// glLoadIdentity implementation
void
VSML::loadIdentity(MatrixTypes aType)
{
setIdentityMatrix(mMatrix[aType]);
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(aType);
#endif
}
// glLoadMatrix implementation
void
VSML::loadMatrix(MatrixTypes aType, float *aMatrix)
{
memcpy(mMatrix[aType], aMatrix, 16 * sizeof(float));
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(aType);
#endif
}
// gluLookAt implementation
void
VSML::lookAt(float xPos, float yPos, float zPos,
float xLook, float yLook, float zLook,
float xUp, float yUp, float zUp)
{
float dir[3], right[3], up[3];
up[0] = xUp; up[1] = yUp; up[2] = zUp;
dir[0] = (xLook - xPos);
dir[1] = (yLook - yPos);
dir[2] = (zLook - zPos);
normalize(dir);
crossProduct(dir,up,right);
normalize(right);
crossProduct(right,dir,up);
normalize(up);
float m1[16],m2[16];
m1[0] = right[0];
m1[4] = right[1];
m1[8] = right[2];
m1[12] = 0.0f;
m1[1] = up[0];
m1[5] = up[1];
m1[9] = up[2];
m1[13] = 0.0f;
m1[2] = -dir[0];
m1[6] = -dir[1];
m1[10] = -dir[2];
m1[14] = 0.0f;
m1[3] = 0.0f;
m1[7] = 0.0f;
m1[11] = 0.0f;
m1[15] = 1.0f;
setIdentityMatrix(m2,4);
m2[12] = -xPos;
m2[13] = -yPos;
m2[14] = -zPos;
multMatrix(MODELVIEW, m1);
multMatrix(MODELVIEW, m2);
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(MODELVIEW);
#endif
}
// glPopMatrix implementation
void
VSML::popMatrix(MatrixTypes aType) {
float *m = mMatrixStack[aType][mMatrixStack[aType].size()-1];
memcpy(mMatrix[aType], m, sizeof(float) * 16);
mMatrixStack[aType].pop_back();
free(m);
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(aType);
#endif
}
// glScale implementation with matrix selection
void
VSML::scale(MatrixTypes aType, float x, float y, float z)
{
float mat[16];
setIdentityMatrix(mat,4);
mat[0] = x;
mat[5] = y;
mat[10] = z;
multMatrix(aType,mat);
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(aType);
#endif
}
// glTranslate implementation with matrix selection
void
VSML::translate(MatrixTypes aType, float x, float y, float z)
{
float mat[16];
setIdentityMatrix(mat);
mat[12] = x;
mat[13] = y;
mat[14] = z;
multMatrix(aType,mat);
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(aType);
#endif
}
// glOrtho implementation
void
VSML::ortho(float left, float right, float bottom, float top, float nearp, float farp)
{
float m[16];
setIdentityMatrix(m,4);
m[0 * 4 + 0] = 2 / (right - left);
m[1 * 4 + 1] = 2 / (top - bottom);
m[2 * 4 + 2] = -2 / (farp - nearp);
m[3 * 4 + 0] = -(right + left) / (right - left);
m[3 * 4 + 1] = -(top + bottom) / (top - bottom);
m[3 * 4 + 2] = -(farp + nearp) / (farp - nearp);
multMatrix(PROJECTION, m);
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(PROJECTION);
#endif
}
// gluPerspective implementation
void
VSML::perspective(float fov, float ratio, float nearp, float farp)
{
float projMatrix[16];
float f = 1.0f / tan (fov * (M_PI / 360.0f));
setIdentityMatrix(projMatrix,4);
projMatrix[0] = f / ratio;
projMatrix[1 * 4 + 1] = f;
projMatrix[2 * 4 + 2] = (farp + nearp) / (nearp - farp);
projMatrix[3 * 4 + 2] = (2.0f * farp * nearp) / (nearp - farp);
projMatrix[2 * 4 + 3] = -1.0f;
projMatrix[3 * 4 + 3] = 0.0f;
multMatrix(PROJECTION, projMatrix);
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(PROJECTION);
#endif
}
// glMultMatrix implementation
void
VSML::multMatrix(MatrixTypes aType, float *aMatrix)
{
float *a, *b, res[16];
