Mirrors/overte
3
0
Fork 0
mirror of https://github.com/overte-org/overte.git synced 2025-07-12 22:59:18 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2
overte/libraries/gpu-gl-common/src/gpu/gl/GLTexelFormat.cpp
Brad Davis 44e2037e15 Quiet warnings, add convenience function
2019-08-12 10:34:07 -07:00

1008 lines
36 KiB
C++
Raw Blame History

//
// Created by Bradley Austin Davis on 2016/05/15
// Copyright 2013-2016 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#include "GLTexelFormat.h"
using namespace gpu;
using namespace gpu::gl;
#if defined(USE_GLES)
// Missing GL formats
#define GL_R16 GL_R16_EXT
#define GL_R16_SNORM GL_R16_SNORM_EXT
#define GL_RG16 GL_RG16_EXT
#define GL_RG16_SNORM GL_RG16_SNORM_EXT
#define GL_RGBA2 GL_RGBA8
#define GL_RGBA16 GL_RGBA16_EXT
#define GL_RGBA16_SNORM GL_RGBA16_SNORM_EXT
#define GL_DEPTH_COMPONENT32 GL_DEPTH_COMPONENT32_OES
#define GL_SLUMINANCE8_EXT GL_SLUMINANCE8_NV
// Missing GL compressed formats
#define GL_COMPRESSED_RED_RGTC1 0x8DBB
#define GL_COMPRESSED_SIGNED_RED_RGTC1 0x8DBC
#define GL_COMPRESSED_RG_RGTC2 0x8DBD
#define GL_COMPRESSED_SIGNED_RG_RGTC2 0x8DBE
#define GL_COMPRESSED_RGBA_BPTC_UNORM 0x8E8C
#define GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM 0x8E8D
#define GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT 0x8E8E
#define GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT 0x8E8F
#endif
bool GLTexelFormat::isCompressed(GLenum format) {
switch (format) {
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
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_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_RED_RGTC1:
case GL_COMPRESSED_RG_RGTC2:
case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
#if defined(USE_GLES)
case GL_COMPRESSED_RGBA_ASTC_4x4:
case GL_COMPRESSED_RGBA_ASTC_5x4:
case GL_COMPRESSED_RGBA_ASTC_5x5:
case GL_COMPRESSED_RGBA_ASTC_6x5:
case GL_COMPRESSED_RGBA_ASTC_6x6:
case GL_COMPRESSED_RGBA_ASTC_8x5:
case GL_COMPRESSED_RGBA_ASTC_8x6:
case GL_COMPRESSED_RGBA_ASTC_8x8:
case GL_COMPRESSED_RGBA_ASTC_10x5:
case GL_COMPRESSED_RGBA_ASTC_10x6:
case GL_COMPRESSED_RGBA_ASTC_10x8:
case GL_COMPRESSED_RGBA_ASTC_10x10:
case GL_COMPRESSED_RGBA_ASTC_12x10:
case GL_COMPRESSED_RGBA_ASTC_12x12:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10:
case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12:
#endif
return true;
default:
return false;
}
}
bool GLTexelFormat::isCompressed() const {
return isCompressed(internalFormat);
}
GLenum GLTexelFormat::evalGLTexelFormatInternal(const gpu::Element& dstFormat) {
GLenum result = GL_RGBA8;
switch (dstFormat.getDimension()) {
case gpu::SCALAR: {
switch (dstFormat.getSemantic()) {
case gpu::RED:
case gpu::RGB:
case gpu::RGBA:
case gpu::SRGB:
case gpu::SRGBA:
switch (dstFormat.getType()) {
case gpu::UINT32:
result = GL_R32UI;
break;
case gpu::INT32:
result = GL_R32I;
break;
case gpu::NUINT32:
result = GL_R8;
break;
case gpu::NINT32:
