OOConcreteTexture.m File Reference

import "OOTextureInternal.h"
import "OOConcreteTexture.h"
import "OOTextureLoader.h"
import "OOCollectionExtractors.h"
import "Universe.h"
import "ResourceManager.h"
import "OOOpenGLExtensionManager.h"
import "OOMacroOpenGL.h"
import "OOCPUInfo.h"
import "OOPixMap.h"
import "OOTextureGenerator.h"

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Classes
category	OOConcreteTexture(Private)

Functions
static BOOL	DecodeFormat (OOTextureDataFormat format, uint32_t options, GLenum *outFormat, GLenum *outInternalFormat, GLenum *outType)

Function Documentation

DecodeFormat()

static BOOL DecodeFormat ( OOTextureDataFormat format, uint32_t options, GLenum * outFormat, GLenum * outInternalFormat, GLenum * outType )

static

Definition at line 671 of file OOConcreteTexture.m.

{
    NSCParameterAssert(outFormat != NULL && outInternalFormat != NULL && outType != NULL);
    
    switch (format)
    {
        case kOOTextureDataRGBA:
            *outFormat = GL_RGBA;
            *outInternalFormat = options & kOOTextureSRGBA ? GL_SRGB_ALPHA : GL_RGBA;
            *outType = RGBA_IMAGE_TYPE;
            return YES;
            
        case kOOTextureDataGrayscale:
            if (options & kOOTextureAlphaMask)
            {
                *outFormat = GL_ALPHA;
                *outInternalFormat = GL_ALPHA8;
            }
            else
            {
                *outFormat = GL_LUMINANCE;
                *outInternalFormat = GL_LUMINANCE8;
            }
            *outType = GL_UNSIGNED_BYTE;
            return YES;
            
        case kOOTextureDataGrayscaleAlpha:
            *outFormat = GL_LUMINANCE_ALPHA;
            *outInternalFormat = GL_LUMINANCE8_ALPHA8;
            *outType = GL_UNSIGNED_BYTE;
            return YES;
            
        default:
            OOLog(kOOLogParameterError, @"Unexpected texture format %u.", format);
            return NO;
    }
}

References kOOLogParameterError, kOOTextureAlphaMask, kOOTextureDataGrayscale, kOOTextureDataGrayscaleAlpha, kOOTextureDataRGBA, kOOTextureSRGBA, and OOLog.

Referenced by OOConcreteTexture::copyPixMapRepresentation, and OOConcreteTexture(Private)::uploadTextureDataWithMipMap:format:.

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