New textures loading examples

examples/textures_formats_loading.c

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+/*******************************************************************************************
+*
+*   raylib [textures] example - texture formats loading (compressed and uncompressed)
+*
+*   NOTE: This example requires raylib OpenGL 3.3+ or ES2 versions for compressed textures,
+*         OpenGL 1.1 does not support compressed textures, only uncompressed ones.
+*
+*   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"
+
+#define NUM_TEXTURES    24
+
+typedef enum { 
+    PNG_R8G8B8A8 = 0, 
+    PVR_GRAYSCALE, 
+    PVR_GRAY_ALPHA, 
+    PVR_R5G6B5, 
+    PVR_R5G5B5A1, 
+    PVR_R4G4B4A4,
+    DDS_R5G6B5,
+    DDS_R5G5B5A1,
+    DDS_R4G4B4A4,
+    DDS_R8G8B8A8,
+    DDS_DXT1_RGB,
+    DDS_DXT1_RGBA,
+    DDS_DXT3_RGBA,
+    DDS_DXT5_RGBA,
+    PKM_ETC1_RGB,
+    PKM_ETC2_RGB,
+    PKM_ETC2_EAC_RGBA,
+    KTX_ETC1_RGB,
+    KTX_ETC2_RGB,
+    KTX_ETC2_EAC_RGBA,
+    ASTC_4x4_LDR,
+    ASTC_8x8_LDR,
+    PVR_PVRT_RGB,
+    PVR_PVRT_RGBA
+    
+} TextureFormats;
+
+static const char *formatText[] = {
+    "PNG_R8G8B8A8",
+    "PVR_GRAYSCALE",
+    "PVR_GRAY_ALPHA",
+    "PVR_R5G6B5",
+    "PVR_R5G5B5A1",
+    "PVR_R4G4B4A4",
+    "DDS_R5G6B5",
+    "DDS_R5G5B5A1",
+    "DDS_R4G4B4A4",
+    "DDS_R8G8B8A8",
+    "DDS_DXT1_RGB",
+    "DDS_DXT1_RGBA",
+    "DDS_DXT3_RGBA",
+    "DDS_DXT5_RGBA",
+    "PKM_ETC1_RGB",
+    "PKM_ETC2_RGB",
+    "PKM_ETC2_EAC_RGBA",
+    "KTX_ETC1_RGB",
+    "KTX_ETC2_RGB",
+    "KTX_ETC2_EAC_RGBA",
+    "ASTC_4x4_LDR",
+    "ASTC_8x8_LDR",
+    "PVR_PVRT_RGB",
+    "PVR_PVRT_RGBA"
+};
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 480;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture formats loading");
+    
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+    
+    Texture2D sonic[NUM_TEXTURES];
+
+    sonic[PNG_R8G8B8A8] = LoadTexture("resources/texture_formats/sonic.png");
+    
+    // Load UNCOMPRESSED PVR texture data
+    sonic[PVR_GRAYSCALE] = LoadTexture("resources/texture_formats/sonic_GRAYSCALE.pvr");
+    sonic[PVR_GRAY_ALPHA] = LoadTexture("resources/texture_formats/sonic_L8A8.pvr");
+    sonic[PVR_R5G6B5] = LoadTexture("resources/texture_formats/sonic_R5G6B5.pvr");
+    sonic[PVR_R5G5B5A1] = LoadTexture("resources/texture_formats/sonic_R5G5B5A1.pvr");
+    sonic[PVR_R4G4B4A4] = LoadTexture("resources/texture_formats/sonic_R4G4B4A4.pvr");
+    
+    // Load UNCOMPRESSED DDS texture data
+    sonic[DDS_R5G6B5] = LoadTexture("resources/texture_formats/sonic_R5G6B5.dds");
+    sonic[DDS_R5G5B5A1] = LoadTexture("resources/texture_formats/sonic_A1R5G5B5.dds");
+    sonic[DDS_R4G4B4A4] = LoadTexture("resources/texture_formats/sonic_A4R4G4B4.dds");
+    sonic[DDS_R8G8B8A8] = LoadTexture("resources/texture_formats/sonic_A8R8G8B8.dds");
+   
+    // Load COMPRESSED DXT DDS texture data (if supported)
+    sonic[DDS_DXT1_RGB] = LoadTexture("resources/texture_formats/sonic_DXT1_RGB.dds");
+    sonic[DDS_DXT1_RGBA] = LoadTexture("resources/texture_formats/sonic_DXT1_RGBA.dds");
+    sonic[DDS_DXT3_RGBA] = LoadTexture("resources/texture_formats/sonic_DXT3_RGBA.dds");
+    sonic[DDS_DXT5_RGBA] = LoadTexture("resources/texture_formats/sonic_DXT5_RGBA.dds");
+    
+    // Load COMPRESSED ETC texture data (if supported)
+    sonic[PKM_ETC1_RGB] = LoadTexture("resources/texture_formats/sonic_ETC1_RGB.pkm");
+    sonic[PKM_ETC2_RGB] = LoadTexture("resources/texture_formats/sonic_ETC2_RGB.pkm");
+    sonic[PKM_ETC2_EAC_RGBA] = LoadTexture("resources/texture_formats/sonic_ETC2_EAC_RGBA.pkm");
+    
+    sonic[KTX_ETC1_RGB] = LoadTexture("resources/texture_formats/sonic_ETC1_RGB.ktx");
+    sonic[KTX_ETC2_RGB] = LoadTexture("resources/texture_formats/sonic_ETC2_RGB.ktx");
