option to disable mipmap generation

src/main/java/de/bixilon/minosoft/gui/rendering/font/provider/BitmapFontProvider.kt

@@ -36,7 +36,7 @@ class BitmapFontProvider(
 
     init {
         val charRows = data["chars"].asJsonList()
-        val texture = renderWindow.textureManager.staticTextures.createTexture(data["file"].toResourceLocation().texture())
+        val texture = renderWindow.textureManager.staticTextures.createTexture(data["file"].toResourceLocation().texture(), mipmaps = false)
         texture.load(renderWindow.connection.assetsManager)
 
         val height = texture.size.y / charRows.size

src/main/java/de/bixilon/minosoft/gui/rendering/font/provider/LegacyUnicodeFontProvider.kt

@@ -41,7 +41,7 @@ class LegacyUnicodeFontProvider(
                 char += UNICODE_PAGE_SIZE
                 continue
             }
-            val texture = renderWindow.textureManager.staticTextures.createTexture(template.format("%02x".format(page)).toResourceLocation().texture())
+            val texture = renderWindow.textureManager.staticTextures.createTexture(template.format("%02x".format(page)).toResourceLocation().texture(), mipmaps = false)
             for (y in 0 until UNICODE_PAGE_SIZE / CHAR_SIZE) {
                 val yStart = PIXEL.y * y * CHAR_SIZE
                 val yEnd = PIXEL.y * (y + 1) * CHAR_SIZE

src/main/java/de/bixilon/minosoft/gui/rendering/system/base/texture/TextureArray.kt

@@ -23,7 +23,7 @@ interface TextureArray {
     val state: TextureArrayStates
 
     operator fun get(resourceLocation: ResourceLocation): AbstractTexture?
-    fun createTexture(resourceLocation: ResourceLocation, default: () -> AbstractTexture = { PNGTexture(resourceLocation) }): AbstractTexture
+    fun createTexture(resourceLocation: ResourceLocation, mipmaps: Boolean = true, default: () -> AbstractTexture = { PNGTexture(resourceLocation, generateMipMaps = mipmaps) }): AbstractTexture
 
     fun preLoad()
 

src/main/java/de/bixilon/minosoft/gui/rendering/system/base/texture/texture/AbstractTexture.kt

@@ -38,6 +38,7 @@ interface AbstractTexture {
     var renderData: TextureRenderData
 
     var data: ByteBuffer?
+    val generateMipMaps: Boolean
 
     fun load(assetsManager: AssetsManager)
 
@@ -48,6 +49,9 @@ interface AbstractTexture {
         var data = data!!
 
         images += data
+        if (!generateMipMaps) {
+            return images.toTypedArray()
+        }
 
         for (i in 1 until OpenGLTextureArray.MAX_MIPMAP_LEVELS) {
             val mipMapSize = Vec2i(size.x shr i, size.y shr i)

src/main/java/de/bixilon/minosoft/gui/rendering/system/base/texture/texture/MemoryTexture.kt

@@ -29,6 +29,7 @@ class MemoryTexture(
     override val resourceLocation: ResourceLocation,
     override val size: Vec2i,
     override var properties: ImageProperties = ImageProperties(),
+    override val generateMipMaps: Boolean = true,
     generator: ((x: Int, y: Int) -> RGBColor)? = null,
 ) : AbstractTexture {
     override lateinit var textureArrayUV: Vec2

src/main/java/de/bixilon/minosoft/gui/rendering/system/base/texture/texture/PNGTexture.kt

@@ -29,7 +29,10 @@ import java.nio.ByteBuffer
 import javax.imageio.ImageIO
 
 
-class PNGTexture(override val resourceLocation: ResourceLocation) : AbstractTexture {
+class PNGTexture(
+    override val resourceLocation: ResourceLocation,
+    override val generateMipMaps: Boolean = true,
+) : AbstractTexture {
     override lateinit var renderData: TextureRenderData
 
     override lateinit var textureArrayUV: Vec2

src/main/java/de/bixilon/minosoft/gui/rendering/system/base/texture/texture/SpriteTexture.kt

@@ -30,6 +30,8 @@ class SpriteTexture(private val original: AbstractTexture) : AbstractTexture {
     override var properties: ImageProperties by original::properties
     override var renderData: TextureRenderData by original::renderData
     override val transparency: TextureTransparencies by original::transparency
+    override val generateMipMaps: Boolean
+        get() = original.generateMipMaps
 
     override var state: TextureStates = TextureStates.DECLARED
         private set

src/main/java/de/bixilon/minosoft/gui/rendering/system/opengl/texture/OpenGLTextureArray.kt

@@ -51,7 +51,7 @@ class OpenGLTextureArray(
     private val lastTextureId = IntArray(TEXTURE_RESOLUTION_ID_MAP.size)
 
 
-    override fun createTexture(resourceLocation: ResourceLocation, default: () -> AbstractTexture): AbstractTexture {
+    override fun createTexture(resourceLocation: ResourceLocation, mipmaps: Boolean, default: () -> AbstractTexture): AbstractTexture {
         var texture = textures[resourceLocation]
 
         // load .mcmeta
@@ -136,7 +136,7 @@ class OpenGLTextureArray(
 
 
     @Synchronized
-    private fun loadSingleArray(resolution: Int, textures: MutableList<AbstractTexture>): Int {
+    private fun loadSingleArray(resolution: Int, textures: List<AbstractTexture>): Int {
         val textureId = glGenTextures()
         glBindTexture(GL_TEXTURE_2D_ARRAY, textureId)
         glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_S, GL_REPEAT)
@@ -155,8 +155,15 @@ class OpenGLTextureArray(
 
             val renderData = texture.renderData as OpenGLTextureData
             for ((level, data) in mipMaps.withIndex()) {
-                val size = texture.size shr level
+                if (texture.generateMipMaps) {
-                glTexSubImage3D(GL_TEXTURE_2D_ARRAY, level, 0, 0, renderData.index, size.x, size.y, level + 1, GL_RGBA, GL_UNSIGNED_BYTE, data)
+                    val size = texture.size shr level
+
+                    glTexSubImage3D(GL_TEXTURE_2D_ARRAY, level, 0, 0, renderData.index, size.x, size.y, level + 1, GL_RGBA, GL_UNSIGNED_BYTE, data)
+                } else {
+                    val size = texture.size
+
+                    glTexSubImage3D(GL_TEXTURE_2D_ARRAY, level, 0, 0, renderData.index, size.x, size.y, level + 1, GL_RGBA, GL_UNSIGNED_BYTE, mipMaps[0])
+                }
             }
 
             texture.data = null