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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "MatrixState.hpp"
#include "Rendering/GL/myGL.h"
#include "System/MainDefines.h"
#include "System/MathConstants.h"
#include "System/SpringMath.h"
static GL::MatrixState glMatrixStates[2];
static _threadlocal GL::MatrixState* glMatrixState = nullptr;
GL::MatrixState* GL::SetMatrixStatePointer(bool mainThread) { return (glMatrixState = &glMatrixStates[mainThread]); }
GL::MatrixState* GL::GetMatrixStatePointer( ) { return (glMatrixState ); }
const CMatrix44f& GL::MatrixState::Top(unsigned int mode) const {
#ifdef CHECK_MATRIX_STACK_UNDERFLOW
if (stacks[mode].empty()) {
assert(false);
return dummy;
}
#endif
return (stacks[mode].back());
}
CMatrix44f& GL::MatrixState::Top(unsigned int mode) {
#ifdef CHECK_MATRIX_STACK_UNDERFLOW
if (stacks[mode].empty()) {
assert(false);
return dummy;
}
#endif
return (stacks[mode].back());
}
void GL::MatrixState::Push(const CMatrix44f& m) { stack->push_back(m); }
void GL::MatrixState::Push() { Push(Top()); }
void GL::MatrixState::Pop() {
#ifdef CHECK_MATRIX_STACK_UNDERFLOW
if (stack->empty()) {
assert(false);
return;
}
#endif
stack->pop_back();
}
void GL::MatrixState::Mult(const CMatrix44f& m) { Top() = Top() * m; }
void GL::MatrixState::Load(const CMatrix44f& m) { Top() = m; }
void GL::MatrixState::Translate(const float3& v) { Load((Top()).Translate(v)); }
void GL::MatrixState::Translate(float x, float y, float z) { Translate({x, y, z}); }
void GL::MatrixState::Scale(const float3& s) { Load((Top()).Scale(s)); }
void GL::MatrixState::Scale(float x, float y, float z) { Scale({x, y, z}); }
// FIXME: broken
void GL::MatrixState::Rotate(float a, float x, float y, float z) { Load((Top()).Rotate(-a * math::DEG_TO_RAD, {x, y, z})); }
void GL::MatrixState::RotateX(float a) { Load((Top()).RotateX(-a * math::DEG_TO_RAD)); }
void GL::MatrixState::RotateY(float a) { Load((Top()).RotateY(-a * math::DEG_TO_RAD)); }
void GL::MatrixState::RotateZ(float a) { Load((Top()).RotateZ(-a * math::DEG_TO_RAD)); }
void GL::MatrixMode(unsigned int glMode) {
switch (glMode) {
case GL_MODELVIEW : { glMatrixState->SetMode(0); } break;
case GL_PROJECTION: { glMatrixState->SetMode(1); } break;
case GL_TEXTURE : { glMatrixState->SetMode(2); } break;
default : { assert(false); } break;
}
}
int GL::GetMatrixMode() {
switch (glMatrixState->GetMode()) {
case 0: { return GL_MODELVIEW ; } break;
case 1: { return GL_PROJECTION; } break;
case 2: { return GL_TEXTURE ; } break;
default: { assert(false); } break;
}
return 0;
}
const CMatrix44f& GL::GetMatrix() { return (glMatrixState->Top()); }
const CMatrix44f& GL::GetMatrix(unsigned int glMode) {
switch (glMode) {
case GL_MODELVIEW : { return (glMatrixState->Top(0)); } break;
case GL_PROJECTION: { return (glMatrixState->Top(1)); } break;
case GL_TEXTURE : { return (glMatrixState->Top(2)); } break;
default : { assert(false); } break;
}
// fallback
return (glMatrixState->Top());
}
void GL::PushMatrix(const CMatrix44f& m) { glMatrixState->Push(m); }
void GL::PushMatrix() { glMatrixState->Push(glMatrixState->Top()); }
void GL::PopMatrix() { glMatrixState->Pop(); }
void GL::MultMatrix(const CMatrix44f& m) { glMatrixState->Mult(m); }
void GL::LoadMatrix(const CMatrix44f& m) { glMatrixState->Load(m); }
void GL::LoadIdentity() { LoadMatrix(CMatrix44f::Identity()); }
void GL::Translate(const float3& v) { glMatrixState->Translate(v); }
void GL::Translate(float x, float y, float z) { glMatrixState->Translate({x, y, z}); }
void GL::Scale(const float3& s) { glMatrixState->Scale(s); }
void GL::Scale(float x, float y, float z) { glMatrixState->Scale({x, y, z}); }
void GL::Rotate(float a, float x, float y, float z) { glMatrixState->Rotate(a, x, y, z); }
void GL::RotateX(float a) { glMatrixState->RotateX(a); }
void GL::RotateY(float a) { glMatrixState->RotateY(a); }
void GL::RotateZ(float a) { glMatrixState->RotateZ(a); }
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