Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-06-01 10:31:48 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

Adapted sub-routines to HW needs

Browse Source
This commit is contained in:
Angelo Salese 2011-09-06 16:24:28 +00:00
parent bf1c10d54c
commit 8f74e9b610
1 changed files with 21 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
src/mame/video/taitoair.c
View File

@ -460,16 +460,17 @@ void multVecMtx(const INT16* vec4, const float* m, float* result)
#undef M
}
void projectEyeCoordToScreen(float* projectionMatrix,
const int xRes, const int yRes,
int projectEyeCoordToScreen(float* projectionMatrix,
const int Res,
INT16* eyePoint3d,
int* result)
int type)
{
int res;
/* Return (-1, -1) if the eye point is behind camera */
result[0] = -1;
result[1] = -1;
res = -1;
if (eyePoint3d[2] <= 0.0)
return;
return res;
/* Coordinate system flip */
eyePoint3d[0] *= -1;
@ -481,12 +482,10 @@ void projectEyeCoordToScreen(float* projectionMatrix,
multVecMtx(eyePoint3d, projectionMatrix, deviceCoordinates);
/* We're only interested if it projects within the device */
if ( ( deviceCoordinates[0] >= -1.0) && ( deviceCoordinates[0] <= 1.0) &&
( deviceCoordinates[1] >= -1.0) && ( deviceCoordinates[1] <= 1.0) )
{
result[0] = (int)( ((deviceCoordinates[0] + 1.0f) / 2.0) * (xRes-1) );
result[1] = (int)( ((deviceCoordinates[1] + 1.0f) / 2.0) * (yRes-1) );
}
if ( ( deviceCoordinates[type] >= -1.0) && ( deviceCoordinates[type] <= 1.0))
res = (int)( ((deviceCoordinates[type] + 0.0f) / 1.0) * (Res-1) );
return res;
}
void airInfernoFrustum(const INT16 leftExtent, const INT16 bottomExtent, float* m)
@ -548,15 +547,13 @@ READ16_HANDLER( dsp_x_return_r )
/* Construct a frustum from the system's most recently set left and bottom extents */
float m[16];
airInfernoFrustum(state->m_frustumLeft, state->m_frustumBottom, m);
int res;
int result[2];
projectEyeCoordToScreen(m,
32*16, /* These are defined in the machine ctor */
28*16, /* not sure how to get them here or if they're even correct */
state->m_eyecoordBuffer,
result);
res = projectEyeCoordToScreen(m,
32*16, /* x max screen size */
state->m_eyecoordBuffer,0);
return result[0];
return res;
}
READ16_HANDLER( dsp_y_return_r )
@ -566,15 +563,13 @@ READ16_HANDLER( dsp_y_return_r )
/* Construct a frustum from the system's most recently set left and bottom extents */
float m[16];
airInfernoFrustum(state->m_frustumLeft, state->m_frustumBottom, m);
int res;
int result[2];
projectEyeCoordToScreen(m,
32*16, /* These are defined in the machine ctor */
28*16, /* not sure how to get them here or if they're even correct */
state->m_eyecoordBuffer,
result);
res = projectEyeCoordToScreen(m,
32*16, /* y max screen size */
state->m_eyecoordBuffer,1);
return result[1];
return res;
}
VIDEO_START( taitoair )