void TinyRenderer::renderObject(TinyRenderObjectData& renderData)
{
int width = renderData.m_rgbColorBuffer.get_width();
int height = renderData.m_rgbColorBuffer.get_height();
Vec3f light_dir_local = Vec3f(renderData.m_lightDirWorld[0],renderData.m_lightDirWorld[1],renderData.m_lightDirWorld[2]);
Vec3f light_color = Vec3f(renderData.m_lightColor[0],renderData.m_lightColor[1],renderData.m_lightColor[2]);
float light_distance = renderData.m_lightDistance;
Model* model = renderData.m_model;
if (0==model)
return;
renderData.m_viewportMatrix = viewport(0,0,width, height);
b3AlignedObjectArray<float>& zbuffer = renderData.m_depthBuffer;
b3AlignedObjectArray<float>* shadowBufferPtr = renderData.m_shadowBuffer;
int* segmentationMaskBufferPtr = (renderData.m_segmentationMaskBufferPtr && renderData.m_segmentationMaskBufferPtr->size())?&renderData.m_segmentationMaskBufferPtr->at(0):0;
TGAImage& frame = renderData.m_rgbColorBuffer;
{
// light target is set to be the origin, and the up direction is set to be vertical up.
Matrix lightViewMatrix = lookat(light_dir_local*light_distance, Vec3f(0.0,0.0,0.0), Vec3f(0.0,0.0,1.0));
Matrix lightModelViewMatrix = lightViewMatrix*renderData.m_modelMatrix;
Matrix modelViewMatrix = renderData.m_viewMatrix*renderData.m_modelMatrix;
Vec3f localScaling(renderData.m_localScaling[0],renderData.m_localScaling[1],renderData.m_localScaling[2]);
Shader shader(model, light_dir_local, light_color, modelViewMatrix, lightModelViewMatrix, renderData.m_projectionMatrix,renderData.m_modelMatrix, renderData.m_viewportMatrix, localScaling, model->getColorRGBA(), width, height, shadowBufferPtr, renderData.m_lightAmbientCoeff, renderData.m_lightDiffuseCoeff, renderData.m_lightSpecularCoeff);
for (int i=0; i<model->nfaces(); i++)
{
for (int j=0; j<3; j++) {
shader.vertex(i, j);
}
mat<4,3,float> stackTris[3];
b3AlignedObjectArray< mat<4,3,float> > clippedTriangles;
clippedTriangles.initializeFromBuffer(stackTris,0,3);
bool hasClipped = clipTriangleAgainstNearplane(shader.varying_tri,clippedTriangles);
if (hasClipped)
{
for (int t=0;t<clippedTriangles.size();t++)
{
triangleClipped(clippedTriangles[t], shader.varying_tri, shader, frame, &zbuffer[0], segmentationMaskBufferPtr, renderData.m_viewportMatrix, renderData.m_objectIndex);
}
}
else
{
triangle(shader.varying_tri, shader, frame, &zbuffer[0], segmentationMaskBufferPtr, renderData.m_viewportMatrix, renderData.m_objectIndex);
}
}
}
}
void TinyRenderer::renderObject(TinyRenderObjectData& renderData)
{
B3_PROFILE("renderObject");
int width = renderData.m_rgbColorBuffer.get_width();
int height = renderData.m_rgbColorBuffer.get_height();
Vec3f light_dir_local = Vec3f(renderData.m_lightDirWorld[0],renderData.m_lightDirWorld[1],renderData.m_lightDirWorld[2]);
Vec3f light_color = Vec3f(renderData.m_lightColor[0],renderData.m_lightColor[1],renderData.m_lightColor[2]);
float light_distance = renderData.m_lightDistance;
Model* model = renderData.m_model;
if (0==model)
return;
//discard invisible objects (zero alpha)
if (model->getColorRGBA()[3]==0)
return;
renderData.m_viewportMatrix = viewport(0,0,width, height);
b3AlignedObjectArray<float>& zbuffer = renderData.m_depthBuffer;
b3AlignedObjectArray<float>* shadowBufferPtr = renderData.m_shadowBuffer;
int* segmentationMaskBufferPtr = (renderData.m_segmentationMaskBufferPtr && renderData.m_segmentationMaskBufferPtr->size())?&renderData.m_segmentationMaskBufferPtr->at(0):0;
TGAImage& frame = renderData.m_rgbColorBuffer;
{
// light target is set to be the origin, and the up direction is set to be vertical up.
Matrix lightViewMatrix = lookat(light_dir_local*light_distance, Vec3f(0.0,0.0,0.0), Vec3f(0.0,0.0,1.0));
Matrix lightModelViewMatrix = lightViewMatrix*renderData.m_modelMatrix;
Matrix modelViewMatrix = renderData.m_viewMatrix*renderData.m_modelMatrix;
Vec3f localScaling(renderData.m_localScaling[0],renderData.m_localScaling[1],renderData.m_localScaling[2]);
Matrix viewMatrixInv = renderData.m_viewMatrix.invert();
btVector3 P(viewMatrixInv[0][3], viewMatrixInv[1][3], viewMatrixInv[2][3]);
Shader shader(model, light_dir_local, light_color, modelViewMatrix, lightModelViewMatrix, renderData.m_projectionMatrix,renderData.m_modelMatrix, renderData.m_viewportMatrix, localScaling, model->getColorRGBA(), width, height, shadowBufferPtr, renderData.m_lightAmbientCoeff, renderData.m_lightDiffuseCoeff, renderData.m_lightSpecularCoeff);
{
B3_PROFILE("face");
for (int i=0; i<model->nfaces(); i++)
{
for (int j=0; j<3; j++) {
shader.vertex(i, j);
}
// backface culling
btVector3 v0(shader.world_tri.col(0)[0], shader.world_tri.col(0)[1], shader.world_tri.col(0)[2]);
btVector3 v1(shader.world_tri.col(1)[0], shader.world_tri.col(1)[1], shader.world_tri.col(1)[2]);
btVector3 v2(shader.world_tri.col(2)[0], shader.world_tri.col(2)[1], shader.world_tri.col(2)[2]);
btVector3 N = (v1-v0).cross(v2-v0);
if ((v0-P).dot(N) >= 0)
continue;
mat<4,3,float> stackTris[3];
b3AlignedObjectArray< mat<4,3,float> > clippedTriangles;
clippedTriangles.initializeFromBuffer(stackTris,0,3);
bool hasClipped = clipTriangleAgainstNearplane(shader.varying_tri,clippedTriangles);
if (hasClipped)
{
for (int t=0;t<clippedTriangles.size();t++)
{
triangleClipped(clippedTriangles[t], shader.varying_tri, shader, frame, &zbuffer[0], segmentationMaskBufferPtr, renderData.m_viewportMatrix, renderData.m_objectIndex);
}
}
else
{
triangle(shader.varying_tri, shader, frame, &zbuffer[0], segmentationMaskBufferPtr, renderData.m_viewportMatrix, renderData.m_objectIndex);
}
}
}
}
}
