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[Feat] (...): Implement scissor box in frontend and backend.

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This commit is contained in:
BZLZHH
2025-11-01 16:40:38 +08:00
parent 708db4b5eb
commit bcb947235d
7 changed files with 64 additions and 30 deletions
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MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp
+23 -28
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@@ -1,5 +1,4 @@
#include "DirectGLES.h"
#include "MG_Util/ShaderTranspiler/Types.h"
#include "Utils.h"
#include "Managers.h"
#include <MG_State/GLState/Core.h>
@@ -150,25 +149,22 @@ namespace MobileGL::MG_Backend::DirectGLES {
MG_External::GLES::glViewport(
MG_State::pGLContext->GetViewport().x(), MG_State::pGLContext->GetViewport().y(),
MG_State::pGLContext->GetViewport().z(), MG_State::pGLContext->GetViewport().w());
if (MG_State::pGLContext->IsCapabilityEnabled(CapabilityInput::DepthTest)) {
MG_External::GLES::glEnable(GL_DEPTH_TEST);
} else {
MG_External::GLES::glDisable(GL_DEPTH_TEST);
}
if (MG_State::pGLContext->IsCapabilityEnabled(CapabilityInput::Blend)) {
MG_External::GLES::glEnable(GL_BLEND);
} else {
MG_External::GLES::glDisable(GL_BLEND);
}
if (MG_State::pGLContext->IsCapabilityEnabled(CapabilityInput::CullFace)) {
MG_External::GLES::glEnable(GL_CULL_FACE);
} else {
MG_External::GLES::glDisable(GL_CULL_FACE);
}
#define SYNC_CAPABILITY(cap_mg, cap_gl) \
if (MG_State::pGLContext->IsCapabilityEnabled(cap_mg)) { \
MG_External::GLES::glEnable(cap_gl); \
} else { \
MG_External::GLES::glDisable(cap_gl); \
}
SYNC_CAPABILITY(CapabilityInput::Blend, GL_BLEND);
SYNC_CAPABILITY(CapabilityInput::DepthTest, GL_DEPTH_TEST);
SYNC_CAPABILITY(CapabilityInput::ScissorTest, GL_SCISSOR_TEST);
SYNC_CAPABILITY(CapabilityInput::CullFace, GL_CULL_FACE);
#undef SYNC_CAPABILITY
const auto& ToGLBoolean = [](Bool b) -> GLboolean { return b ? GL_TRUE : GL_FALSE; };
{
{ // Blend func
BlendFactor srcRGB, dstRGB, srcAlpha, dstAlpha;
MG_State::pGLContext->GetBlendFunc(srcRGB, dstRGB, srcAlpha, dstAlpha);
@@ -177,26 +173,26 @@ namespace MobileGL::MG_Backend::DirectGLES {
MG_Util::ConvertBlendFactorToGLEnum(srcAlpha), MG_Util::ConvertBlendFactorToGLEnum(dstAlpha));
}
{
{ // Blend equation
DepthTestFunc df = MG_State::pGLContext->GetDepthFunc();
MG_External::GLES::glDepthFunc(MG_Util::ConvertDepthTestFuncToGLEnum(df));
MG_External::GLES::glDepthMask(MG_State::pGLContext->GetDepthMask() ? GL_TRUE : GL_FALSE);
}
{
{ // Color mask
BoolVec4 colorMask = MG_State::pGLContext->GetColorMask();
MG_External::GLES::glColorMask(ToGLBoolean(colorMask.x()), ToGLBoolean(colorMask.y()),
ToGLBoolean(colorMask.z()), ToGLBoolean(colorMask.w()));
}
{
{ // Clear values
const FloatVec4& clearCol = MG_State::pGLContext->GetClearColor();
MG_External::GLES::glClearColor(clearCol.x(), clearCol.y(), clearCol.z(), clearCol.w());
MG_External::GLES::glClearDepthf(MG_State::pGLContext->GetClearDepth());
}
{
{ // Pixel store params
{
PixelStoreParam p = PixelStoreParam::UnpackAlignment;
GLint v = MG_State::pGLContext->GetPixelStoreParam(p);
@@ -209,16 +205,15 @@ namespace MobileGL::MG_Backend::DirectGLES {
}
}
if (MG_State::pGLContext->IsCapabilityEnabled(CapabilityInput::CullFace)) {
MG_External::GLES::glEnable(GL_CULL_FACE);
} else {
MG_External::GLES::glDisable(GL_CULL_FACE);
}
{
{ // Cull face mode
CullFaceMode cfm = MG_State::pGLContext->GetCullFaceMode();
MG_External::GLES::glCullFace(MG_Util::ConvertCullFaceModeToGLEnum(cfm));
}
{ // Scissor box
const IntVec4& scissorBox = MG_State::pGLContext->GetScissorBox();
MG_External::GLES::glScissor(scissorBox.x(), scissorBox.y(), scissorBox.z(), scissorBox.w());