+    sonic[KTX_ETC2_EAC_RGBA] = LoadTexture("resources/texture_formats/sonic_ETC2_EAC_RGBA.ktx");
+    
+    // Load COMPRESSED ASTC texture data (if supported)
+    sonic[ASTC_4x4_LDR] = LoadTexture("resources/texture_formats/sonic_ASTC_4x4_ldr.astc");
+    sonic[ASTC_8x8_LDR] = LoadTexture("resources/texture_formats/sonic_ASTC_8x8_ldr.astc");
+
+    // Load COMPRESSED PVR texture data (if supported)
+    sonic[PVR_PVRT_RGB] = LoadTexture("resources/texture_formats/sonic_PVRT_RGB.pvr");
+    sonic[PVR_PVRT_RGBA] = LoadTexture("resources/texture_formats/sonic_PVRT_RGBA.pvr");
+    
+    int selectedFormat = PNG_R8G8B8A8;
+    
+    Rectangle selectRecs[NUM_TEXTURES];
+    
+    for (int i = 0; i < NUM_TEXTURES; i++)
+    {
+        if (i < NUM_TEXTURES/2) selectRecs[i] = (Rectangle){ 40, 45 + 32*i, 150, 30 };
+        else selectRecs[i] = (Rectangle){ 40 + 152, 45 + 32*(i - NUM_TEXTURES/2), 150, 30 };
+    }
+    
+    // Texture sizes in KB
+    float textureSizes[NUM_TEXTURES] = { 
+        512*512*32/8/1024,      //PNG_R8G8B8A8 (32 bpp)
+        512*512*8/8/1024,       //PVR_GRAYSCALE (8 bpp)
+        512*512*16/8/1024,      //PVR_GRAY_ALPHA (16 bpp) 
+        512*512*16/8/1024,      //PVR_R5G6B5 (16 bpp)
+        512*512*16/8/1024,      //PVR_R5G5B5A1 (16 bpp) 
+        512*512*16/8/1024,      //PVR_R4G4B4A4 (16 bpp)
+        512*512*16/8/1024,      //DDS_R5G6B5 (16 bpp)
+        512*512*16/8/1024,      //DDS_R5G5B5A1 (16 bpp)
+        512*512*16/8/1024,      //DDS_R4G4B4A4 (16 bpp)
+        512*512*32/8/1024,      //DDS_R8G8B8A8 (32 bpp)
+        512*512*4/8/1024,       //DDS_DXT1_RGB (4 bpp) -Compressed-
+        512*512*4/8/1024,       //DDS_DXT1_RGBA (4 bpp) -Compressed-
+        512*512*8/8/1024,       //DDS_DXT3_RGBA (8 bpp) -Compressed-
+        512*512*8/8/1024,       //DDS_DXT5_RGBA (8 bpp) -Compressed-
+        512*512*4/8/1024,       //PKM_ETC1_RGB (4 bpp) -Compressed-
+        512*512*4/8/1024,       //PKM_ETC2_RGB (4 bpp) -Compressed-
+        512*512*8/8/1024,       //PKM_ETC2_EAC_RGBA (8 bpp) -Compressed-
+        512*512*4/8/1024,       //KTX_ETC1_RGB (4 bpp) -Compressed-
+        512*512*4/8/1024,       //KTX_ETC2_RGB (4 bpp) -Compressed-
+        512*512*8/8/1024,       //KTX_ETC2_EAC_RGBA (8 bpp) -Compressed-
+        512*512*8/8/1024,       //ASTC_4x4_LDR (8 bpp) -Compressed-
+        512*512*2/8/1024,       //ASTC_8x8_LDR (2 bpp) -Compressed-
+        512*512*4/8/1024,       //PVR_PVRT_RGB (4 bpp) -Compressed-
+        512*512*4/8/1024,       //PVR_PVRT_RGBA (4 bpp) -Compressed-
+    };
+
+    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_DOWN))
+        {
+            selectedFormat++;
+            if (selectedFormat >= NUM_TEXTURES) selectedFormat = 0;
+        }
+        else if (IsKeyPressed(KEY_UP))
+        {
+            selectedFormat--;
+            if (selectedFormat < 0) selectedFormat = NUM_TEXTURES - 1;
+        }
+        else if (IsKeyPressed(KEY_RIGHT))
+        {
+            if (selectedFormat < NUM_TEXTURES/2) selectedFormat += NUM_TEXTURES/2;
+        }
+        else if (IsKeyPressed(KEY_LEFT))
+        {
+            if (selectedFormat >= NUM_TEXTURES/2) selectedFormat -= NUM_TEXTURES/2;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+            
+            // Draw rectangles
+            for (int i = 0; i < NUM_TEXTURES; i++)
+            {
+                if (i == selectedFormat)
+                {
+                    DrawRectangleRec(selectRecs[i], SKYBLUE);
+                    DrawRectangleLines(selectRecs[i].x, selectRecs[i].y, selectRecs[i].width, selectRecs[i].height, BLUE);
+                    DrawText(formatText[i], selectRecs[i].x + selectRecs[i].width/2 - MeasureText(formatText[i], 10)/2, selectRecs[i].y + 11, 10, DARKBLUE);
+                }