result = GL_R8_SNORM;
break;
case gpu::FLOAT:
result = GL_R32F;
break;
case gpu::UINT16:
result = GL_R16UI;
break;
case gpu::INT16:
result = GL_R16I;
break;
case gpu::NUINT16:
result = GL_R16;
break;
case gpu::NINT16:
result = GL_R16_SNORM;
break;
case gpu::HALF:
result = GL_R16F;
break;
case gpu::UINT8:
result = GL_R8UI;
break;
case gpu::INT8:
result = GL_R8I;
break;
case gpu::NUINT8:
if ((dstFormat.getSemantic() == gpu::SRGB || dstFormat.getSemantic() == gpu::SRGBA)) {
result = GL_SLUMINANCE8_EXT;
} else {
result = GL_R8;
}
break;
case gpu::NINT8:
result = GL_R8_SNORM;
break;
default:
Q_UNREACHABLE();
break;
}
break;
case gpu::R11G11B10:
// the type should be float
result = GL_R11F_G11F_B10F;
break;
case gpu::RGB9E5:
// the type should be float
result = GL_RGB9_E5;
break;
case gpu::DEPTH:
result = GL_DEPTH_COMPONENT32;
switch (dstFormat.getType()) {
case gpu::UINT32:
case gpu::INT32:
case gpu::NUINT32:
case gpu::NINT32:
result = GL_DEPTH_COMPONENT32;
break;
case gpu::FLOAT:
result = GL_DEPTH_COMPONENT32F;
break;
case gpu::UINT16:
case gpu::INT16:
case gpu::NUINT16:
case gpu::NINT16:
case gpu::HALF:
result = GL_DEPTH_COMPONENT16;
break;
case gpu::UINT8:
case gpu::INT8:
case gpu::NUINT8:
case gpu::NINT8:
result = GL_DEPTH_COMPONENT24;
break;
default:
Q_UNREACHABLE();
break;
}
break;
case gpu::DEPTH_STENCIL:
result = GL_DEPTH24_STENCIL8;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC2: {
switch (dstFormat.getSemantic()) {
case gpu::RGB:
case gpu::RGBA:
case gpu::XY:
switch (dstFormat.getType()) {
case gpu::UINT32:
result = GL_RG32UI;
break;
case gpu::INT32:
result = GL_RG32I;
break;
case gpu::FLOAT:
result = GL_RG32F;
break;
case gpu::UINT16:
result = GL_RG16UI;
break;
case gpu::INT16:
result = GL_RG16I;
break;
case gpu::NUINT16:
result = GL_RG16;
break;
case gpu::NINT16:
result = GL_RG16_SNORM;
break;
case gpu::HALF:
result = GL_RG16F;
break;
case gpu::UINT8:
result = GL_RG8UI;
break;
case gpu::INT8:
result = GL_RG8I;
break;
case gpu::NUINT8:
result = GL_RG8;
break;
case gpu::NINT8:
result = GL_RG8_SNORM;
break;
case gpu::NUINT32:
case gpu::NINT32:
case gpu::NUINT2:
case gpu::NINT2_10_10_10:
case gpu::COMPRESSED:
case gpu::NUM_TYPES: // quiet compiler
Q_UNREACHABLE();
}
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC3: {
switch (dstFormat.getSemantic()) {
case gpu::RGB:
case gpu::RGBA:
result = GL_RGB8;
break;
case gpu::SRGB:
case gpu::SRGBA:
result = GL_SRGB8; // standard 2.2 gamma correction color
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC4: {
switch (dstFormat.getSemantic()) {
case gpu::RGB:
result = GL_RGB8;
break;
case gpu::RGBA:
switch (dstFormat.getType()) {
case gpu::UINT32:
result = GL_RGBA32UI;
break;
case gpu::INT32:
result = GL_RGBA32I;
break;
case gpu::FLOAT:
result = GL_RGBA32F;
break;
case gpu::UINT16:
result = GL_RGBA16UI;
break;
case gpu::INT16:
result = GL_RGBA16I;
break;
case gpu::NUINT16:
result = GL_RGBA16;
break;
case gpu::NINT16:
result = GL_RGBA16_SNORM;
break;
case gpu::HALF:
result = GL_RGBA16F;
break;
case gpu::UINT8:
result = GL_RGBA8UI;
break;
case gpu::INT8:
result = GL_RGBA8I;
break;
case gpu::NUINT8:
result = GL_RGBA8;
break;
case gpu::NUINT2:
result = GL_RGBA2;
break;
case gpu::NINT8:
result = GL_RGBA8_SNORM;
break;
case gpu::NINT2_10_10_10:
result = GL_RGB10_A2;
break;
case gpu::NUINT32:
case gpu::NINT32:
case gpu::COMPRESSED:
case gpu::NUM_TYPES: // quiet compiler
Q_UNREACHABLE();
}
break;
case gpu::SRGB:
result = GL_SRGB8;
break;
case gpu::SRGBA:
result = GL_SRGB8_ALPHA8; // standard 2.2 gamma correction color
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::TILE4x4: {
switch (dstFormat.getSemantic()) {
case gpu::COMPRESSED_BC4_RED:
result = GL_COMPRESSED_RED_RGTC1;
break;
case gpu::COMPRESSED_BC1_SRGB:
result = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT;
break;
case gpu::COMPRESSED_BC1_SRGBA:
result = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
break;
case gpu::COMPRESSED_BC3_SRGBA:
result = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
break;
case gpu::COMPRESSED_BC5_XY:
result = GL_COMPRESSED_RG_RGTC2;
break;
case gpu::COMPRESSED_BC6_RGB:
result = GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT;
break;
case gpu::COMPRESSED_BC7_SRGBA:
result = GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM;
break;
case gpu::COMPRESSED_ETC2_RGB:
result = GL_COMPRESSED_RGB8_ETC2;
break;
case gpu::COMPRESSED_ETC2_SRGB:
result = GL_COMPRESSED_SRGB8_ETC2;
break;
case gpu::COMPRESSED_ETC2_RGB_PUNCHTHROUGH_ALPHA:
result = GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2;
break;
case gpu::COMPRESSED_ETC2_SRGB_PUNCHTHROUGH_ALPHA:
result = GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2;
break;
case gpu::COMPRESSED_ETC2_RGBA:
result = GL_COMPRESSED_RGBA8_ETC2_EAC;
break;
case gpu::COMPRESSED_ETC2_SRGBA:
result = GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC;
break;
case gpu::COMPRESSED_EAC_RED:
result = GL_COMPRESSED_R11_EAC;
break;
case gpu::COMPRESSED_EAC_RED_SIGNED:
result = GL_COMPRESSED_SIGNED_R11_EAC;
break;
case gpu::COMPRESSED_EAC_XY:
result = GL_COMPRESSED_RG11_EAC;
break;
case gpu::COMPRESSED_EAC_XY_SIGNED:
result = GL_COMPRESSED_SIGNED_RG11_EAC;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
return result;
}
GLTexelFormat GLTexelFormat::evalGLTexelFormat(const Element& dstFormat, const Element& srcFormat) {
if (dstFormat != srcFormat) {
GLTexelFormat texel = { GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE };
switch (dstFormat.getDimension()) {
case gpu::SCALAR: {
texel.format = GL_RED;
texel.type = ELEMENT_TYPE_TO_GL[dstFormat.getType()];
switch (dstFormat.getSemantic()) {
case gpu::RED:
case gpu::RGB:
case gpu::RGBA:
texel.internalFormat = GL_R8;
break;
case gpu::DEPTH:
texel.format = GL_DEPTH_COMPONENT;
texel.internalFormat = GL_DEPTH_COMPONENT32;
break;
case gpu::DEPTH_STENCIL:
texel.type = GL_UNSIGNED_INT_24_8;
