GTE: Make widescreen hack use display aspect ratio
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@ -13,6 +13,7 @@ A "BIOS" ROM image is required to to start the emulator and to play games. You c
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## Latest News
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- 2020/11/10: Widescreen hack now renders in the display aspect ratio instead of always 16:9.
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- 2020/11/01: Exclusive fullscreen option added for Windows D3D11 users. Enjoy buttery smooth PAL games.
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- 2020/10/31: Multisample antialiasing added as an enhancement.
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- 2020/10/30: Option to use analog stick as d-pad for analog controller added.
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@ -613,10 +613,52 @@ static void RTPS(const s16 V[3], u8 shift, bool lm, bool last)
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// MAC0=(((H*20000h/SZ3)+1)/2)*IR2+OFY, SY2=MAC0/10000h ;ScrY FIFO -400h..+3FFh
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const s64 result = static_cast<s64>(ZeroExtend64(UNRDivide(REGS.H, REGS.SZ3)));
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// (4 / 3) / (16 / 9) -> 0.75 -> (3 / 4)
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const s64 Sx = g_settings.gpu_widescreen_hack ?
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((((s64(result) * s64(REGS.IR1)) * s64(3)) / s64(4)) + s64(REGS.OFX)) :
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(s64(result) * s64(REGS.IR1) + s64(REGS.OFX));
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s64 Sx;
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if (g_settings.gpu_widescreen_hack)
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{
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const DisplayAspectRatio ar = g_settings.display_aspect_ratio;
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switch (ar)
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{
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case DisplayAspectRatio::R16_9:
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Sx = ((((s64(result) * s64(REGS.IR1)) * s64(3)) / s64(4)) + s64(REGS.OFX));
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break;
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case DisplayAspectRatio::R16_10:
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Sx = ((((s64(result) * s64(REGS.IR1)) * s64(5)) / s64(6)) + s64(REGS.OFX));
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break;
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case DisplayAspectRatio::R19_9:
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Sx = ((((s64(result) * s64(REGS.IR1)) * s64(12)) / s64(19)) + s64(REGS.OFX));
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break;
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case DisplayAspectRatio::R21_9:
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Sx = ((((s64(result) * s64(REGS.IR1)) * s64(4)) / s64(7)) + s64(REGS.OFX));
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break;
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case DisplayAspectRatio::R8_7:
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Sx = ((((s64(result) * s64(REGS.IR1)) * s64(7)) / s64(6)) + s64(REGS.OFX));
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break;
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case DisplayAspectRatio::R2_1:
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Sx = ((((s64(result) * s64(REGS.IR1)) * s64(2)) / s64(3)) + s64(REGS.OFX));
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break;
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case DisplayAspectRatio::R1_1:
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Sx = ((((s64(result) * s64(REGS.IR1)) * s64(7)) / s64(6)) + s64(REGS.OFX));
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break;
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case DisplayAspectRatio::R4_3:
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case DisplayAspectRatio::PAR1_1:
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default:
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Sx = (s64(result) * s64(REGS.IR1) + s64(REGS.OFX));
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break;
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}
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}
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else
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{
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Sx = (s64(result) * s64(REGS.IR1) + s64(REGS.OFX));
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}
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const s64 Sy = s64(result) * s64(REGS.IR2) + s64(REGS.OFY);
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CheckMACOverflow<0>(Sx);
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CheckMACOverflow<0>(Sy);
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@ -654,7 +696,53 @@ static void RTPS(const s16 V[3], u8 shift, bool lm, bool last)
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const float precise_h_div_sz = float(REGS.H) / precise_z;
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const float fofx = float(REGS.OFX) / float(1 << 16);
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const float fofy = float(REGS.OFY) / float(1 << 16);
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float precise_x = fofx + (precise_ir1 * precise_h_div_sz) * ((g_settings.gpu_widescreen_hack) ? 0.75f : 1.00f);
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float precise_x;
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if (g_settings.gpu_widescreen_hack)
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{
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precise_x = precise_ir1 * precise_h_div_sz;
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const DisplayAspectRatio ar = g_settings.display_aspect_ratio;
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switch (ar)
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{
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case DisplayAspectRatio::R16_9:
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precise_x = (precise_x * 3.0f) / 4.0f;
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break;
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case DisplayAspectRatio::R16_10:
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precise_x = (precise_x * 5.0f) / 6.0f;
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break;
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case DisplayAspectRatio::R19_9:
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precise_x = (precise_x * 12.0f) / 19.0f;
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break;
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case DisplayAspectRatio::R21_9:
