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LibGL+Lib*GPU: Set model view and projection matrices separately

LibSoftGPU used to calculate the normal transformation based on the
model view transformation for every primitive, because that's when we
sent over the matrix. By making LibGL a bit smarter and only update the
matrices when they could have changed, we only need to calculate the
normal transformation once on every matrix update.

When viewing `Tuba.obj` in 3DFileViewer, this brings the percentage of
time spent in `FloatMatrix4x4::inverse()` down from 15% to 0%. :^)
This commit is contained in:
Jelle Raaijmakers 2023-10-05 22:01:35 +02:00
parent 126adfc392
commit edcb6176ce
8 changed files with 75 additions and 24 deletions

View file

@ -125,6 +125,7 @@ void GLContext::gl_pop_matrix()
m_current_matrix_stack->take_last();
m_current_matrix = &m_current_matrix_stack->last();
m_matrices_dirty = true;
}
void GLContext::gl_push_matrix()
@ -135,6 +136,7 @@ void GLContext::gl_push_matrix()
m_current_matrix_stack->append(*m_current_matrix);
m_current_matrix = &m_current_matrix_stack->last();
m_matrices_dirty = true;
}
void GLContext::gl_rotate(GLfloat angle, GLfloat x, GLfloat y, GLfloat z)
@ -167,4 +169,15 @@ void GLContext::gl_translate(GLfloat x, GLfloat y, GLfloat z)
update_current_matrix(*m_current_matrix * translation_matrix);
}
void GLContext::sync_matrices()
{
if (!m_matrices_dirty)
return;
m_rasterizer->set_model_view_transform(model_view_matrix());
m_rasterizer->set_projection_transform(projection_matrix());
m_matrices_dirty = false;
}
}