleLines(250 - 40, 320, 80, 60, ORANGE);
// Activate our default shader for next drawings
SetDefaultShader();
DrawText("USING DEFAULT SHADER", 370, 40, 10, RED);
DrawTriangle((Vector2){430, 80},
(Vector2){430 - 60, 150},
(Vector2){430 + 60, 150}, VIOLET);
DrawTriangleLines((Vector2){430, 160},
(Vector2){430 - 20, 230},
(Vector2){430 + 20, 230}, DARKBLUE);
DrawPoly((Vector2){430, 320}, 6, 80, 0, BROWN);
// Activate our custom shader to be applied on next shapes/textures drawings
SetCustomShader(shader);
DrawTexture(sonic, 380, -10, WHITE); // Using custom shader
// Activate our default shader for next drawings
SetDefaultShader();
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadShader(shader); // Unload shader
UnloadTexture(sonic); // Unload texture
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
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