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[Feat] (MG_State/Texture, MG_Impl/Texture): glTexBuffer (and implement TextureObjectBuffer accordingly)

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swung0x48
2025-12-09 21:20:39 +08:00
parent 3f36248638
commit cb4e6b5f19
13 changed files with 118 additions and 31 deletions
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MobileGL/MG_Impl/GLImpl/Texture/GL_Texture.cpp
+56 -15
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@@ -7,6 +7,8 @@
#include "MG_Util/Types.h"
#include "Validators.h"
#include "ProxyTexture.h"
#include "MG_State/GLState/TextureState/TextureObjectBuffer.h"
#include <MG_State/GLState/Core.h>
#include <MG_Util/Metrics/TextureMetrics.h>
#include <MG_State/GLState/ErrorState/Error.h>
@@ -68,9 +70,9 @@ namespace MobileGL {
// Assert this for extra safety.
// This should automatically compiled out in release,
// so that we don't take the perf hit of dyn-cast.
MOBILEGL_ASSERT(nullptr != dynamic_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get()),
MOBILEGL_ASSERT(nullptr != dynamic_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get()),
"Texture object here should always be an object with mipmap");
auto textureMipmapObject = static_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get());
auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
auto texelSize = textureMipmapObject->GetMipmapTexelSize(textureUploadingTarget, level);
SizeT imageSize = 0;
@@ -403,9 +405,9 @@ namespace MobileGL {
reinterpret_cast<SizeT>(pixels);
}
MOBILEGL_ASSERT(nullptr != dynamic_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get()),
MOBILEGL_ASSERT(nullptr != dynamic_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get()),
"Texture object here should always be an object with mipmap");
auto textureMipmapObject = static_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get());
auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
// Allocate in TextureObject
@@ -442,9 +444,48 @@ namespace MobileGL {
THROW_UNIMPL_EXCEPTION;
}
void TexBuffer_State(GLenum target, GLenum internalformat, GLuint texture) {
// TODO: implement
THROW_UNIMPL_EXCEPTION;
void TexBuffer_State(GLenum target, GLenum internalformat, GLuint buffer) {
// ======================= Converting ================================
TextureTarget textureTarget = MG_Util::ConvertGLEnumToTextureTarget(target);
TextureUploadTarget textureUploadingTarget = MG_Util::ConvertGLEnumToTextureUploadTarget(target);
TextureInternalFormat textureInternalFormat = MG_Util::ConvertGLEnumToTextureInternalFormat(internalformat);
// ===================== Error Checking ==============================
if (!TextureImpl::ValidateTextureUploadTarget(textureUploadingTarget)) return;
if (!TextureImpl::ValidateTextureInternalFormat(textureInternalFormat)) return;
// TODO: make sure `internalformat` is in one of supported format for TexBuffer
auto bufferObject = MG_State::pGLContext->GetBufferObject(buffer);
if (!bufferObject) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
"`buffer` is not zero and is not the name of an existing buffer object."));
return;
}
// ======================= Processing ================================
auto activeUnit =
MG_State::pGLContext->GetTextureUnitObject(MG_State::pGLContext->GetActiveTextureUnit());
auto& bindingSlot = activeUnit.GetBindingSlot(textureTarget);
auto textureObject = bindingSlot.GetBoundObject();
// ===================== Error Checking ==============================
if (!TextureImpl::ValidateTextureObject(textureObject)) return;
if (textureObject->GetStorageType() != TextureStorageType::Buffer) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidEnum,
MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
"The effective target of `texture` is not `GL_TEXTURE_BUFFER`."));
return;
}
// ======================= Processing ================================
// Now we can rest assured, and down-cast texture object to texture buffer
auto* texBufferObject = static_cast<MG_State::GLState::TextureObjectBuffer*>(textureObject.get());
auto& bufferSlot = texBufferObject->GetBufferBindingSlot();
bufferSlot.Bind(bufferObject);
texBufferObject->SetInternalFormat(textureInternalFormat);
}
GLboolean IsTexture_State(GLuint texture) {
@@ -660,7 +701,7 @@ namespace MobileGL {
if (params) {
switch (textureObject->GetStorageType()) {
case TextureStorageType::Mipmap: {
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get());
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
*params = textureMipmapObject->GetMipmapTexelSize(textureUploadingTarget, level).x();
break;
}
@@ -673,7 +714,7 @@ namespace MobileGL {
if (params) {
switch (textureObject->GetStorageType()) {
case TextureStorageType::Mipmap: {
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get());
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
*params = textureMipmapObject->GetMipmapTexelSize(textureUploadingTarget, level).y();
break;
}
@@ -686,7 +727,7 @@ namespace MobileGL {
if (params) {
switch (textureObject->GetStorageType()) {
case TextureStorageType::Mipmap: {
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get());
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
*params = textureMipmapObject->GetMipmapTexelSize(textureUploadingTarget, level).z();
break;
}
@@ -750,7 +791,7 @@ namespace MobileGL {
if (params) {
switch (textureObject->GetStorageType()) {
case TextureStorageType::Mipmap: {
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get());
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
*params = textureMipmapObject->GetMipmapTexelSize(textureUploadingTarget, level).x();
break;
}
@@ -763,7 +804,7 @@ namespace MobileGL {
if (params) {
switch (textureObject->GetStorageType()) {
case TextureStorageType::Mipmap: {
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get());
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
*params = textureMipmapObject->GetMipmapTexelSize(textureUploadingTarget, level).y();
break;
}
@@ -776,7 +817,7 @@ namespace MobileGL {
if (params) {
switch (textureObject->GetStorageType()) {
case TextureStorageType::Mipmap: {
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureMipmapObject*>(textureObject.get());
const auto textureMipmapObject = static_cast<MG_State::GLState::TextureObjectMipmap*>(textureObject.get());
*params = textureMipmapObject->GetMipmapTexelSize(textureUploadingTarget, level).z();
break;
}
@@ -1017,8 +1058,8 @@ namespace MobileGL {
TexImage1D_State(target, level, internalFormat, width, border, format, type, pixels);
}
void TexBuffer(GLenum target, GLenum internalformat, GLuint texture) {
TexBuffer_State(target, internalformat, texture);
void TexBuffer(GLenum target, GLenum internalformat, GLuint buffer) {
TexBuffer_State(target, internalformat, buffer);
}
GLboolean IsTexture(GLuint texture) {