+                else
+                {
+                    DrawRectangleRec(selectRecs[i], LIGHTGRAY);
+                    DrawRectangleLines(selectRecs[i].x, selectRecs[i].y, selectRecs[i].width, selectRecs[i].height, GRAY);
+                    DrawText(formatText[i], selectRecs[i].x + selectRecs[i].width/2 - MeasureText(formatText[i], 10)/2, selectRecs[i].y + 11, 10, DARKGRAY);
+                }
+            }
+			
+            // Draw selected texture
+            if (sonic[selectedFormat].id != 0)
+            {
+                DrawTexture(sonic[selectedFormat], 350, 0, WHITE);
+            }
+            else 
+            {
+                DrawRectangleLines(488, 165, 200, 110, DARKGRAY);
+                DrawText("FORMAT", 550, 180, 20, MAROON);
+                DrawText("NOT SUPPORTED", 500, 210, 20, MAROON);
+                DrawText("ON YOUR GPU", 520, 240, 20, MAROON);
+            }
+            
+            DrawText("Select texture format (use cursor keys):", 40, 26, 10, DARKGRAY);
+            DrawText("Required GPU memory size (VRAM):", 40, 442, 10, DARKGRAY);
+            DrawText(FormatText("%4.0f KB", textureSizes[selectedFormat]), 240, 435, 20, DARKBLUE);
+            
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    for (int i = 0; i < NUM_TEXTURES; i++) UnloadTexture(sonic[i]);
+
+    CloseWindow();                  // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

examples/textures_raw_data.c

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+/*******************************************************************************************
+*
+*   raylib [textures] example - Load textures from raw data
+*
+*   NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
+*
+*   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 <stdlib.h>     // Required for malloc() and free()
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture from raw data");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+ 
+    // Load RAW image data (512x512, 32bit RGBA, no file header)
+    Image sonicRaw = LoadImageRaw("resources/texture_formats/sonic_R8G8B8A8.raw", 512, 512, UNCOMPRESSED_R8G8B8A8, 0);
+    Texture2D sonic = LoadTextureFromImage(sonicRaw);   // Upload CPU (RAM) image to GPU (VRAM)
+    UnloadImage(sonicRaw);                              // Unload CPU (RAM) image data
+    
+    // Generate a checked texture by code (1024x1024 pixels)
+    int width = 1024;
+    int height = 1024;
+    
+    Color *pixels = (Color *)malloc(width*height*sizeof(Color));
+    
+    for (int y = 0; y < height; y++)
+    {
+        for (int x = 0; x < width; x++)
+        {
+            if (((x/32+y/32)/1)%2 == 0) pixels[y*height + x] = DARKBLUE;
+            else pixels[y*height + x] = SKYBLUE;
+        }
+    }
+    
+    // Load pixels data into an image structure and create texture
+    Image checkedIm = LoadImageEx(pixels, width, height);
+    Texture2D checked = LoadTextureFromImage(checkedIm);
+    UnloadImage(checkedIm);     // Unload CPU (RAM) image data
+    free(pixels);               // Unload CPU (RAM) pixels data
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // TODO: Update your variables here
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(checked, screenWidth/2 - checked.width/2, screenHeight/2 - checked.height/2, Fade(WHITE, 0.3f));
+            DrawTexture(sonic, 330, -20, WHITE);
+
+            DrawText("CHECKED TEXTURE ", 84, 100, 30, DARKBLUE);
+            DrawText("GENERATED by CODE", 72, 164, 30, DARKBLUE);
+            DrawText("and RAW IMAGE LOADING", 46, 226, 30, DARKBLUE);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(sonic);       // Texture unloading
+    UnloadTexture(checked);     // Texture unloading
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}