}
}
} // namespace RenderStateImpl
MobileGL/MG_Backend/DirectGLES/Managers.cpp
-1
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@@ -285,7 +285,6 @@ namespace MobileGL::MG_Backend::DirectGLES {
}
{ // Update sampler parameters; TODO: always use sampler objects in backend
const auto& samplerObject = stateTextureObject->GetSamplerObject();
if (samplerObject) {
MG_External::GLES::glTexParameteri(
MobileGL/MG_Impl/GLImpl/RenderState/GL_RenderState.cpp
+8 -1
View File
@@ -44,7 +44,14 @@ namespace MobileGL {
}
void Scissor_State(GLint x, GLint y, GLsizei width, GLsizei height) {
// TODO: implement
if (width < 0 || height < 0) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidValue, MakeShared<GenericErrorInfo>("MG_Impl/GLImpl", "Scissor_State",
"Width abd height must be non-negative."));
return;
}
MG_State::pGLContext->SetScissorBox(IntVec4(x, y, width, height));
}
void SampleCoverage_State(GLfloat value, GLboolean invert) {
MobileGL/MG_State/GLState/Core.cpp
+8
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@@ -293,6 +293,14 @@ namespace MobileGL {
return m_renderState.GetCullFaceMode();
}
void GLContext::SetScissorBox(IntVec4 box) {
m_renderState.SetScissorBox(box);
}
const IntVec4& GLContext::GetScissorBox() const {
return m_renderState.GetScissorBox();
}
// Framebuffer
Vector<Uint> GLContext::GenFramebufferNames(Uint number) {
return m_framebufferState.GenerateNames(number);
MobileGL/MG_State/GLState/Core.h
+2
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@@ -92,6 +92,8 @@ namespace MobileGL {
Int GetPixelStoreParam(PixelStoreParam param) const;
void SetCullFaceMode(CullFaceMode mode);
CullFaceMode GetCullFaceMode() const;
void SetScissorBox(IntVec4 box); // x, y, width, height
const IntVec4& GetScissorBox() const; // x, y, width, height
// Framebuffer
Vector<Uint> GenFramebufferNames(Uint number);
MobileGL/MG_State/GLState/RenderState/RenderState.cpp
+14
View File
@@ -39,6 +39,9 @@ namespace MobileGL {
case CapabilityInput::CullFace:
m_cullFaceEnabled = enabled;
break;
case CapabilityInput::ScissorTest:
m_scissorTestEnabled = enabled;
break;
default: // not supported currently
break;
}
@@ -52,6 +55,8 @@ namespace MobileGL {
return m_depthTestEnabled;
case CapabilityInput::CullFace:
return m_cullFaceEnabled;
case CapabilityInput::ScissorTest:
return m_scissorTestEnabled;
default:
return false;
}
@@ -134,6 +139,15 @@ namespace MobileGL {
CullFaceMode RenderState::GetCullFaceMode() const {
return m_cullFaceMode;
}
// --------------------- Scissor ---------------------
void RenderState::SetScissorBox(IntVec4 box) {
m_scissorBox = box;
}
const IntVec4& RenderState::GetScissorBox() const {
return m_scissorBox;
}
} // namespace GLState
} // namespace MG_State
} // namespace MobileGL
MobileGL/MG_State/GLState/RenderState/RenderState.h
+9
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@@ -1,5 +1,6 @@
#pragma once
#include "MG_Util/Math/VectorTypes.h"
#include "MG_Util/Types.h"
#include <Includes.h>
namespace MobileGL {
@@ -151,6 +152,10 @@ namespace MobileGL {
void SetCullFaceMode(CullFaceMode mode);
CullFaceMode GetCullFaceMode() const;
// Scissor
void SetScissorBox(IntVec4 box); // x, y, width, height
const IntVec4& GetScissorBox() const; // x, y, width, height
private:
// Rasterization
IntVec4 m_viewport = IntVec4(0, 0, 0, 0); // x, y, width, height
@@ -180,6 +185,10 @@ namespace MobileGL {
// Cull Face
Bool m_cullFaceEnabled = false;
CullFaceMode m_cullFaceMode = CullFaceMode::Back;
// Scissor
Bool m_scissorTestEnabled = false;
IntVec4 m_scissorBox = IntVec4(0, 0, 0, 0); // x, y, width, height
};
} // namespace GLState
} // namespace MG_State