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[Fix]: fix Complementary

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- add a DirectGLES ANGLE fallback control for 8-bit SNORM texture formats

- normalize SNORM8 textures to float storage so ANGLE can render Complementary intermediate framebuffers

- reuse the normalized upload conversion path for SNORM8 and existing norm16 float fallbacks
This commit is contained in:
swung0x48
2026-06-23 07:37:25 +08:00
parent 3f53041ed2
commit 18d19a9a8b
4 changed files with 75 additions and 14 deletions
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MobileGL/MG_Backend/DirectGLES/Managers.cpp
+41 -14
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@@ -533,17 +533,21 @@ namespace MobileGL::MG_Backend::DirectGLES {
GLint m_prevSkipImages = 0;
};
static Uint GetNorm16ComponentCount(TextureInternalFormat format) {
static Uint GetNormFallbackComponentCount(TextureInternalFormat format) {
switch (format) {
case TextureInternalFormat::R8Snorm:
case TextureInternalFormat::R16:
case TextureInternalFormat::R16Snorm:
return 1;
case TextureInternalFormat::RG8Snorm:
case TextureInternalFormat::RG16:
case TextureInternalFormat::RG16Snorm:
return 2;
case TextureInternalFormat::RGB8Snorm:
case TextureInternalFormat::RGB16:
case TextureInternalFormat::RGB16Snorm:
return 3;
case TextureInternalFormat::RGBA8Snorm:
case TextureInternalFormat::RGBA16:
case TextureInternalFormat::RGBA16Snorm:
return 4;
@@ -552,8 +556,12 @@ namespace MobileGL::MG_Backend::DirectGLES {
}
}
static Bool IsSnorm16Format(TextureInternalFormat format) {
static Bool IsSnormFallbackFormat(TextureInternalFormat format) {
switch (format) {
case TextureInternalFormat::R8Snorm:
case TextureInternalFormat::RG8Snorm:
case TextureInternalFormat::RGB8Snorm:
case TextureInternalFormat::RGBA8Snorm:
case TextureInternalFormat::R16Snorm:
case TextureInternalFormat::RG16Snorm:
case TextureInternalFormat::RGB16Snorm:
@@ -564,13 +572,25 @@ namespace MobileGL::MG_Backend::DirectGLES {
}
}
static const void* PrepareNorm16FloatFallbackUpload(TextureInternalFormat format,
const IntVec3& texelSize,
const void* data,
SizeT byteSize,
GLenum uploadType,
Vector<Float>& convertedData) {
const Uint componentCount = GetNorm16ComponentCount(format);
static Bool IsNorm8FallbackFormat(TextureInternalFormat format) {
switch (format) {
case TextureInternalFormat::R8Snorm:
case TextureInternalFormat::RG8Snorm:
case TextureInternalFormat::RGB8Snorm:
case TextureInternalFormat::RGBA8Snorm:
return true;
default:
return false;
}
}
static const void* PrepareNormFloatFallbackUpload(TextureInternalFormat format,
const IntVec3& texelSize,
const void* data,
SizeT byteSize,
GLenum uploadType,
Vector<Float>& convertedData) {
const Uint componentCount = GetNormFallbackComponentCount(format);
if (componentCount == 0 || uploadType != GL_FLOAT || data == nullptr || byteSize == 0) {
return data;
}
@@ -579,14 +599,21 @@ namespace MobileGL::MG_Backend::DirectGLES {
static_cast<SizeT>(std::max(texelSize.y(), 0)) *
static_cast<SizeT>(std::max(texelSize.z(), 0));
const SizeT componentTotal = texelCount * static_cast<SizeT>(componentCount);
const SizeT sourceComponentTotal = byteSize / sizeof(Uint16);
const SizeT sourceComponentSize = IsNorm8FallbackFormat(format) ? sizeof(Int8) : sizeof(Uint16);
const SizeT sourceComponentTotal = byteSize / sourceComponentSize;
if (componentTotal == 0 || sourceComponentTotal == 0) {
return nullptr;
}
convertedData.assign(componentTotal, 0.0f);
const SizeT copyComponentTotal = std::min(componentTotal, sourceComponentTotal);
if (IsSnorm16Format(format)) {
if (IsNorm8FallbackFormat(format)) {
const Int8* src = static_cast<const Int8*>(data);
constexpr Float invMaxSnorm8 = 1.0f / 127.0f;
for (SizeT i = 0; i < copyComponentTotal; ++i) {
convertedData[i] = std::max(static_cast<Float>(src[i]) * invMaxSnorm8, -1.0f);
}
} else if (IsSnormFallbackFormat(format)) {
const Int16* src = static_cast<const Int16*>(data);
constexpr Float invMaxSnorm16 = 1.0f / 32767.0f;
for (SizeT i = 0; i < copyComponentTotal; ++i) {
@@ -695,7 +722,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
? textureMipmapObject->MapMipmapData(uploadTarget, level)
: nullptr;
Vector<Float> convertedUploadData;
const void* uploadData = PrepareNorm16FloatFallbackUpload(
const void* uploadData = PrepareNormFloatFallbackUpload(
textureMipmapObject->GetFormat(), levelTexelSize, pData, levelByteSize, glType,
convertedUploadData);
@@ -785,7 +812,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
? textureMipmapObject->MapMipmapData(uploadTarget, level)
: nullptr;
Vector<Float> convertedUploadData;
const void* uploadData = PrepareNorm16FloatFallbackUpload(
const void* uploadData = PrepareNormFloatFallbackUpload(
textureMipmapObject->GetFormat(), levelTexelSize, pData, levelByteSize, glType,
convertedUploadData);
MGLOG_D("%s: target: %s: syncing mip %d: %dx%dx%d, byteSize = %d, pData = %p, "
@@ -889,7 +916,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
auto texelSize = textureMipmapObject->GetMipmapTexelSize(uploadTarget, level);
const void* mipData = textureMipmapObject->MapMipmapData(uploadTarget, level);
Vector<Float> convertedUploadData;
const void* uploadData = PrepareNorm16FloatFallbackUpload(
const void* uploadData = PrepareNormFloatFallbackUpload(
textureMipmapObject->GetFormat(), texelSize, mipData, byteSize, glType,
convertedUploadData);
switch (stateTextureObject->GetTarget()) {