Emulation/ppsspp
1
0
Fork 0
mirror of https://github.com/hrydgard/ppsspp.git synced 2025-04-02 11:01:50 -04:00
Code Issues Projects Releases Packages Wiki Activity

softgpu/TransformUnit: Implement remaining coordinate system transformations.

Browse source
This commit is contained in:
Tony Wasserka 2013-06-24 21:27:40 +02:00 • committed by neobrain
parent 1430ca3e73
commit 91ad30c287
2 changed files with 14 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
GPU/Software/TransformUnit.cpp
View file

@ -32,18 +32,29 @@ ViewCoords TransformUnit::WorldToView(const WorldCoords& coords)
ClipCoords TransformUnit::ViewToClip(const ViewCoords& coords)
{
ClipCoords ret;
return ret;
Vec4<float> coords4(coords.x, coords.y, coords.z, 1.0f);
Mat4x4<float> projection_matrix(gstate.projMatrix);
return ClipCoords(projection_matrix * coords4);
}
ScreenCoords TransformUnit::ClipToScreen(const ClipCoords& coords)
{
ScreenCoords ret;
float viewport_dx = gstate.viewportx2 - gstate.viewportx1; // TODO: -1?
float viewport_dy = gstate.viewporty2 - gstate.viewporty1; // TODO: -1?
float viewport_dz = gstate.viewportz2 - gstate.viewportz1; // TODO: -1?
// TODO: Check for invalid parameters (x2 < x1, etc)
ret.x = (coords.x * viewport_dx / coords.w + gstate.viewportx1) * 0xFFFF;
ret.y = (coords.y * viewport_dy / coords.w + gstate.viewporty1) * 0xFFFF;
ret.z = (coords.z * viewport_dz / coords.w + gstate.viewportz1) * 0xFFFF;
return ret;
}
DrawingCoords TransformUnit::ScreenToDrawing(const ScreenCoords& coords)
{
DrawingCoords ret;
ret.x = (coords.x - gstate.offsetx) & 0x3ff;
ret.y = (coords.y - gstate.offsety) & 0x3ff;
return ret;
}

2
GPU/Software/TransformUnit.h
View file

@ -35,7 +35,7 @@ struct ScreenCoords
u16 z;
};
typedef Vec2<u10> DrawingCoords;
typedef Vec2<u10> DrawingCoords; // TODO: Keep z component?
class TransformUnit
{