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Merge pull request #1005 from eligovision/OpenSceneGraph-3.6_webgl_compr_tex

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ASTC Compression Support Added; GLExtensions improvements
This commit is contained in:
Robert Osfield
2021-03-29 10:32:13 +01:00
committed by GitHub
parent beb9bc3cf2 e260dfb582
commit 78cb12b531
3 changed files with 323 additions and 108 deletions
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2
include/osg/GLExtensions
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@@ -530,6 +530,7 @@ class OSG_EXPORT GLExtensions : public osg::Referenced
bool isTextureCompressionETC2Supported;
bool isTextureCompressionRGTCSupported;
bool isTextureCompressionPVRTCSupported;
bool isTextureCompressionASTCSupported;
bool isTextureMirroredRepeatSupported;
bool isTextureEdgeClampSupported;
bool isTextureBorderClampSupported;
@@ -539,6 +540,7 @@ class OSG_EXPORT GLExtensions : public osg::Referenced
bool isShadowSupported;
bool isShadowAmbientSupported;
bool isTextureMaxLevelSupported;
bool isTextureLODBiasSupported;
GLint maxTextureSize;
bool isClientStorageSupported;
bool isTextureIntegerEXTSupported;

37
src/osg/GLExtensions.cpp
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@@ -850,13 +850,26 @@ GLExtensions::GLExtensions(unsigned int in_contextID):
isTextureFilterAnisotropicSupported = validContext && isGLExtensionSupported(contextID,"GL_EXT_texture_filter_anisotropic");
isTextureSwizzleSupported = validContext && isGLExtensionSupported(contextID,"GL_ARB_texture_swizzle");
isTextureCompressionARBSupported = validContext && (builtInSupport || isGLExtensionOrVersionSupported(contextID,"GL_ARB_texture_compression", 1.3f));
isTextureCompressionS3TCSupported = validContext && (isGLExtensionSupported(contextID,"GL_EXT_texture_compression_s3tc") || isGLExtensionSupported(contextID, "GL_S3_s3tc"));
isTextureCompressionPVRTC2BPPSupported = validContext && isGLExtensionSupported(contextID,"GL_IMG_texture_compression_pvrtc");
isTextureCompressionS3TCSupported = validContext && (isGLExtensionSupported(contextID,"GL_EXT_texture_compression_s3tc") ||
isGLExtensionSupported(contextID, "GL_S3_s3tc") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_s3tc") ||
isGLExtensionSupported(contextID, "MOZ_WEBGL_compressed_texture_s3tc") ||
isGLExtensionSupported(contextID, "WEBKIT_WEBGL_compressed_texture_s3tc") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_s3tc_srgb") /* TODO: separate flag */);
isTextureCompressionPVRTC2BPPSupported = validContext && (isGLExtensionSupported(contextID,"GL_IMG_texture_compression_pvrtc") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_pvrtc"));
isTextureCompressionPVRTC4BPPSupported = isTextureCompressionPVRTC2BPPSupported;//covered by same extension
isTextureCompressionETCSupported = validContext && isGLExtensionSupported(contextID,"GL_OES_compressed_ETC1_RGB8_texture");
isTextureCompressionETC2Supported = validContext && isGLExtensionSupported(contextID,"GL_ARB_ES3_compatibility");
isTextureCompressionETCSupported = validContext && (isGLExtensionSupported(contextID, "GL_OES_compressed_ETC1_RGB8_texture") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_etc1"));
isTextureCompressionETC2Supported = validContext && (isGLExtensionSupported(contextID,"GL_ARB_ES3_compatibility") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_etc"));
isTextureCompressionRGTCSupported = validContext && isGLExtensionSupported(contextID,"GL_EXT_texture_compression_rgtc");
isTextureCompressionPVRTCSupported = validContext && isGLExtensionSupported(contextID,"GL_IMG_texture_compression_pvrtc");
isTextureCompressionPVRTCSupported = isTextureCompressionPVRTC2BPPSupported;//covered by same extension
isTextureCompressionASTCSupported = validContext && (isGLExtensionSupported(contextID, "GL_KHR_texture_compression_astc_hdr") ||
isGLExtensionSupported(contextID, "GL_KHR_texture_compression_astc_ldr") ||
isGLExtensionSupported(contextID, "GL_OES_texture_compression_astc") ||
