void CRenderingContext::RenderBillboard(const CMaterialHandle& hMaterial, float flRadius, Vector vecUp, Vector vecRight)
{
TAssert(hMaterial.IsValid());
if (!hMaterial.IsValid())
return;
vecUp *= flRadius;
vecRight *= flRadius;
// Clear out any existing rotation so that they don't interfere with the billboarding below.
GetContext().m_mTransformations.SetAngles(EAngle(0, 0, 0));
GetContext().m_bTransformUpdated = false;
if (GetContext().m_hMaterial != hMaterial)
UseMaterial(hMaterial);
BeginRenderTriFan();
TexCoord(0.0f, 1.0f);
Vertex(-vecRight + vecUp);
TexCoord(0.0f, 0.0f);
Vertex(-vecRight - vecUp);
TexCoord(1.0f, 0.0f);
Vertex(vecRight - vecUp);
TexCoord(1.0f, 1.0f);
Vertex(vecRight + vecUp);
EndRender();
}
CRenderingContext::CRenderingContext(CRenderer* pRenderer, bool bInherit)
{
m_pRenderer = pRenderer;
m_clrRender = ::Color(255, 255, 255, 255);
s_aContexts.push_back();
if (bInherit && s_aContexts.size() > 1)
{
CRenderContext& oLastContext = s_aContexts[s_aContexts.size()-2];
CRenderContext& oThisContext = GetContext();
oThisContext.m_mProjection = oLastContext.m_mProjection;
oThisContext.m_mView = oLastContext.m_mView;
oThisContext.m_mTransformations = oLastContext.m_mTransformations;
oThisContext.m_hMaterial = oLastContext.m_hMaterial;
oThisContext.m_pFrameBuffer = oLastContext.m_pFrameBuffer;
tstrncpy(oThisContext.m_szProgram, PROGRAM_LEN, oLastContext.m_szProgram, PROGRAM_LEN);
oThisContext.m_pShader = oLastContext.m_pShader;
oThisContext.m_rViewport = oLastContext.m_rViewport;
oThisContext.m_eBlend = oLastContext.m_eBlend;
oThisContext.m_flAlpha = oLastContext.m_flAlpha;
oThisContext.m_bDepthMask = oLastContext.m_bDepthMask;
oThisContext.m_bDepthTest = oLastContext.m_bDepthTest;
oThisContext.m_eDepthFunction = oLastContext.m_eDepthFunction;
oThisContext.m_bCull = oLastContext.m_bCull;
oThisContext.m_bWinding = oLastContext.m_bWinding;
m_pShader = oThisContext.m_pShader;
if (m_pShader)
m_iProgram = m_pShader->m_iProgram;
else
m_iProgram = 0;
}
else
{
m_pShader = NULL;
BindTexture(0);
UseMaterial(CMaterialHandle());
UseFrameBuffer(NULL);
UseProgram("");
SetViewport(Rect(0, 0, Application()->GetWindowWidth(), Application()->GetWindowHeight()));
SetBlend(BLEND_NONE);
SetAlpha(1);
SetDepthMask(true);
SetDepthTest(true);
SetDepthFunction(DF_LESS);
SetBackCulling(true);
SetWinding(true);
}
}
CRenderingContext::~CRenderingContext()
{
TAssert(s_aContexts.size());
s_aContexts.pop_back();
if (s_aContexts.size())
{
CRenderContext& oContext = GetContext();
UseMaterial(oContext.m_hMaterial);
UseFrameBuffer(oContext.m_pFrameBuffer);
UseProgram(oContext.m_pShader);
if (*oContext.m_szProgram)
{
oContext.m_bProjectionUpdated = false;
oContext.m_bViewUpdated = false;
oContext.m_bTransformUpdated = false;
}
SetViewport(oContext.m_rViewport);
SetBlend(oContext.m_eBlend);
SetAlpha(oContext.m_flAlpha);
SetDepthMask(oContext.m_bDepthMask);
SetDepthTest(oContext.m_bDepthTest);
SetDepthFunction(oContext.m_eDepthFunction);
SetBackCulling(oContext.m_bCull);
SetWinding(oContext.m_bWinding);
}
else
