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- Improve weapon hud model in the software renderer

This commit is contained in:
Magnus Norddahl 2017-11-29 00:33:37 +01:00
parent f9fb4a0a17
commit b621dccb9c
1 changed files with 20 additions and 1 deletions
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21
src/swrenderer/things/r_model.cpp
View File

@ -115,6 +115,25 @@ namespace swrenderer
VSMatrix SWModelRenderer::GetViewToWorldMatrix()
{
// Calculate the WorldToView matrix as it would have looked like without yshearing:
const auto &Viewpoint = Thread->Viewport->viewpoint;
const auto &Viewwindow = Thread->Viewport->viewwindow;
double radPitch = Viewpoint.Angles.Pitch.Normalized180().Radians();
double angx = cos(radPitch);
double angy = sin(radPitch) * level.info->pixelstretch;
double alen = sqrt(angx*angx + angy*angy);
float adjustedPitch = (float)asin(angy / alen);
float adjustedViewAngle = (float)(Viewpoint.Angles.Yaw - 90).Radians();
float ratio = Viewwindow.WidescreenRatio;
float fovratio = (Viewwindow.WidescreenRatio >= 1.3f) ? 1.333333f : ratio;
float fovy = (float)(2 * DAngle::ToDegrees(atan(tan(Viewpoint.FieldOfView.Radians() / 2) / fovratio)).Degrees);
TriMatrix altWorldToView =
TriMatrix::rotate(adjustedPitch, 1.0f, 0.0f, 0.0f) *
TriMatrix::rotate(adjustedViewAngle, 0.0f, -1.0f, 0.0f) *
TriMatrix::scale(1.0f, level.info->pixelstretch, 1.0f) *
TriMatrix::swapYZ() *
TriMatrix::translate((float)-Viewpoint.Pos.X, (float)-Viewpoint.Pos.Y, (float)-Viewpoint.Pos.Z);
TriMatrix swapYZ = TriMatrix::null();
swapYZ.matrix[0 + 0 * 4] = 1.0f;
swapYZ.matrix[1 + 2 * 4] = 1.0f;
@ -122,7 +141,7 @@ namespace swrenderer
swapYZ.matrix[3 + 3 * 4] = 1.0f;
VSMatrix worldToView;
worldToView.loadMatrix((Thread->Viewport->WorldToView * swapYZ).matrix);
worldToView.loadMatrix((altWorldToView * swapYZ).matrix);
VSMatrix objectToWorld;
worldToView.inverseMatrix(objectToWorld);