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GPU: Implement interlaced rendering in hardware backends

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This commit is contained in:
Connor McLaughlin
2020-04-04 00:11:33 +10:00
parent bb3c0a2ccc
commit 2aecb570c1
13 changed files with 123 additions and 89 deletions
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13
src/core/gpu.cpp
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@ -627,12 +627,12 @@ void GPU::Execute(TickCount ticks)
// alternating even line bit in 240-line mode
if (m_GPUSTAT.In480iMode())
{
m_GPUSTAT.drawing_even_line =
ConvertToBoolUnchecked((m_crtc_state.regs.Y + BoolToUInt32(!m_GPUSTAT.interlaced_field)) & u32(1));
m_GPUSTAT.displaying_odd_line =
ConvertToBoolUnchecked((m_crtc_state.regs.Y + BoolToUInt32(m_GPUSTAT.interlaced_field)) & u32(1));
}
else
{
m_GPUSTAT.drawing_even_line =
m_GPUSTAT.displaying_odd_line =
ConvertToBoolUnchecked((m_crtc_state.regs.Y + m_crtc_state.current_scanline) & u32(1));
}
@ -995,6 +995,9 @@ void GPU::SetDrawMode(u16 value)
m_draw_mode.mode_reg.bits = new_mode_reg.bits;
if (m_GPUSTAT.draw_to_displayed_field != new_mode_reg.draw_to_displayed_field)
FlushRender();
// Bits 0..10 are returned in the GPU status register.
m_GPUSTAT.bits =
(m_GPUSTAT.bits & ~(DrawMode::Reg::GPUSTAT_MASK)) | (ZeroExtend32(new_mode_reg.bits) & DrawMode::Reg::GPUSTAT_MASK);
@ -1124,7 +1127,7 @@ void GPU::DrawDebugStateWindow()
ImGui::Text("Vertical Interlace: %s (%s field)", m_GPUSTAT.vertical_interlace ? "Yes" : "No",
m_GPUSTAT.interlaced_field ? "odd" : "even");
ImGui::Text("Display Disable: %s", m_GPUSTAT.display_disable ? "Yes" : "No");
ImGui::Text("Drawing Even Line: %s", m_GPUSTAT.drawing_even_line ? "Yes" : "No");
ImGui::Text("Displaying Odd Line/Field: %s", m_GPUSTAT.displaying_odd_line ? "Yes" : "No");
ImGui::Text("Color Depth: %u-bit", m_GPUSTAT.display_area_color_depth_24 ? 24 : 15);
ImGui::Text("Start Offset: (%u, %u)", cs.regs.X.GetValue(), cs.regs.Y.GetValue());
ImGui::Text("Display Total: %u (%u) horizontal, %u vertical", cs.horizontal_total,
@ -1145,7 +1148,7 @@ void GPU::DrawDebugStateWindow()
if (ImGui::CollapsingHeader("GPU", ImGuiTreeNodeFlags_DefaultOpen))
{
ImGui::Text("Dither: %s", m_GPUSTAT.dither_enable ? "Enabled" : "Disabled");
ImGui::Text("Draw To Display Area: %s", m_GPUSTAT.draw_to_display_area ? "Enabled" : "Disabled");
ImGui::Text("Draw To Displayed Field: %s", m_GPUSTAT.draw_to_displayed_field ? "Enabled" : "Disabled");
ImGui::Text("Draw Set Mask Bit: %s", m_GPUSTAT.set_mask_while_drawing ? "Yes" : "No");
ImGui::Text("Draw To Masked Pixels: %s", m_GPUSTAT.check_mask_before_draw ? "Yes" : "No");
ImGui::Text("Reverse Flag: %s", m_GPUSTAT.reverse_flag ? "Yes" : "No");