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-rw-r--r--examples/textures_formats_loading.lua217
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diff --git a/examples/textures_formats_loading.lua b/examples/textures_formats_loading.lua
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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 1.6 (www.raylib.com)
+-- raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+--
+-- Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
+--
+-------------------------------------------------------------------------------------------
+
+NUM_TEXTURES = 24
+
+PNG_R8G8B8A8 = 1
+PVR_GRAYSCALE = 2
+PVR_GRAY_ALPHA = 3
+PVR_R5G6B5 = 4
+PVR_R5G5B5A1 = 5
+PVR_R4G4B4A4 = 6
+DDS_R5G6B5 = 7
+DDS_R5G5B5A1 = 8
+DDS_R4G4B4A4 = 9
+DDS_R8G8B8A8 = 10
+DDS_DXT1_RGB = 11
+DDS_DXT1_RGBA = 12
+DDS_DXT3_RGBA = 13
+DDS_DXT5_RGBA = 14
+PKM_ETC1_RGB = 15
+PKM_ETC2_RGB = 16
+PKM_ETC2_EAC_RGBA = 17
+KTX_ETC1_RGB = 18
+KTX_ETC2_RGB = 19
+KTX_ETC2_EAC_RGBA = 20
+ASTC_4x4_LDR = 21
+ASTC_8x8_LDR = 22
+PVR_PVRT_RGB = 23
+PVR_PVRT_RGBA = 24
+
+local 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"
+}
+
+-- Initialization
+-------------------------------------------------------------------------------------------
+local screenWidth = 800
+local screenHeight = 450
+
+InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture formats loading")
+
+-- NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+
+local sonic = {}
+
+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")
+
+local selectedFormat = PNG_R8G8B8A8
+
+local selectRecs = {}
+
+for i = 1, NUM_TEXTURES do
+ if ((i - 1) < NUM_TEXTURES//2) then selectRecs[i] = Rectangle(40, 30 + 32*(i - 1), 150, 30)
+ else selectRecs[i] = Rectangle(40 + 152, 30 + 32*((i - 1) - NUM_TEXTURES//2), 150, 30) end
+end
+
+-- Texture sizes in KB
+local textureSizes = {
+ 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 not WindowShouldClose() do -- Detect window close button or ESC key
+ -- Update
+ ---------------------------------------------------------------------------------------
+ if (IsKeyPressed(KEY.DOWN)) then
+ selectedFormat = selectedFormat + 1
+ if (selectedFormat > NUM_TEXTURES) then selectedFormat = 1 end
+ elseif (IsKeyPressed(KEY.UP)) then
+ selectedFormat = selectedFormat - 1
+ if (selectedFormat < 1) then selectedFormat = NUM_TEXTURES end
+ elseif (IsKeyPressed(KEY.RIGHT)) then
+ if (selectedFormat < NUM_TEXTURES//2) then selectedFormat = selectedFormat + NUM_TEXTURES//2 end
+ elseif (IsKeyPressed(KEY.LEFT)) then
+ if (selectedFormat > NUM_TEXTURES//2) then selectedFormat = selectedFormat - NUM_TEXTURES//2 end
+ end
+ ---------------------------------------------------------------------------------------
+
+ -- Draw
+ ---------------------------------------------------------------------------------------
+
+ BeginDrawing()
+
+ ClearBackground(RAYWHITE)
+
+ -- Draw rectangles
+ for i = 1, NUM_TEXTURES do
+ if (i == selectedFormat) then
+ 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)
+ end
+ end
+
+ -- Draw selected texture
+ if (sonic[selectedFormat].id ~= 0) then DrawTexture(sonic[selectedFormat], 350, -10, 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)
+ end
+
+ DrawText("Select texture format (use cursor keys):", 40, 10, 10, DARKGRAY)
+ DrawText("Required GPU memory size (VRAM):", 40, 427, 10, DARKGRAY)
+ DrawText(string.format("%4.0f KB", textureSizes[selectedFormat]), 240, 420, 20, DARKBLUE)
+
+ EndDrawing()
+ ---------------------------------------------------------------------------------------
+end
+
+-- De-Initialization
+-------------------------------------------------------------------------------------------
+for i = 1, NUM_TEXTURES do UnloadTexture(sonic[i]) end
+
+CloseWindow() -- Close window and OpenGL context
+------------------------------------------------------------------------------------------- \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-29 10:04:50 +0000