isGLExtensionSupported(contextID, "WEBGL_compressed_texture_astc"));
isTextureMirroredRepeatSupported = validContext &&
(builtInSupport ||
@@ -898,18 +911,22 @@ GLExtensions::GLExtensions(unsigned int in_contextID):
{
maxTextureSize = osg_max_size;
}
#if defined(__EMSCRIPTEN__)
isTextureMaxLevelSupported = (glVersion >= 3.0f); // WebGL 2.0 (OpenGL ES 3.0)
isTextureLODBiasSupported = (glVersion >= 3.0f) || isGLExtensionSupported(contextID, "GL_EXT_texture_lod_bias");
#else
isTextureMaxLevelSupported = (glVersion >= 1.2f);
isTextureLODBiasSupported = (glVersion >= 1.2f) || isGLExtensionSupported(contextID, "GL_EXT_texture_lod_bias");
#endif
isTextureStorageEnabled = validContext && ((glVersion >= 4.2f) || isGLExtensionSupported(contextID, "GL_ARB_texture_storage"));
if (isTextureStorageEnabled)
{
std::string value;
if (getEnvVar("OSG_GL_TEXTURE_STORAGE", value))
{
if (value=="OFF" || value=="DISABLE") isTextureStorageEnabled = false;
else isTextureStorageEnabled = true;
}
if (getEnvVar("OSG_GL_TEXTURE_STORAGE", value) && (value == "OFF" || value == "DISABLE"))
isTextureStorageEnabled = false;
}
setGLExtensionFuncPtr(glTexStorage1D,"glTexStorage1D","glTexStorage1DARB", validContext);

392
src/osg/Texture.cpp
View File

@@ -176,30 +176,60 @@ InternalPixelRelations sizedDepthAndStencilInternalFormats[] = {
};
InternalPixelRelations compressedInternalFormats[] = {
// , { GL_COMPRESSED_RED , GL_RED , GL_COMPRESSED_RED }
// , { GL_COMPRESSED_RG , GL_RG , GL_COMPRESSED_RG }
{ GL_COMPRESSED_RGB , GL_RGB , GL_COMPRESSED_RGB }
, { GL_COMPRESSED_RGBA , GL_RGBA , GL_COMPRESSED_RGBA }
, { GL_COMPRESSED_SRGB , GL_RGB , GL_COMPRESSED_SRGB }
, { GL_COMPRESSED_SRGB_ALPHA , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA }
, { GL_COMPRESSED_RED_RGTC1_EXT , GL_RED , GL_COMPRESSED_RED_RGTC1_EXT }
, { GL_COMPRESSED_SIGNED_RED_RGTC1_EXT , GL_RED , GL_COMPRESSED_SIGNED_RED_RGTC1_EXT }
// , { GL_COMPRESSED_RG_RGTC2 , GL_RG , GL_COMPRESSED_RG_RGTC2 }
// , { GL_COMPRESSED_SIGNED_RG_RGTC2 , GL_RG , GL_COMPRESSED_SIGNED_RG_RGTC2 }
// , { GL_COMPRESSED_RGBA_BPTC_UNORM , GL_RGBA , GL_COMPRESSED_RGBA_BPTC_UNORM }
// , { GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM }
// , { GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT , GL_RGB , GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT }
// , { GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT , GL_RGB , GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT }
// , { GL_COMPRESSED_RED , GL_RED , GL_COMPRESSED_RED }
// , { GL_COMPRESSED_RG , GL_RG , GL_COMPRESSED_RG }
{ GL_COMPRESSED_RGB , GL_RGB , GL_COMPRESSED_RGB }
, { GL_COMPRESSED_RGBA , GL_RGBA , GL_COMPRESSED_RGBA }
, { GL_COMPRESSED_SRGB , GL_RGB , GL_COMPRESSED_SRGB }
, { GL_COMPRESSED_SRGB_ALPHA , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA }
, { GL_COMPRESSED_RED_RGTC1_EXT , GL_RED , GL_COMPRESSED_RED_RGTC1_EXT }
, { GL_COMPRESSED_SIGNED_RED_RGTC1_EXT , GL_RED , GL_COMPRESSED_SIGNED_RED_RGTC1_EXT }
// , { GL_COMPRESSED_RG_RGTC2 , GL_RG , GL_COMPRESSED_RG_RGTC2 }
// , { GL_COMPRESSED_SIGNED_RG_RGTC2 , GL_RG , GL_COMPRESSED_SIGNED_RG_RGTC2 }
// , { GL_COMPRESSED_RGBA_BPTC_UNORM , GL_RGBA , GL_COMPRESSED_RGBA_BPTC_UNORM }
// , { GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM }
// , { GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT , GL_RGB , GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT }
// , { GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT , GL_RGB , GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT }
, { GL_COMPRESSED_RGB_S3TC_DXT1_EXT , GL_RGB , GL_COMPRESSED_RGB_S3TC_DXT1_EXT }
, { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT , GL_RGBA , GL_COMPRESSED_RGBA_S3TC_DXT1_EXT }
, { GL_COMPRESSED_RGBA_S3TC_DXT3_EXT , GL_RGBA , GL_COMPRESSED_RGBA_S3TC_DXT3_EXT }
, { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT , GL_RGBA , GL_COMPRESSED_RGBA_S3TC_DXT5_EXT }
, { GL_COMPRESSED_RGB_S3TC_DXT1_EXT , GL_RGB , GL_COMPRESSED_RGB_S3TC_DXT1_EXT }
, { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT , GL_RGBA , GL_COMPRESSED_RGBA_S3TC_DXT1_EXT }
, { GL_COMPRESSED_RGBA_S3TC_DXT3_EXT , GL_RGBA , GL_COMPRESSED_RGBA_S3TC_DXT3_EXT }
, { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT , GL_RGBA , GL_COMPRESSED_RGBA_S3TC_DXT5_EXT }
, { GL_COMPRESSED_SRGB_S3TC_DXT1_EXT , GL_RGB , GL_COMPRESSED_SRGB_S3TC_DXT1_EXT }
, { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT }
, { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT }
, { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT }
, { GL_COMPRESSED_SRGB_S3TC_DXT1_EXT , GL_RGB , GL_COMPRESSED_SRGB_S3TC_DXT1_EXT }
, { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT }
, { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT }
, { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT , GL_RGBA , GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT }
, { GL_COMPRESSED_RGBA_ASTC_4x4_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_4x4_KHR }
, { GL_COMPRESSED_RGBA_ASTC_5x4_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_5x4_KHR }
, { GL_COMPRESSED_RGBA_ASTC_5x5_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_5x5_KHR }
, { GL_COMPRESSED_RGBA_ASTC_6x5_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_6x5_KHR }
, { GL_COMPRESSED_RGBA_ASTC_6x6_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_6x6_KHR }
, { GL_COMPRESSED_RGBA_ASTC_8x5_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_8x5_KHR }
, { GL_COMPRESSED_RGBA_ASTC_8x6_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_8x6_KHR }
, { GL_COMPRESSED_RGBA_ASTC_8x8_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_8x8_KHR }
, { GL_COMPRESSED_RGBA_ASTC_10x5_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_10x5_KHR }
, { GL_COMPRESSED_RGBA_ASTC_10x6_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_10x6_KHR }
, { GL_COMPRESSED_RGBA_ASTC_10x8_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_10x8_KHR }
, { GL_COMPRESSED_RGBA_ASTC_10x10_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_10x10_KHR }
, { GL_COMPRESSED_RGBA_ASTC_12x10_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_12x10_KHR }
, { GL_COMPRESSED_RGBA_ASTC_12x12_KHR , GL_RGBA , GL_COMPRESSED_RGBA_ASTC_12x12_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR }
, { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR , GL_RGBA , GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR }
};
bool isSizedInternalFormat(GLint internalFormat)
@@ -289,57 +319,109 @@ void Texture::TextureProfile::computeSize()
switch(_internalFormat)
{
case(1): numBitsPerTexel = 8; break;
case(GL_ALPHA): numBitsPerTexel = 8; break;
case(GL_LUMINANCE): numBitsPerTexel = 8; break;
case(GL_INTENSITY): numBitsPerTexel = 8; break;
case 1:
case GL_ALPHA:
case GL_LUMINANCE:
case GL_INTENSITY:
case GL_RED:
numBitsPerTexel = 8;
break;
case(GL_LUMINANCE_ALPHA): numBitsPerTexel = 16; break;
case(2): numBitsPerTexel = 16; break;
case 2:
case GL_LUMINANCE_ALPHA:
case GL_RG:
numBitsPerTexel = 16;
break;
case(GL_RGB): numBitsPerTexel = 24; break;
case(GL_BGR): numBitsPerTexel = 24; break;
case(3): numBitsPerTexel = 24; break;
case 3:
case GL_RGB:
case GL_BGR:
numBitsPerTexel = 24;
break;
case(GL_RGBA): numBitsPerTexel = 32; break;
case(4): numBitsPerTexel = 32; break;
case 4:
case GL_RGBA:
case GL_BGRA:
numBitsPerTexel = 32;
break;
case(GL_COMPRESSED_ALPHA_ARB): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_INTENSITY_ARB): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_LUMINANCE_ALPHA_ARB): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_RGB_S3TC_DXT1_EXT): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_SRGB_S3TC_DXT1_EXT): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT): numBitsPerTexel = 4; break;
case GL_COMPRESSED_ALPHA_ARB: numBitsPerTexel = 4; break;
case GL_COMPRESSED_INTENSITY_ARB: numBitsPerTexel = 4; break;
case GL_COMPRESSED_LUMINANCE_ALPHA_ARB: numBitsPerTexel = 4; break;
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: numBitsPerTexel = 4; break;