texel.format = GL_DEPTH_STENCIL;
texel.internalFormat = GL_DEPTH24_STENCIL8;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC2: {
texel.format = GL_RG;
texel.type = ELEMENT_TYPE_TO_GL[dstFormat.getType()];
switch (dstFormat.getSemantic()) {
case gpu::RGB:
case gpu::RGBA:
case gpu::XY:
texel.internalFormat = GL_RG8;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC3: {
texel.format = GL_RGB;
texel.type = ELEMENT_TYPE_TO_GL[dstFormat.getType()];
switch (dstFormat.getSemantic()) {
case gpu::RGB:
case gpu::RGBA:
texel.internalFormat = GL_RGB8;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC4: {
texel.format = GL_RGBA;
texel.type = ELEMENT_TYPE_TO_GL[dstFormat.getType()];
switch (srcFormat.getSemantic()) {
case gpu::BGRA:
case gpu::SBGRA:
#if defined(USE_GLES)
texel.format = GL_RGBA;
#else
texel.format = GL_BGRA;
#endif
break;
case gpu::RGB:
case gpu::RGBA:
case gpu::SRGB:
case gpu::SRGBA:
default:
break;
};
switch (dstFormat.getSemantic()) {
case gpu::RGB:
texel.internalFormat = GL_RGB8;
break;
case gpu::RGBA:
texel.internalFormat = GL_RGBA8;
break;
case gpu::SRGB:
texel.internalFormat = GL_SRGB8;
break;
case gpu::SRGBA:
texel.internalFormat = GL_SRGB8_ALPHA8;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::TILE4x4: {
texel.format = GL_RGBA;
texel.type = ELEMENT_TYPE_TO_GL[srcFormat.getType()];
switch (srcFormat.getSemantic()) {
case gpu::BGRA:
case gpu::SBGRA:
#if !defined(USE_GLES)
texel.format = GL_BGRA;
break;
#endif
case gpu::RGB:
case gpu::RGBA:
case gpu::SRGB:
case gpu::SRGBA:
default:
break;
};
switch (dstFormat.getSemantic()) {
case gpu::COMPRESSED_BC4_RED:
texel.internalFormat = GL_COMPRESSED_RED_RGTC1;
break;
case gpu::COMPRESSED_BC1_SRGB:
texel.internalFormat = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT;
break;
case gpu::COMPRESSED_BC1_SRGBA:
texel.internalFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
break;
case gpu::COMPRESSED_BC3_SRGBA:
texel.internalFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
break;
case gpu::COMPRESSED_BC5_XY:
texel.internalFormat = GL_COMPRESSED_RG_RGTC2;
break;
case gpu::COMPRESSED_BC6_RGB:
texel.internalFormat = GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT;
break;
case gpu::COMPRESSED_BC7_SRGBA:
texel.internalFormat = GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM;
break;
case gpu::COMPRESSED_ETC2_RGB:
texel.internalFormat = GL_COMPRESSED_RGB8_ETC2;
break;
case gpu::COMPRESSED_ETC2_SRGB:
texel.internalFormat = GL_COMPRESSED_SRGB8_ETC2;
break;
case gpu::COMPRESSED_ETC2_RGB_PUNCHTHROUGH_ALPHA:
texel.internalFormat = GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2;
break;
case gpu::COMPRESSED_ETC2_SRGB_PUNCHTHROUGH_ALPHA:
texel.internalFormat = GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2;
break;
case gpu::COMPRESSED_ETC2_RGBA:
texel.internalFormat = GL_COMPRESSED_RGBA8_ETC2_EAC;
break;
case gpu::COMPRESSED_ETC2_SRGBA:
texel.internalFormat = GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC;
break;
case gpu::COMPRESSED_EAC_RED:
texel.internalFormat = GL_COMPRESSED_R11_EAC;
break;
case gpu::COMPRESSED_EAC_RED_SIGNED:
texel.internalFormat = GL_COMPRESSED_SIGNED_R11_EAC;
break;
case gpu::COMPRESSED_EAC_XY:
texel.internalFormat = GL_COMPRESSED_RG11_EAC;
break;
case gpu::COMPRESSED_EAC_XY_SIGNED:
texel.internalFormat = GL_COMPRESSED_SIGNED_RG11_EAC;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
return texel;
} else {
GLTexelFormat texel = { GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE };
switch (dstFormat.getDimension()) {
case gpu::SCALAR: {
texel.format = GL_RED;
texel.type = ELEMENT_TYPE_TO_GL[dstFormat.getType()];
switch (dstFormat.getSemantic()) {
case gpu::RED:
case gpu::RGB:
case gpu::RGBA:
case gpu::SRGB:
case gpu::SRGBA:
texel.internalFormat = GL_RED;
switch (dstFormat.getType()) {
case gpu::UINT32: {
texel.internalFormat = GL_R32UI;
break;
}
case gpu::INT32: {
texel.internalFormat = GL_R32I;
break;
}
case gpu::NUINT32: {
texel.internalFormat = GL_R8;
break;
}
case gpu::NINT32: {
texel.internalFormat = GL_R8_SNORM;
break;
}
case gpu::FLOAT: {
texel.internalFormat = GL_R32F;
break;
}
case gpu::UINT16: {
texel.internalFormat = GL_R16UI;
break;
}
case gpu::INT16: {
texel.internalFormat = GL_R16I;
break;
}
case gpu::NUINT16: {
texel.internalFormat = GL_R16;
break;
}
case gpu::NINT16: {
texel.internalFormat = GL_R16_SNORM;
break;
}
case gpu::HALF: {
texel.internalFormat = GL_R16F;
break;
}
case gpu::UINT8: {
texel.internalFormat = GL_R8UI;
break;
}
case gpu::INT8: {
texel.internalFormat = GL_R8I;
break;
}
case gpu::NUINT8: {
if ((dstFormat.getSemantic() == gpu::SRGB || dstFormat.getSemantic() == gpu::SRGBA)) {
texel.internalFormat = GL_SLUMINANCE8_EXT;
} else {
texel.internalFormat = GL_R8;
}
break;
}
case gpu::NINT8: {
texel.internalFormat = GL_R8_SNORM;
break;
}
case gpu::COMPRESSED:
case gpu::NUINT2:
case gpu::NINT2_10_10_10:
case gpu::NUM_TYPES: { // quiet compiler
Q_UNREACHABLE();
}
}
break;
case gpu::R11G11B10:
texel.format = GL_RGB;
texel.type = GL_UNSIGNED_INT_10F_11F_11F_REV;
texel.internalFormat = GL_R11F_G11F_B10F;
break;
case gpu::RGB9E5:
texel.format = GL_RGB;
texel.type = GL_UNSIGNED_INT_5_9_9_9_REV;
texel.internalFormat = GL_RGB9_E5;
break;
case gpu::DEPTH:
texel.format = GL_DEPTH_COMPONENT; // It's depth component to load it
texel.internalFormat = GL_DEPTH_COMPONENT32;
switch (dstFormat.getType()) {
case gpu::UINT32:
case gpu::INT32:
case gpu::NUINT32:
case gpu::NINT32: {
texel.internalFormat = GL_DEPTH_COMPONENT32;
break;
}
case gpu::FLOAT: {
texel.internalFormat = GL_DEPTH_COMPONENT32F;
break;
}
case gpu::UINT16:
case gpu::INT16:
case gpu::NUINT16:
case gpu::NINT16:
case gpu::HALF: {
texel.internalFormat = GL_DEPTH_COMPONENT16;
break;
}
case gpu::UINT8:
case gpu::INT8:
case gpu::NUINT8:
case gpu::NINT8: {
texel.internalFormat = GL_DEPTH_COMPONENT24;
break;
}
case gpu::NINT2_10_10_10:
