94 lines
4.0 KiB
C
94 lines
4.0 KiB
C
/*******************************************************************************************
|
|
*
|
|
* raylib [textures] example - blend modes
|
|
*
|
|
* NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
|
|
*
|
|
* This example has been created using raylib 3.5 (www.raylib.com)
|
|
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
|
|
*
|
|
* Example contributed by Karlo Licudine (@accidentalrebel) and reviewed by Ramon Santamaria (@raysan5)
|
|
*
|
|
* Copyright (c) 2020 Karlo Licudine (@accidentalrebel)
|
|
*
|
|
********************************************************************************************/
|
|
|
|
#include "raylib.h"
|
|
|
|
int main(void)
|
|
{
|
|
// Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
const int screenWidth = 800;
|
|
const int screenHeight = 450;
|
|
|
|
InitWindow(screenWidth, screenHeight, "raylib [textures] example - blend modes");
|
|
|
|
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
|
|
Image bgImage = LoadImage("resources/cyberpunk_street_background.png"); // Loaded in CPU memory (RAM)
|
|
Texture2D bgTexture = LoadTextureFromImage(bgImage); // Image converted to texture, GPU memory (VRAM)
|
|
|
|
Image fgImage = LoadImage("resources/cyberpunk_street_foreground.png"); // Loaded in CPU memory (RAM)
|
|
Texture2D fgTexture = LoadTextureFromImage(fgImage); // Image converted to texture, GPU memory (VRAM)
|
|
|
|
// Once image has been converted to texture and uploaded to VRAM, it can be unloaded from RAM
|
|
UnloadImage(bgImage);
|
|
UnloadImage(fgImage);
|
|
|
|
const int blendCountMax = 4;
|
|
BlendMode blendMode = 0;
|
|
|
|
// Main game loop
|
|
while (!WindowShouldClose()) // Detect window close button or ESC key
|
|
{
|
|
// Update
|
|
//----------------------------------------------------------------------------------
|
|
if (IsKeyPressed(KEY_SPACE))
|
|
{
|
|
if (blendMode >= (blendCountMax - 1)) blendMode = 0;
|
|
else blendMode++;
|
|
}
|
|
//----------------------------------------------------------------------------------
|
|
|
|
// Draw
|
|
//----------------------------------------------------------------------------------
|
|
BeginDrawing();
|
|
|
|
ClearBackground(RAYWHITE);
|
|
|
|
DrawTexture(bgTexture, screenWidth/2 - bgTexture.width/2, screenHeight/2 - bgTexture.height/2, WHITE);
|
|
|
|
// Apply the blend mode and then draw the foreground texture
|
|
BeginBlendMode(blendMode);
|
|
DrawTexture(fgTexture, screenWidth/2 - fgTexture.width/2, screenHeight/2 - fgTexture.height/2, WHITE);
|
|
EndBlendMode();
|
|
|
|
// Draw the texts
|
|
DrawText("Press SPACE to change blend modes.", 310, 350, 10, GRAY);
|
|
|
|
switch (blendMode)
|
|
{
|
|
case BLEND_ALPHA: DrawText("Current: BLEND_ALPHA", (screenWidth / 2) - 60, 370, 10, GRAY); break;
|
|
case BLEND_ADDITIVE: DrawText("Current: BLEND_ADDITIVE", (screenWidth / 2) - 60, 370, 10, GRAY); break;
|
|
case BLEND_MULTIPLIED: DrawText("Current: BLEND_MULTIPLIED", (screenWidth / 2) - 60, 370, 10, GRAY); break;
|
|
case BLEND_ADD_COLORS: DrawText("Current: BLEND_ADD_COLORS", (screenWidth / 2) - 60, 370, 10, GRAY); break;
|
|
default: break;
|
|
}
|
|
|
|
DrawText("(c) Cyberpunk Street Environment by Luis Zuno (@ansimuz)", screenWidth - 330, screenHeight - 20, 10, GRAY);
|
|
|
|
EndDrawing();
|
|
//----------------------------------------------------------------------------------
|
|
}
|
|
|
|
// De-Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
UnloadTexture(fgTexture); // Unload foreground texture
|
|
UnloadTexture(bgTexture); // Unload background texture
|
|
|
|
CloseWindow(); // Close window and OpenGL context
|
|
//--------------------------------------------------------------------------------------
|
|
|
|
return 0;
|
|
}
|