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: numBitsPerTexel = 4; break;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: numBitsPerTexel = 4; break;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: numBitsPerTexel = 4; break;
case(GL_COMPRESSED_RGB_ARB): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT): numBitsPerTexel = 8; break;
case GL_COMPRESSED_RGB_ARB: numBitsPerTexel = 8; break;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: numBitsPerTexel = 8; break;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: numBitsPerTexel = 8; break;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: numBitsPerTexel = 8; break;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: numBitsPerTexel = 8; break;
case(GL_COMPRESSED_SIGNED_RED_RGTC1_EXT): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_RED_RGTC1_EXT): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_RED_GREEN_RGTC2_EXT): numBitsPerTexel = 8; break;
case GL_COMPRESSED_SIGNED_RED_RGTC1_EXT: numBitsPerTexel = 4; break;
case GL_COMPRESSED_RED_RGTC1_EXT: numBitsPerTexel = 4; break;
case GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT: numBitsPerTexel = 8; break;
case GL_COMPRESSED_RED_GREEN_RGTC2_EXT: numBitsPerTexel = 8; break;
case(GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG): numBitsPerTexel = 2; break;
case(GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG): numBitsPerTexel = 2; break;
case(GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG): numBitsPerTexel = 4; break;
case GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG: numBitsPerTexel = 2; break;
case GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG: numBitsPerTexel = 2; break;
case GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG: numBitsPerTexel = 4; break;
case GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG: numBitsPerTexel = 4; break;
case(GL_ETC1_RGB8_OES): numBitsPerTexel = 4; break;
case GL_ETC1_RGB8_OES: numBitsPerTexel = 4; break;
case(GL_COMPRESSED_RGB8_ETC2): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_SRGB8_ETC2): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_RGBA8_ETC2_EAC): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_R11_EAC): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_SIGNED_R11_EAC): numBitsPerTexel = 4; break;
case(GL_COMPRESSED_RG11_EAC): numBitsPerTexel = 8; break;
case(GL_COMPRESSED_SIGNED_RG11_EAC): numBitsPerTexel = 8; break;
case GL_COMPRESSED_RGB8_ETC2: numBitsPerTexel = 4; break;
case GL_COMPRESSED_SRGB8_ETC2: numBitsPerTexel = 4; break;
case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2: numBitsPerTexel = 8; break;
case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2: numBitsPerTexel = 8; break;
case GL_COMPRESSED_RGBA8_ETC2_EAC: numBitsPerTexel = 8; break;
case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC: numBitsPerTexel = 8; break;
case GL_COMPRESSED_R11_EAC: numBitsPerTexel = 4; break;
case GL_COMPRESSED_SIGNED_R11_EAC: numBitsPerTexel = 4; break;
case GL_COMPRESSED_RG11_EAC: numBitsPerTexel = 8; break;
case GL_COMPRESSED_SIGNED_RG11_EAC: numBitsPerTexel = 8; break;
// ASTC
case GL_COMPRESSED_RGBA_ASTC_4x4_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:
case GL_COMPRESSED_RGBA_ASTC_5x4_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:
case GL_COMPRESSED_RGBA_ASTC_5x5_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:
case GL_COMPRESSED_RGBA_ASTC_6x5_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:
case GL_COMPRESSED_RGBA_ASTC_6x6_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:
case GL_COMPRESSED_RGBA_ASTC_8x5_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:
case GL_COMPRESSED_RGBA_ASTC_8x6_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:
case GL_COMPRESSED_RGBA_ASTC_8x8_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:
case GL_COMPRESSED_RGBA_ASTC_10x5_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:
case GL_COMPRESSED_RGBA_ASTC_10x6_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:
case GL_COMPRESSED_RGBA_ASTC_10x8_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:
case GL_COMPRESSED_RGBA_ASTC_10x10_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:
case GL_COMPRESSED_RGBA_ASTC_12x10_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:
case GL_COMPRESSED_RGBA_ASTC_12x12_KHR:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:
{
_size = 0;
for (int i = 0; i < std::max(_numMipmapLevels, 1); ++i)
{
GLint blockSize;
GLint size;
getCompressedSize(_internalFormat, _width/(1 << i), _height/(1 << i), _depth, blockSize, size);
_size += size;
}
return;
}
}
_size = (unsigned int)(ceil(double(_width * _height * _depth * numBitsPerTexel)/8.0));
@@ -1786,39 +1868,67 @@ bool Texture::isCompressedInternalFormat() const
bool Texture::isCompressedInternalFormat(GLint internalFormat)
{
switch(internalFormat)
switch (internalFormat)
{
case(GL_COMPRESSED_ALPHA_ARB):
case(GL_COMPRESSED_INTENSITY_ARB):
case(GL_COMPRESSED_LUMINANCE_ALPHA_ARB):
case(GL_COMPRESSED_LUMINANCE_ARB):
case(GL_COMPRESSED_RGBA_ARB):
case(GL_COMPRESSED_RGB_ARB):
case(GL_COMPRESSED_RGB_S3TC_DXT1_EXT):
case(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT):
case(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT):
case(GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT):
case(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT):
case(GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT):
case(GL_COMPRESSED_SIGNED_RED_RGTC1_EXT):
case(GL_COMPRESSED_RED_RGTC1_EXT):
case(GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT):
case(GL_COMPRESSED_RED_GREEN_RGTC2_EXT):
case(GL_ETC1_RGB8_OES):
case(GL_COMPRESSED_RGB8_ETC2):
case(GL_COMPRESSED_SRGB8_ETC2):
case(GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2):
case(GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2):
case(GL_COMPRESSED_RGBA8_ETC2_EAC):
case(GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC):
case(GL_COMPRESSED_R11_EAC):
case(GL_COMPRESSED_SIGNED_R11_EAC):
case(GL_COMPRESSED_RG11_EAC):
case(GL_COMPRESSED_SIGNED_RG11_EAC):
case(GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG):
case(GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG):
case(GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG):
case(GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG):
case (GL_COMPRESSED_ALPHA_ARB):
case (GL_COMPRESSED_INTENSITY_ARB):
case (GL_COMPRESSED_LUMINANCE_ALPHA_ARB):
case (GL_COMPRESSED_LUMINANCE_ARB):
case (GL_COMPRESSED_RGBA_ARB):
case (GL_COMPRESSED_RGB_ARB):
case (GL_COMPRESSED_RGB_S3TC_DXT1_EXT):
case (GL_COMPRESSED_RGBA_S3TC_DXT1_EXT):
case (GL_COMPRESSED_RGBA_S3TC_DXT3_EXT):
case (GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT):
case (GL_COMPRESSED_RGBA_S3TC_DXT5_EXT):
case (GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT):
case (GL_COMPRESSED_SIGNED_RED_RGTC1_EXT):
case (GL_COMPRESSED_RED_RGTC1_EXT):
case (GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT):
case (GL_COMPRESSED_RED_GREEN_RGTC2_EXT):
case (GL_ETC1_RGB8_OES):
case (GL_COMPRESSED_RGB8_ETC2):
case (GL_COMPRESSED_SRGB8_ETC2):
case (GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2):
case (GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2):
case (GL_COMPRESSED_RGBA8_ETC2_EAC):
case (GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC):
case (GL_COMPRESSED_R11_EAC):
case (GL_COMPRESSED_SIGNED_R11_EAC):
case (GL_COMPRESSED_RG11_EAC):
case (GL_COMPRESSED_SIGNED_RG11_EAC):
case (GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG):
case (GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG):
case (GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG):
case (GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG):
case (GL_COMPRESSED_RGBA_ASTC_4x4_KHR):
case (GL_COMPRESSED_RGBA_ASTC_5x4_KHR):
case (GL_COMPRESSED_RGBA_ASTC_5x5_KHR):
case (GL_COMPRESSED_RGBA_ASTC_6x5_KHR):
case (GL_COMPRESSED_RGBA_ASTC_6x6_KHR):
case (GL_COMPRESSED_RGBA_ASTC_8x5_KHR):
case (GL_COMPRESSED_RGBA_ASTC_8x6_KHR):
case (GL_COMPRESSED_RGBA_ASTC_8x8_KHR):