case gpu::COMPRESSED:
case gpu::NUINT2:
case gpu::NUM_TYPES: { // quiet compiler
Q_UNREACHABLE();
}
}
break;
case gpu::DEPTH_STENCIL:
texel.type = GL_UNSIGNED_INT_24_8;
texel.format = GL_DEPTH_STENCIL;
texel.internalFormat = GL_DEPTH24_STENCIL8;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC2: {
texel.format = GL_RG;
texel.type = ELEMENT_TYPE_TO_GL[dstFormat.getType()];
switch (dstFormat.getSemantic()) {
case gpu::RGB:
case gpu::RGBA:
case gpu::XY:
switch (dstFormat.getType()) {
case gpu::UINT32:
texel.internalFormat = GL_RG32UI;
break;
case gpu::INT32:
texel.internalFormat = GL_RG32I;
break;
case gpu::FLOAT:
texel.internalFormat = GL_RG32F;
break;
case gpu::UINT16:
texel.internalFormat = GL_RG16UI;
break;
case gpu::INT16:
texel.internalFormat = GL_RG16I;
break;
case gpu::NUINT16:
texel.internalFormat = GL_RG16;
break;
case gpu::NINT16:
texel.internalFormat = GL_RG16_SNORM;
break;
case gpu::HALF:
texel.type = GL_FLOAT;
texel.internalFormat = GL_RG16F;
break;
case gpu::UINT8:
texel.internalFormat = GL_RG8UI;
break;
case gpu::INT8:
texel.internalFormat = GL_RG8I;
break;
case gpu::NUINT8:
texel.internalFormat = GL_RG8;
break;
case gpu::NINT8:
texel.internalFormat = GL_RG8_SNORM;
break;
case gpu::NUINT32:
case gpu::NINT32:
case gpu::NUINT2:
case gpu::NINT2_10_10_10:
case gpu::COMPRESSED:
case gpu::NUM_TYPES: // quiet compiler
Q_UNREACHABLE();
}
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC3: {
texel.format = GL_RGB;
texel.type = ELEMENT_TYPE_TO_GL[dstFormat.getType()];
switch (dstFormat.getSemantic()) {
case gpu::RGB:
case gpu::RGBA:
texel.internalFormat = GL_RGB8;
break;
case gpu::SRGB:
case gpu::SRGBA:
texel.internalFormat = GL_SRGB8; // standard 2.2 gamma correction color
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::VEC4: {
texel.format = GL_RGBA;
texel.type = ELEMENT_TYPE_TO_GL[dstFormat.getType()];
switch (dstFormat.getSemantic()) {
case gpu::RGB:
texel.internalFormat = GL_RGB8;
break;
case gpu::RGBA:
texel.internalFormat = GL_RGBA8;
switch (dstFormat.getType()) {
case gpu::UINT32:
texel.format = GL_RGBA_INTEGER;
texel.internalFormat = GL_RGBA32UI;
break;
case gpu::INT32:
texel.format = GL_RGBA_INTEGER;
texel.internalFormat = GL_RGBA32I;
break;
case gpu::FLOAT:
texel.internalFormat = GL_RGBA32F;
break;
case gpu::UINT16:
texel.format = GL_RGBA_INTEGER;
texel.internalFormat = GL_RGBA16UI;
break;
case gpu::INT16:
texel.format = GL_RGBA_INTEGER;
texel.internalFormat = GL_RGBA16I;
break;
case gpu::NUINT16:
texel.format = GL_RGBA;
texel.internalFormat = GL_RGBA16;
break;
case gpu::NINT16:
texel.format = GL_RGBA;
texel.internalFormat = GL_RGBA16_SNORM;
break;
case gpu::HALF:
texel.format = GL_RGBA;
texel.internalFormat = GL_RGBA16F;
break;
case gpu::UINT8:
texel.format = GL_RGBA_INTEGER;
texel.internalFormat = GL_RGBA8UI;
break;
case gpu::INT8:
texel.format = GL_RGBA_INTEGER;
texel.internalFormat = GL_RGBA8I;
break;
case gpu::NUINT8:
texel.format = GL_RGBA;