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, 0);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if (m_pRenderer)
glViewport(0, 0, (GLsizei)m_pRenderer->m_iWidth, (GLsizei)m_pRenderer->m_iHeight);
else
glViewport(0, 0, (GLsizei)Application()->GetWindowWidth(), (GLsizei)Application()->GetWindowHeight());
glUseProgram(0);
glDisablei(GL_BLEND, 0);
glDepthMask(true);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glDepthFunc(GL_LESS);
glFrontFace(GL_CCW);
}
}
void CRenderingContext::RenderBillboard(const CMaterialHandle& hMaterial, float flRadius, Vector vecUp, Vector vecRight)
{
TAssert(hMaterial.IsValid());
if (!hMaterial.IsValid())
return;
vecUp *= flRadius;
vecRight *= flRadius;
UseMaterial(hMaterial);
BeginRenderTriFan();
TexCoord(0.0f, 1.0f);
Vertex(-vecRight + vecUp);
TexCoord(0.0f, 0.0f);
Vertex(-vecRight - vecUp);
TexCoord(1.0f, 0.0f);
Vertex(vecRight - vecUp);
TexCoord(1.0f, 1.0f);
Vertex(vecRight + vecUp);
EndRender();
}
void CRenderingContext::UseMaterial(const tstring& sName)
{
UseMaterial(CMaterialLibrary::FindAsset(sName));
}
void _stdcall COBJModel::RenderToDisplayList(const Face *pFaces,
const unsigned int iFaceCount,
const Material *pMaterials)
{
////////////////////////////////////////////////////////////////////////
// Render a list of faces into a display list
////////////////////////////////////////////////////////////////////////
int i, j;
float fNormal[3];
int iPreviousMaterial = -1;
// Generate & save display list index
// Render model into the display list
glNewList(m_iDisplayList, GL_COMPILE);
// Save texture bit to recover from the various texture state changes
glPushAttrib(GL_TEXTURE_BIT);
// Activate automatic texture coord generation if no coords loaded
if (!pFaces[0].pTexCoords)
GenTexCoords();
// Use default material if no materials are loaded
if (!pMaterials)
UseMaterial(NULL);
// Process all faces
for (i=0; i<(int) iFaceCount; i++)
{
// Any materials loaded ?
if (pMaterials)
// Set material (if it differs from the previous one)
if (iPreviousMaterial != (int) pFaces[i].iMaterialIndex)
{
iPreviousMaterial = pFaces[i].iMaterialIndex;
UseMaterial(&pMaterials[pFaces[i].iMaterialIndex]);
}
// Set primitive of the current face
switch (pFaces[i].iNumVertices)
{
case 3:
glBegin(GL_TRIANGLES);
break;
case 4:
glBegin(GL_QUADS);
break;
default:
glBegin(GL_POLYGON);
}
// Calculate and set face normal if no vertex normals are specified
if (!pFaces[i].pNormals)
{
GetFaceNormal(fNormal, &pFaces[i]);
glNormal3fv(fNormal);
}
// Process all vertices
for (j=0; j<(int) pFaces[i].iNumVertices; j++)
{
// Set vertex normal (if vertex normals are specified)
if (pFaces[i].pNormals)
glNormal3f(pFaces[i].pNormals[j].fX,
pFaces[i].pNormals[j].fY, pFaces[i].pNormals[j].fZ);
// Set texture coordinates (if any specified)
if (pFaces[i].pTexCoords)
glTexCoord2f(pFaces[i].pTexCoords[j].fX,
pFaces[i].pTexCoords[j].fY);
// Set vertex
glVertex3f(pFaces[i].pVertices[j].fX,
pFaces[i].pVertices[j].fY, pFaces[i].pVertices[j].fZ);
}
glEnd();
}
glPopAttrib();
glEndList();
}