case (GL_COMPRESSED_RGBA_ASTC_10x5_KHR):
case (GL_COMPRESSED_RGBA_ASTC_10x6_KHR):
case (GL_COMPRESSED_RGBA_ASTC_10x8_KHR):
case (GL_COMPRESSED_RGBA_ASTC_10x10_KHR):
case (GL_COMPRESSED_RGBA_ASTC_12x10_KHR):
case (GL_COMPRESSED_RGBA_ASTC_12x12_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR):
case (GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR):
return true;
default:
return false;
@@ -1862,7 +1972,7 @@ void Texture::getCompressedSize(GLenum internalFormat, GLint width, GLint height
size = widthBlocks * heightBlocks * ((blockSize * bpp) / 8);
return;
}
}
else if (internalFormat == GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG || internalFormat == GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG)
{
blockSize = 4 * 4; // Pixel by pixel block size for 4bpp
@@ -1879,6 +1989,91 @@ void Texture::getCompressedSize(GLenum internalFormat, GLint width, GLint height
size = widthBlocks * heightBlocks * ((blockSize * bpp) / 8);
return;
}
// ASTC compression (block size is always equal to 16)
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_4x4_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR)
{
blockSize = 16;
size = ceil(width/4.0)*ceil(height/4.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_5x4_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR)
{
blockSize = 16;
size = ceil(width/5.0)*ceil(height/4.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_5x5_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR)
{
blockSize = 16;
size = ceil(width/5.0)*ceil(height/5.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_6x5_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR)
{
blockSize = 16;
size = ceil(width/6.0)*ceil(height/5.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_6x6_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR)
{
blockSize = 16;
size = ceil(width/6.0)*ceil(height/6.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_8x5_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR)
{
blockSize = 16;
size = ceil(width/8.0)*ceil(height/5.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_8x6_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR)
{
blockSize = 16;
size = ceil(width/8.0)*ceil(height/6.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_8x8_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR)
{
blockSize = 16;
size = ceil(width/8.0)*ceil(height/8.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_10x5_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR)
{
blockSize = 16;
size = ceil(width/10.0)*ceil(height/5.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_10x6_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR)
{
blockSize = 16;
size = ceil(width/10.0)*ceil(height/6.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_10x8_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR)
{
blockSize = 16;
size = ceil(width/10.0)*ceil(height/8.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_10x10_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR)
{
blockSize = 16;
size = ceil(width/10.0)*ceil(height/10.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_12x10_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR)
{
blockSize = 16;
size = ceil(width/12.0)*ceil(height/10.0)*blockSize;
return;
}
else if (internalFormat == GL_COMPRESSED_RGBA_ASTC_12x12_KHR || internalFormat == GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR)
{
blockSize = 16;
size = ceil(width/12.0)*ceil(height/12.0)*blockSize;
return;
}
else
{
OSG_WARN<<"Texture::getCompressedSize(...) : cannot compute correct size of compressed format ("<<internalFormat<<") returning 0."<<std::endl;
@@ -2032,7 +2227,8 @@ void Texture::applyTexParameters(GLenum target, State& state) const
glTexParameterf(target, GL_TEXTURE_MAX_LOD, _maxlod);
}
glTexParameterf(target, GL_TEXTURE_LOD_BIAS, _lodbias);
if (extensions->isTextureLODBiasSupported)
glTexParameterf(target, GL_TEXTURE_LOD_BIAS, _lodbias);
getTextureParameterDirty(state.getContextID()) = false;