a = mMatrix[aType];
b = aMatrix;
for (int i = 0; i < 4; ++i) {
for (int j = 0; j < 4; ++j) {
res[j*4 + i] = 0.0f;
for (int k = 0; k < 4; ++k) {
res[j*4 + i] += a[k*4 + i] * b[j*4 + k];
}
}
}
memcpy(mMatrix[aType], res, 16 * sizeof(float));
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(aType);
#endif
}
// glRotate implementation with matrix selection
void
VSML::rotate(MatrixTypes aType, float angle, float x, float y, float z)
{
float mat[16];
float radAngle = DegToRad(angle);
float co = cos(radAngle);
float si = sin(radAngle);
float x2 = x*x;
float y2 = y*y;
float z2 = z*z;
mat[0] = x2 + (y2 + z2) * co;
mat[4] = x * y * (1 - co) - z * si;
mat[8] = x * z * (1 - co) + y * si;
mat[12]= 0.0f;
mat[1] = x * y * (1 - co) + z * si;
mat[5] = y2 + (x2 + z2) * co;
mat[9] = y * z * (1 - co) - x * si;
mat[13]= 0.0f;
mat[2] = x * z * (1 - co) - y * si;
mat[6] = y * z * (1 - co) + x * si;
mat[10]= z2 + (x2 + y2) * co;
mat[14]= 0.0f;
mat[3] = 0.0f;
mat[7] = 0.0f;
mat[11]= 0.0f;
mat[15]= 1.0f;
multMatrix(aType,mat);
#ifdef VSML_ALWAYS_SEND_TO_OPENGL
matrixToGL(aType);
#endif
}
bool FRenderState::ApplyShader()
{
static uint64_t firstFrame = 0;
// if firstFrame is not yet initialized, initialize it to current time
// if we're going to overflow a float (after ~4.6 hours, or 24 bits), re-init to regain precision
if ((firstFrame == 0) || (screen->FrameTime - firstFrame >= 1<<24) || level.ShaderStartTime >= firstFrame)
firstFrame = screen->FrameTime;
static const float nulvec[] = { 0.f, 0.f, 0.f, 0.f };
if (mSpecialEffect > EFF_NONE)
{
activeShader = GLRenderer->mShaderManager->BindEffect(mSpecialEffect, mPassType);
}
else
{
activeShader = GLRenderer->mShaderManager->Get(mTextureEnabled ? mEffectState : 4, mAlphaThreshold >= 0.f, mPassType);
activeShader->Bind();
}
int fogset = 0;
if (mFogEnabled)
{
if ((mFogColor & 0xffffff) == 0)
{
fogset = gl_fogmode;
}
else
{
fogset = -gl_fogmode;
}
}
glVertexAttrib4fv(VATTR_COLOR, mColor.vec);
glVertexAttrib4fv(VATTR_NORMAL, mNormal.vec);
//activeShader->muObjectColor2.Set(mObjectColor2);
activeShader->muObjectColor2.Set(mObjectColor2);
activeShader->muDesaturation.Set(mDesaturation / 255.f);
activeShader->muFogEnabled.Set(fogset);
activeShader->muPalLightLevels.Set(static_cast<int>(gl_bandedswlight) | (static_cast<int>(gl_fogmode) << 8));
activeShader->muGlobVis.Set(GLRenderer->mGlobVis / 32.0f);
activeShader->muTextureMode.Set(mTextureMode);
activeShader->muCameraPos.Set(mCameraPos.vec);
activeShader->muLightParms.Set(mLightParms);
activeShader->muFogColor.Set(mFogColor);
activeShader->muObjectColor.Set(mObjectColor);
activeShader->muDynLightColor.Set(mDynColor.vec);
activeShader->muInterpolationFactor.Set(mInterpolationFactor);
activeShader->muClipHeight.Set(mClipHeight);
activeShader->muClipHeightDirection.Set(mClipHeightDirection);
activeShader->muTimer.Set((double)(screen->FrameTime - firstFrame) * (double)mShaderTimer / 1000.);
activeShader->muAlphaThreshold.Set(mAlphaThreshold);
activeShader->muLightIndex.Set(mLightIndex); // will always be -1 for now
activeShader->muClipSplit.Set(mClipSplit);
if (mGlowEnabled)
{
activeShader->muGlowTopColor.Set(mGlowTop.vec);
activeShader->muGlowBottomColor.Set(mGlowBottom.vec);
activeShader->currentglowstate = 1;
}
else if (activeShader->currentglowstate)
{
// if glowing is on, disable it.
