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[Feat] (MG_Backend/DirectGLES): implement glGenerateMipmap

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This commit is contained in:
swung0x48
2025-11-17 17:36:42 +08:00
parent 0139cabfbc
commit 55db06bf5c
3 changed files with 49 additions and 13 deletions
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MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp
+43 -10
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@@ -112,6 +112,19 @@ namespace MobileGL::MG_Backend::DirectGLES {
} // namespace VertexArrayImpl
namespace TextureImpl {
SharedPtr<BackendTextureObject> SyncTextureObjectToBackend(SharedPtr<MG_State::GLState::ITextureObject>& textureObject) {
const auto& backendTextureIt = g_backendTextureObjects.find(textureObject);
SharedPtr<BackendTextureObject> backendTextureObject;
if (backendTextureIt == g_backendTextureObjects.end()) {
backendTextureObject = MakeShared<BackendTextureObject>();
g_backendTextureObjects[textureObject] = backendTextureObject;
} else {
backendTextureObject = backendTextureIt->second;
}
backendTextureObject->SyncToBackend(textureObject);
return backendTextureObject;
}
void SyncNeccessaryTextures() {
// All textures we need are:
// 1. textures bound to texture units (TODO: only sync ones that are used in current program)
@@ -144,15 +157,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
// Do real sync
for (auto& textureObject : texturesToSync) {
const auto& backendTextureIt = g_backendTextureObjects.find(textureObject);
SharedPtr<BackendTextureObject> backendTextureObject;
if (backendTextureIt == g_backendTextureObjects.end()) {
backendTextureObject = MakeShared<BackendTextureObject>();
g_backendTextureObjects[textureObject] = backendTextureObject;
} else {
backendTextureObject = backendTextureIt->second;
}
backendTextureObject->SyncToBackend(textureObject);
SyncTextureObjectToBackend(textureObject);
}
}
} // namespace TextureImpl
@@ -486,14 +491,30 @@ namespace MobileGL::MG_Backend::DirectGLES {
void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1,
GLint dstY1, GLbitfield mask, GLenum filter) {
DebugImpl::ErrorLopper errorLopper;
TextureImpl::SyncNeccessaryTextures();
errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
});
FramebufferImpl::SyncCurrentFBO();
errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
});
RenderStateImpl::SyncRenderState();
errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
});
BindCurrentFBO(FramebufferTarget::Draw);
BindCurrentFBO(FramebufferTarget::Read);
errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
});
MG_External::GLES::glBlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
errorLopper.Loop([file = __FILE__, line = __LINE__](auto err) {
MGLOG_D("ES error (%s:%d): %s", file, line, MG_Util::ConvertGLEnumToString(err).c_str());
});
}
void CopyTexImage2D(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width,
@@ -662,6 +683,18 @@ namespace MobileGL::MG_Backend::DirectGLES {
}
}
void GenerateMipmap(GLenum target) {
auto unitIndex = MG_State::pGLContext->GetActiveTextureUnit();
auto& unit = MG_State::pGLContext->GetTextureUnitObject(unitIndex);
auto& slot = unit.GetBindingSlot(MG_Util::ConvertGLEnumToTextureTarget(target));
auto texture = slot.GetBoundObject();
auto backendTexture = TextureImpl::SyncTextureObjectToBackend(texture);
TextureImpl::BackendTextureBindingProtector protector(target);
backendTexture->Bind(target);
MG_External::GLES::glGenerateMipmap(target);
}
const GLubyte* GetString(GLenum name) {
return MG_External::GLES::glGetString(name);
}
MobileGL/MG_Backend/DirectGLES/DirectGLES.h
+1
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@@ -20,5 +20,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
GLsizei height, GLint border);
void CopyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y,
GLsizei width, GLsizei height);
void GenerateMipmap(GLenum target);
const GLubyte* GetString(GLenum name);
} // namespace MobileGL::MG_Backend::DirectGLES
MobileGL/MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.cpp
+5 -3
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@@ -46,8 +46,10 @@ namespace MobileGL {
// TODO: implement
}
void GenerateMipmap_State(GLenum target) {
// TODO: implement
void GenerateMipmap_Backend(GLenum target) {
#if MOBILEGL_BACKEND == MOBILEGL_BACKEND_TYPE_DIRECT_GLES
MG_Backend::DirectGLES::GenerateMipmap(target);
#endif
}
void GenRenderbuffers_State(GLsizei n, GLuint* renderbuffers) {
@@ -325,7 +327,7 @@ namespace MobileGL {
}
void GenerateMipmap(GLenum target) {
GenerateMipmap_State(target);
GenerateMipmap_Backend(target);
}
void GenRenderbuffers(GLsizei n, GLuint* renderbuffers) {