Retain GLUtil.maxTextureSize

This commit is contained in:
arkon 2021-09-05 14:34:54 -04:00
parent ec4e631760
commit ee20787c5e

View file

@ -5,50 +5,43 @@ import javax.microedition.khronos.egl.EGLConfig
import javax.microedition.khronos.egl.EGLContext
import kotlin.math.max
class GLUtil private constructor() {
companion object {
// Safe minimum default size
private const val IMAGE_MAX_BITMAP_DIMENSION = 2048
object GLUtil {
val maxTextureSize: Int by lazy {
// Get EGL Display
val egl = EGLContext.getEGL() as EGL10
val display = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY)
val maxTextureSize: Int
get() {
// Get EGL Display
val egl = EGLContext.getEGL() as EGL10
val display = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY)
// Initialise
val version = IntArray(2)
egl.eglInitialize(display, version)
// Initialise
val version = IntArray(2)
egl.eglInitialize(display, version)
// Query total number of configurations
val totalConfigurations = IntArray(1)
egl.eglGetConfigs(display, null, 0, totalConfigurations)
// Query total number of configurations
val totalConfigurations = IntArray(1)
egl.eglGetConfigs(display, null, 0, totalConfigurations)
// Query actual list configurations
val configurationsList = arrayOfNulls<EGLConfig>(totalConfigurations[0])
egl.eglGetConfigs(display, configurationsList, totalConfigurations[0], totalConfigurations)
// Query actual list configurations
val configurationsList = arrayOfNulls<EGLConfig>(totalConfigurations[0])
egl.eglGetConfigs(display, configurationsList, totalConfigurations[0], totalConfigurations)
val textureSize = IntArray(1)
var maximumTextureSize = 0
val textureSize = IntArray(1)
var maximumTextureSize = 0
// Iterate through all the configurations to located the maximum texture size
for (i in 0 until totalConfigurations[0]) {
// Only need to check for width since opengl textures are always squared
egl.eglGetConfigAttrib(display, configurationsList[i], EGL10.EGL_MAX_PBUFFER_WIDTH, textureSize)
// Iterate through all the configurations to located the maximum texture size
for (i in 0 until totalConfigurations[0]) {
// Only need to check for width since opengl textures are always squared
egl.eglGetConfigAttrib(display, configurationsList[i], EGL10.EGL_MAX_PBUFFER_WIDTH, textureSize)
// Keep track of the maximum texture size
if (maximumTextureSize < textureSize[0]) maximumTextureSize = textureSize[0]
}
// Keep track of the maximum texture size
if (maximumTextureSize < textureSize[0]) maximumTextureSize = textureSize[0]
}
// Release
egl.eglTerminate(display)
// Release
egl.eglTerminate(display)
// Return largest texture size found, or default
return max(maximumTextureSize, IMAGE_MAX_BITMAP_DIMENSION)
}
}
init {
throw InstantiationException("This class is not for instantiation")
// Return largest texture size found, or default
max(maximumTextureSize, IMAGE_MAX_BITMAP_DIMENSION)
}
}
// Safe minimum default size
private const val IMAGE_MAX_BITMAP_DIMENSION = 2048