Init commit v1.0

1 files changed, 152 insertions, 0 deletions

diff --git a/deps/raylib/examples/shaders/shaders_palette_switch.c b/deps/raylib/examples/shaders/shaders_palette_switch.c
new file mode 100644
index 0000000..797fac8
--- /dev/null
+++ b/deps/raylib/examples/shaders/shaders_palette_switch.c
@@ -0,0 +1,152 @@
+/*******************************************************************************************
+*
+*   raylib [shaders] example - Color palette switch
+*
+*   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
+*
+*   Example originally created with raylib 2.5, last time updated with raylib 3.7
+*
+*   Example contributed by Marco Lizza (@MarcoLizza) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2019-2024 Marco Lizza (@MarcoLizza) and Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#if defined(PLATFORM_DESKTOP)
+    #define GLSL_VERSION            330
+#else   // PLATFORM_ANDROID, PLATFORM_WEB
+    #define GLSL_VERSION            100
+#endif
+
+#define MAX_PALETTES            3
+#define COLORS_PER_PALETTE      8
+#define VALUES_PER_COLOR        3
+
+static const int palettes[MAX_PALETTES][COLORS_PER_PALETTE*VALUES_PER_COLOR] = {
+    {   // 3-BIT RGB
+        0, 0, 0,
+        255, 0, 0,
+        0, 255, 0,
+        0, 0, 255,
+        0, 255, 255,
+        255, 0, 255,
+        255, 255, 0,
+        255, 255, 255,
+    },
+    {   // AMMO-8 (GameBoy-like)
+        4, 12, 6,
+        17, 35, 24,
+        30, 58, 41,
+        48, 93, 66,
+        77, 128, 97,
+        137, 162, 87,
+        190, 220, 127,
+        238, 255, 204,
+    },
+    {   // RKBV (2-strip film)
+        21, 25, 26,
+        138, 76, 88,
+        217, 98, 117,
+        230, 184, 193,
+        69, 107, 115,
+        75, 151, 166,
+        165, 189, 194,
+        255, 245, 247,
+    }
+};
+
+static const char *paletteText[] = {
+    "3-BIT RGB",
+    "AMMO-8 (GameBoy-like)",
+    "RKBV (2-strip film)"
+};
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [shaders] example - color palette switch");
+
+    // Load shader to be used on some parts drawing
+    // NOTE 1: Using GLSL 330 shader version, on OpenGL ES 2.0 use GLSL 100 shader version
+    // NOTE 2: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader
+    Shader shader = LoadShader(0, TextFormat("resources/shaders/glsl%i/palette_switch.fs", GLSL_VERSION));
+
+    // Get variable (uniform) location on the shader to connect with the program
+    // NOTE: If uniform variable could not be found in the shader, function returns -1
+    int paletteLoc = GetShaderLocation(shader, "palette");
+
+    int currentPalette = 0;
+    int lineHeight = screenHeight/COLORS_PER_PALETTE;
+
+    SetTargetFPS(60);                       // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())            // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        if (IsKeyPressed(KEY_RIGHT)) currentPalette++;
+        else if (IsKeyPressed(KEY_LEFT)) currentPalette--;
+
+        if (currentPalette >= MAX_PALETTES) currentPalette = 0;
+        else if (currentPalette < 0) currentPalette = MAX_PALETTES - 1;
+
+        // Send palette data to the shader to be used on drawing
+        // NOTE: We are sending RGB triplets w/o the alpha channel
+        SetShaderValueV(shader, paletteLoc, palettes[currentPalette], SHADER_UNIFORM_IVEC3, COLORS_PER_PALETTE);
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            BeginShaderMode(shader);
+
+                for (int i = 0; i < COLORS_PER_PALETTE; i++)
+                {
+                    // Draw horizontal screen-wide rectangles with increasing "palette index"
+                    // The used palette index is encoded in the RGB components of the pixel
+                    DrawRectangle(0, lineHeight*i, GetScreenWidth(), lineHeight, (Color){ i, i, i, 255 });
+                }
+
+            EndShaderMode();
+
+            DrawText("< >", 10, 10, 30, DARKBLUE);
+            DrawText("CURRENT PALETTE:", 60, 15, 20, RAYWHITE);
+            DrawText(paletteText[currentPalette], 300, 15, 20, RED);
+
+            DrawFPS(700, 15);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadShader(shader);       // Unload shader
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}