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GPU: Truncate sprite/rectangle positions to 12 bits before rendering

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Fixes disappearing objects in Skullmonkeys.
This commit is contained in:
Connor McLaughlin
2020-04-27 12:51:17 +10:00
parent 63692a012f
commit 304391bd00
3 changed files with 16 additions and 14 deletions
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4
src/core/gpu_hw.cpp
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@ -270,8 +270,8 @@ void GPU_HW::LoadVertices()
{
const u32 color = rc.color_for_first_vertex;
const VertexPosition vp{m_fifo.Pop()};
const s32 pos_x = m_drawing_offset.x + vp.x;
const s32 pos_y = m_drawing_offset.y + vp.y;
const s32 pos_x = TruncateVertexPosition(m_drawing_offset.x + vp.x);
const s32 pos_y = TruncateVertexPosition(m_drawing_offset.y + vp.y);
const auto [texcoord_x, texcoord_y] = UnpackTexcoord(rc.texture_enable ? Truncate16(m_fifo.Pop()) : 0);
u16 orig_tex_left = ZeroExtend16(texcoord_x);