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chihiro.cpp: tidy up for pull (nw)

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This commit is contained in:
yz70s 2016-10-09 17:39:24 +02:00
parent 98753caf13
commit 1b5843f148
1 changed files with 3 additions and 25 deletions
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28
src/mame/video/chihiro.cpp
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@ -2360,7 +2360,6 @@ void nv2a_renderer::convert_vertices_poly(vertex_nv *source, nv2avertex_t *desti
{
vertex_nv vert[4];
int m, u;
//float t[4];
float v[4];
// take each vertex with its attributes and obtain data for drawing
@ -2369,32 +2368,11 @@ void nv2a_renderer::convert_vertices_poly(vertex_nv *source, nv2avertex_t *desti
// transformation matrices
// this part needs more testing
for (m = 0; m < count; m++) {
#if 0
for (int i = 0; i < 4; i++) {
t[i] = 0;
// in matrix.modelview[c][r] c is the column and r is the row of the direct3d matrix
for (int j = 0; j < 4; j++)
t[i] += matrix.modelview[i][j] * source[m].attribute[0].fv[j];
};
for (int i = 0; i < 4; i++) {
v[i] = 0;
for (int j = 0; j < 4; j++)
v[i] += matrix.composite[i][j] * t[j];
};
#else
for (int i = 0; i < 4; i++) {
v[i] = 0;
for (int j = 0; j < 4; j++)
v[i] += matrix.composite[i][j] * source[m].attribute[0].fv[j];
};
#endif
/* it seems these are not needed ?
for (int i = 0; i < 3; i++) {
v[i] *= matrix.scale[i];
}
for (int i = 0; i < 3; i++) {
v[i] += matrix.translate[i];
}*/
destination[m].w = v[3];
destination[m].x = (v[0] / v[3])*supersample_factor_x; // source[m].attribute[0].fv[0];
destination[m].y = (v[1] / v[3])*supersample_factor_y; // source[m].attribute[0].fv[1];
@ -3505,17 +3483,17 @@ int nv2a_renderer::geforce_exec_method(address_space & space, UINT32 chanel, UIN
// modelview matrix
if ((maddress >= 0x0480) && (maddress < 0x04c0)) {
maddress = (maddress - 0x0480) / 4;
/* the modelview matrix is obtained by direct3d by multiplyng the world matrix and the view matrix
/* the modelview matrix is obtained by direct3d by multiplying the world matrix and the view matrix
modelview = world * view
given a point in 3d space with coordinates x y and z, to find te transformed coordinates
first create a row vector with components (x,y,z,1) then multyply the vector by the matrix
first create a row vector with components (x,y,z,1) then multiply the vector by the matrix
transformed = rowvector * matrix
in direct3d the matrix is stored as the sequence (first digit row, second digit column)
11 12 13 14
21 22 23 24
31 32 33 34
41 42 43 44
but it is sent trasposed as the sequence
but it is sent transposed as the sequence
11 21 31 41 12 22 32 42 13 23 33 43 14 24 34 44
so in matrix.modelview[x][y] x is the column and y is the row of the direct3d matrix
*/