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LibGL+LibSoftGPU+LibGfx: Reimplement normal transformation

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We now support generating top-left submatrices from a `Gfx::Matrix`
and we move the normal transformation calculation into
`SoftGPU::Device`. No functional changes.
This commit is contained in:
Jelle Raaijmakers 2022-03-23 14:07:27 +01:00 • committed by Brian Gianforcaro
parent 74de8e4224
commit 8a3242cb83
4 changed files with 22 additions and 14 deletions
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11
Userland/Libraries/LibGL/GLContext.cpp
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@ -379,16 +379,7 @@ void GLContext::gl_end()
VERIFY_NOT_REACHED();
}
// Set up normals transform by taking the upper left 3x3 elements from the model view matrix
// See section 2.11.3 of the OpenGL 1.5 spec
auto const& mv_elements = m_model_view_matrix.elements();
auto const model_view_transposed = FloatMatrix3x3(
mv_elements[0][0], mv_elements[1][0], mv_elements[2][0],
mv_elements[0][1], mv_elements[1][1], mv_elements[2][1],
mv_elements[0][2], mv_elements[1][2], mv_elements[2][2]);
auto const& normal_transform = model_view_transposed.inverse();
m_rasterizer.draw_primitives(primitive_type, m_model_view_matrix, normal_transform, m_projection_matrix, m_texture_matrix, m_vertex_list, enabled_texture_units);
m_rasterizer.draw_primitives(primitive_type, m_model_view_matrix, m_projection_matrix, m_texture_matrix, m_vertex_list, enabled_texture_units);
m_vertex_list.clear_with_capacity();
}