texel.internalFormat = GL_RGBA8;
break;
case gpu::NINT8:
texel.format = GL_RGBA;
texel.internalFormat = GL_RGBA8_SNORM;
break;
case gpu::NUINT2:
texel.format = GL_RGBA;
texel.internalFormat = GL_RGBA2;
break;
case gpu::NINT2_10_10_10:
texel.format = GL_RGBA;
texel.internalFormat = GL_RGB10_A2;
break;
case gpu::NUINT32:
case gpu::NINT32:
case gpu::COMPRESSED:
case gpu::NUM_TYPES: // quiet compiler
Q_UNREACHABLE();
}
break;
case gpu::SRGB:
texel.internalFormat = GL_SRGB8;
break;
case gpu::SRGBA:
texel.internalFormat = GL_SRGB8_ALPHA8; // standard 2.2 gamma correction color
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
case gpu::TILE4x4: {
texel.format = GL_RGBA;
texel.type = ELEMENT_TYPE_TO_GL[srcFormat.getType()];
switch (srcFormat.getSemantic()) {
case gpu::BGRA:
case gpu::SBGRA:
#if !defined(USE_GLES)
texel.format = GL_BGRA;
break;
#endif
case gpu::RGB:
case gpu::RGBA:
case gpu::SRGB:
case gpu::SRGBA:
default:
break;
};
switch (dstFormat.getSemantic()) {
case gpu::COMPRESSED_BC4_RED:
texel.internalFormat = GL_COMPRESSED_RED_RGTC1;
break;
case gpu::COMPRESSED_BC1_SRGB:
texel.internalFormat = GL_COMPRESSED_SRGB_S3TC_DXT1_EXT;
break;
case gpu::COMPRESSED_BC1_SRGBA:
texel.internalFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
break;
case gpu::COMPRESSED_BC3_SRGBA:
texel.internalFormat = GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
break;
case gpu::COMPRESSED_BC5_XY:
texel.internalFormat = GL_COMPRESSED_RG_RGTC2;
break;
case gpu::COMPRESSED_BC6_RGB:
texel.internalFormat = GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT;
break;
case gpu::COMPRESSED_BC7_SRGBA:
texel.internalFormat = GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM;
break;
case gpu::COMPRESSED_ETC2_RGB:
texel.internalFormat = GL_COMPRESSED_RGB8_ETC2;
break;
case gpu::COMPRESSED_ETC2_SRGB:
texel.internalFormat = GL_COMPRESSED_SRGB8_ETC2;
break;
case gpu::COMPRESSED_ETC2_RGB_PUNCHTHROUGH_ALPHA:
texel.internalFormat = GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2;
break;
case gpu::COMPRESSED_ETC2_SRGB_PUNCHTHROUGH_ALPHA:
texel.internalFormat = GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2;
break;
case gpu::COMPRESSED_ETC2_RGBA:
texel.internalFormat = GL_COMPRESSED_RGBA8_ETC2_EAC;
break;
case gpu::COMPRESSED_ETC2_SRGBA:
texel.internalFormat = GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC;
break;
case gpu::COMPRESSED_EAC_RED:
texel.internalFormat = GL_COMPRESSED_R11_EAC;
break;
case gpu::COMPRESSED_EAC_RED_SIGNED:
texel.internalFormat = GL_COMPRESSED_SIGNED_R11_EAC;
break;
case gpu::COMPRESSED_EAC_XY:
texel.internalFormat = GL_COMPRESSED_RG11_EAC;
break;
case gpu::COMPRESSED_EAC_XY_SIGNED:
texel.internalFormat = GL_COMPRESSED_SIGNED_RG11_EAC;
break;
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
break;
}
default:
qCWarning(gpugllogging) << "Unknown combination of texel format";
}
return texel;
}
}
Reference in a new issue View git blame Copy permalink