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NamcoGuncon: Add an option to scale X coordinates

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Fixes what appears to be curvature correction at the edges of the
screen.
This commit is contained in:
Connor McLaughlin
2020-12-19 14:22:59 +10:00
parent fad3d79895
commit 4860313bef
4 changed files with 24 additions and 6 deletions
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14
src/core/gpu.cpp
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@ -917,11 +917,21 @@ void GPU::UpdateCommandTickEvent()
m_command_tick_event->SetIntervalAndSchedule(GPUTicksToSystemTicks(m_pending_command_ticks));
}
bool GPU::ConvertScreenCoordinatesToBeamTicksAndLines(s32 window_x, s32 window_y, u32* out_tick, u32* out_line) const
bool GPU::ConvertScreenCoordinatesToBeamTicksAndLines(s32 window_x, s32 window_y, float x_scale, u32* out_tick,
u32* out_line) const
{
const auto [display_x, display_y] = m_host_display->ConvertWindowCoordinatesToDisplayCoordinates(
auto [display_x, display_y] = m_host_display->ConvertWindowCoordinatesToDisplayCoordinates(
window_x, window_y, m_host_display->GetWindowWidth(), m_host_display->GetWindowHeight(),
m_host_display->GetDisplayTopMargin());
if (x_scale != 1.0f)
{
const float dw = static_cast<float>(m_crtc_state.display_width);
float scaled_x = ((static_cast<float>(display_x) / dw) * 2.0f) - 1.0f; // 0..1 -> -1..1
scaled_x *= x_scale;
display_x = static_cast<s32>(((scaled_x + 1.0f) * 0.5f) * dw); // -1..1 -> 0..1
}
Log_DebugPrintf("win %d,%d -> disp %d,%d (size %u,%u frac %f,%f)", window_x, window_y, display_x, display_y,
m_crtc_state.display_width, m_crtc_state.display_height,
static_cast<float>(display_x) / static_cast<float>(m_crtc_state.display_width),