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Render shadow of torus with shadow buffer and index from triangle order.

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This commit is contained in:
yunfeibai
2016-11-27 15:32:55 -08:00
parent 29809a4471
commit 529274a3f4
7 changed files with 76 additions and 31 deletions
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16
examples/TinyRenderer/our_gl.cpp
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@@ -4,11 +4,15 @@
#include "our_gl.h"
#include "Bullet3Common/b3MinMax.h"
extern int indexmap[10000000];
extern int count;
extern bool setindex;
IShader::~IShader() {}
Matrix viewport(int x, int y, int w, int h)
{
/*
Matrix Viewport;
Viewport = Matrix::identity();
Viewport[0][3] = x+w/2.f;
@@ -18,8 +22,8 @@ Matrix viewport(int x, int y, int w, int h)
Viewport[1][1] = h/2.f;
Viewport[2][2] = 0;
return Viewport;
*/
/*
Matrix Viewport;
Viewport = Matrix::identity();
Viewport[0][3] = x+w/2.f;
@@ -29,7 +33,7 @@ Matrix viewport(int x, int y, int w, int h)
Viewport[1][1] = h/2.f;
Viewport[2][2] = .5f;
return Viewport;
*/
}
Matrix projection(float coeff) {
@@ -140,7 +144,11 @@ void triangle(mat<4,3,float> &clipc, IShader &shader, TGAImage &image, float *zb
Vec3f bc_clip = Vec3f(bc_screen.x/pts[0][3], bc_screen.y/pts[1][3], bc_screen.z/pts[2][3]);
bc_clip = bc_clip/(bc_clip.x+bc_clip.y+bc_clip.z);
float frag_depth = -1*(clipc[2]*bc_clip);
if (bc_screen.x<0 || bc_screen.y<0 || bc_screen.z<0 ||
if (setindex)
{
indexmap[count] = P.x+P.y*image.get_width();
}
if (bc_screen.x<0 || bc_screen.y<0 || bc_screen.z<0 ||
zbuffer[P.x+P.y*image.get_width()]>frag_depth)
continue;
bool discard = shader.fragment(bc_clip, color);