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precise_x = (precise_x * 4.0f) / 7.0f;
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break;
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case DisplayAspectRatio::R8_7:
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precise_x = (precise_x * 7.0f) / 6.0f;
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break;
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case DisplayAspectRatio::R2_1:
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precise_x = (precise_x * 2.0f) / 3.0f;
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break;
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case DisplayAspectRatio::R1_1:
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precise_x = (precise_x * 7.0f) / 6.0f;
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break;
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case DisplayAspectRatio::R4_3:
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case DisplayAspectRatio::PAR1_1:
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default:
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break;
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}
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precise_x += fofx;
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}
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else
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{
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precise_x = fofx + (precise_ir1 * precise_h_div_sz);
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}
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float precise_y = fofy + (precise_ir2 * precise_h_div_sz);
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precise_x = std::clamp<float>(precise_x, -1024.0f, 1023.0f);
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@ -624,8 +624,8 @@ static std::array<retro_core_option_definition, 42> s_option_definitions = {{
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"Nearest"},
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{"duckstation_GPU.WidescreenHack",
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"Widescreen Hack",
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"Increases the field of view from 4:3 to 16:9 in 3D games. For 2D games, or games which use pre-rendered "
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"backgrounds, this enhancement will not work as expected.",
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"Increases the field of view from 4:3 to the chosen display aspect ratio in 3D games. For 2D games, or games which "
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"use pre-rendered backgrounds, this enhancement will not work as expected.",
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{{"true", "Enabled"}, {"false", "Disabled"}},
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"false"},
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{"duckstation_GPU.PGXPEnable",
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@ -20,9 +20,9 @@ EnhancementSettingsWidget::EnhancementSettingsWidget(QtHostInterface* host_inter
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SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.force43For24Bit, "Display", "Force4_3For24Bit");
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SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.chromaSmoothingFor24Bit, "GPU",
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"ChromaSmoothing24Bit");
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SettingWidgetBinder::BindWidgetToEnumSetting(
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m_host_interface, m_ui.textureFiltering, "GPU", "TextureFilter", &Settings::ParseTextureFilterName,
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&Settings::GetTextureFilterName, Settings::DEFAULT_GPU_TEXTURE_FILTER);
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SettingWidgetBinder::BindWidgetToEnumSetting(m_host_interface, m_ui.textureFiltering, "GPU", "TextureFilter",
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&Settings::ParseTextureFilterName, &Settings::GetTextureFilterName,
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Settings::DEFAULT_GPU_TEXTURE_FILTER);
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SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.widescreenHack, "GPU", "WidescreenHack");
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SettingWidgetBinder::BindWidgetToBoolSetting(m_host_interface, m_ui.pgxpEnable, "GPU", "PGXPEnable", false);
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@ -88,9 +88,9 @@ EnhancementSettingsWidget::EnhancementSettingsWidget(QtHostInterface* host_inter
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dialog->registerWidgetHelp(
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m_ui.widescreenHack, tr("Widescreen Hack"), tr("Unchecked"),
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tr("Scales vertex positions in screen-space to a widescreen aspect ratio, essentially "
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"increasing the field of view from 4:3 to 16:9 in 3D games. <br>For 2D games, or games which "
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"use pre-rendered backgrounds, this enhancement will not work as expected. <br><b><u>May not be compatible with "
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"all games.</u></b>"));
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"increasing the field of view from 4:3 to the chosen display aspect ratio in 3D games. <br>For 2D games, or "
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"games which use pre-rendered backgrounds, this enhancement will not work as expected. <br><b><u>May not be "
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"compatible with all games.</u></b>"));
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dialog->registerWidgetHelp(
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m_ui.pgxpEnable, tr("Geometry Correction"), tr("Unchecked"),
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tr("Reduces \"wobbly\" polygons and \"warping\" textures that are common in PS1 games. <br>Only "
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@ -69,7 +69,7 @@
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<item row="5" column="0" colspan="2">
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<widget class="QCheckBox" name="widescreenHack">
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<property name="text">
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<string>Widescreen Hack (render 3D in 16:9)</string>
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<string>Widescreen Hack (render 3D in display aspect ratio)</string>
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</property>
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</widget>
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</item>
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