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/*******************************************************************************************
*
* raylib [shaders] example - Texture Waves
*
* 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 2.5 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Example contributed by Anata (@anatagawa) and reviewed by Ramon Santamaria (@raysan5)
*
* Copyright (c) 2019 Anata (@anatagawa) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
#if defined(PLATFORM_DESKTOP)
#define GLSL_VERSION 330
#else // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
#define GLSL_VERSION 100
#endif
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
Texture2D texture = { 0 };
Shader shader = { 0 };
int secondsLoc = 0;
int freqXLoc = 0;
int freqYLoc = 0;
int ampXLoc = 0;
int ampYLoc = 0;
int speedXLoc = 0;
int speedYLoc = 0;
// Shader uniform values that can be updated at any time
float freqX = 25.0f;
float freqY = 25.0f;
float ampX = 5.0f;
float ampY = 5.0f;
float speedX = 8.0f;
float speedY = 8.0f;
float seconds = 0.0f;
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Program Main Entry Point
//----------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(screenWidth, screenHeight, "raylib [shaders] example - texture waves");
// Load space texture to apply shaders
texture = LoadTexture("resources/space.png");
// Load shader and setup location points and values
shader = LoadShader(0, TextFormat("resources/shaders/glsl%i/wave.fs", GLSL_VERSION));
secondsLoc = GetShaderLocation(shader, "secondes");
freqXLoc = GetShaderLocation(shader, "freqX");
freqYLoc = GetShaderLocation(shader, "freqY");
ampXLoc = GetShaderLocation(shader, "ampX");
ampYLoc = GetShaderLocation(shader, "ampY");
speedXLoc = GetShaderLocation(shader, "speedX");
speedYLoc = GetShaderLocation(shader, "speedY");
float screenSize[2] = { (float)GetScreenWidth(), (float)GetScreenHeight() };
SetShaderValue(shader, GetShaderLocation(shader, "size"), &screenSize, UNIFORM_VEC2);
SetShaderValue(shader, freqXLoc, &freqX, UNIFORM_FLOAT);
SetShaderValue(shader, freqYLoc, &freqY, UNIFORM_FLOAT);
SetShaderValue(shader, ampXLoc, &X, UNIFORM_FLOAT);
SetShaderValue(shader, ampYLoc, &Y, UNIFORM_FLOAT);
SetShaderValue(shader, speedXLoc, &speedX, UNIFORM_FLOAT);
SetShaderValue(shader, speedYLoc, &speedY, UNIFORM_FLOAT);
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 60, 1);
#else
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
UpdateDrawFrame();
}
#endif
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadShader(shader); // Unload shader
UnloadTexture(texture); // Unload texture
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// Update
//----------------------------------------------------------------------------------
seconds += GetFrameTime();
SetShaderValue(shader, secondsLoc, &seconds, UNIFORM_FLOAT);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
BeginShaderMode(shader);
DrawTexture(texture, 0, 0, WHITE);
DrawTexture(texture, texture.width, 0, WHITE);
EndShaderMode();
EndDrawing();
//----------------------------------------------------------------------------------
}
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