activeShader->muGlowTopColor.Set(nulvec);
activeShader->muGlowBottomColor.Set(nulvec);
activeShader->currentglowstate = 0;
}
if (mGlowEnabled || mObjectColor2.a != 0)
{
activeShader->muGlowTopPlane.Set(mGlowTopPlane.vec);
activeShader->muGlowBottomPlane.Set(mGlowBottomPlane.vec);
}
if (mSplitEnabled)
{
activeShader->muSplitTopPlane.Set(mSplitTopPlane.vec);
activeShader->muSplitBottomPlane.Set(mSplitBottomPlane.vec);
activeShader->currentsplitstate = 1;
}
else if (activeShader->currentsplitstate)
{
activeShader->muSplitTopPlane.Set(nulvec);
activeShader->muSplitBottomPlane.Set(nulvec);
activeShader->currentsplitstate = 0;
}
if (mClipLineEnabled)
{
activeShader->muClipLine.Set(mClipLine.vec);
activeShader->currentcliplinestate = 1;
}
else if (activeShader->currentcliplinestate)
{
activeShader->muClipLine.Set(-10000000.0, 0, 0, 0);
activeShader->currentcliplinestate = 0;
}
if (mColormapState != activeShader->currentfixedcolormap)
{
float r, g, b;
activeShader->currentfixedcolormap = mColormapState;
if (mColormapState == CM_DEFAULT)
{
activeShader->muFixedColormap.Set(0);
}
else if (mColormapState > CM_DEFAULT && mColormapState < CM_MAXCOLORMAP)
{
if (FGLRenderBuffers::IsEnabled())
{
// When using postprocessing to apply the colormap, we must render the image fullbright here.
activeShader->muFixedColormap.Set(2);
activeShader->muColormapStart.Set(1, 1, 1, 1.f);
}
else
{
FSpecialColormap *scm = &SpecialColormaps[mColormapState - CM_FIRSTSPECIALCOLORMAP];
float m[] = { scm->ColorizeEnd[0] - scm->ColorizeStart[0],
scm->ColorizeEnd[1] - scm->ColorizeStart[1], scm->ColorizeEnd[2] - scm->ColorizeStart[2], 0.f };
activeShader->muFixedColormap.Set(1);
activeShader->muColormapStart.Set(scm->ColorizeStart[0], scm->ColorizeStart[1], scm->ColorizeStart[2], 0.f);
activeShader->muColormapRange.Set(m);
}
}
else if (mColormapState == CM_FOGLAYER)
{
activeShader->muFixedColormap.Set(3);
}
else if (mColormapState == CM_LITE)
{
if (gl_enhanced_nightvision)
{
r = 0.375f, g = 1.0f, b = 0.375f;
}
else
{
r = g = b = 1.f;
}
activeShader->muFixedColormap.Set(2);
activeShader->muColormapStart.Set(r, g, b, 1.f);
}
else if (mColormapState >= CM_TORCH)
{
int flicker = mColormapState - CM_TORCH;
r = (0.8f + (7 - flicker) / 70.0f);
if (r > 1.0f) r = 1.0f;
b = g = r;
if (gl_enhanced_nightvision) b = g * 0.75f;
activeShader->muFixedColormap.Set(2);
activeShader->muColormapStart.Set(r, g, b, 1.f);
}
}
if (mTextureMatrixEnabled)
{
matrixToGL(mTextureMatrix, activeShader->texturematrix_index);
activeShader->currentTextureMatrixState = true;
}
else if (activeShader->currentTextureMatrixState)
{
activeShader->currentTextureMatrixState = false;
matrixToGL(identityMatrix, activeShader->texturematrix_index);
}
if (mModelMatrixEnabled)
{
matrixToGL(mModelMatrix, activeShader->modelmatrix_index);
VSMatrix norm;
norm.computeNormalMatrix(mModelMatrix);
matrixToGL(norm, activeShader->normalmodelmatrix_index);
activeShader->currentModelMatrixState = true;
}
else if (activeShader->currentModelMatrixState)
{
activeShader->currentModelMatrixState = false;
matrixToGL(identityMatrix, activeShader->modelmatrix_index);
matrixToGL(identityMatrix, activeShader->normalmodelmatrix_index);
}
return true;
}
