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

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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
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13
Userland/Libraries/LibGL/Matrix.cpp
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@ -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;
}
}