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For some reason the resolution on duckstation is 640x464.
Does not run in pcsx-redux, known issue based on the discussions
This commit is contained in:
Edward R. Gonzalez
2025-08-04 21:30:26 -04:00
parent 2eb0c788ce
commit 48b8a68d9e
4 changed files with 175 additions and 7 deletions
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code/graphics_system/gp.s
+20 -6
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@@ -35,7 +35,9 @@ gp_HorizontalDisplayRange_3168_608 equ 0x06 << gcmd_offset | 0xC60 << 12 | 0x260
; 0 - 9 Y1 (NTSC = 88h - (240 / 2), (PAL = A3h - (288 / 2)) ; \ scanline numbers on screen,
; 10 - 19 Y2 (NTSC = 88h + (240 / 2), (PAL = A3h + (288 / 2)) ; / relative to VSYNC
; 20 - 23 Not used (zero)
gp_VerticalDisplayRange_264_24 equ 0x07 << gcmd_offset | 264 << 10 | 24
gp_VerticalDiplayRange equ 0x07 << gcmd_offset
gp_VerticalDisplayRange_264_24 equ gp_VerticalDiplayRange | 264 << 10 | 24
gp_VerticalDisplayRange_504_24 equ gp_VerticalDiplayRange | 504 << 10 | 24
; GP1(08h) - Display mode
; 0-1 Horizontal Resolution 1 (0=256, 1=320, 2=512, 3=640) ;GPUSTAT.17-18
@@ -46,8 +48,18 @@ gp_VerticalDisplayRange_264_24 equ 0x07 << gcmd_offset | 264 << 10 | 24
; 6 Horizontal Resolution 2 (0=256/320/512/640, 1=368) ;GPUSTAT.16
; 7 Flip screen horizontally (0=Off, 1=On, v1 only) ;GPUSTAT.14
; 8-23 Not used (zero)
@DisplayMode equ 0x08
gp_DisplayMode_320x240_15bit_NTSC equ @DisplayMode << gcmd_offset | 0x0 << 7 | 0x0 << 6 | 0x0 << 5 | 0x0 << 4 | 0x0 << 3 | 0x0 << 2 | 0x1
gp_DisplayMode equ 0x8 << gcmd_offset
gp_Disp_HRes_256 equ 0x0
gp_Disp_HRes_320 equ 0x1
gp_Disp_HRes_512 equ 0x2
gp_Disp_HRes_640 equ 0x3
gp_Disp_VRes_240 equ 0x0 << 2
gp_Disp_VRes_480 equ 0x1 << 2
gp_Disp_Color15 equ 0x0 << 4
gp_Disp_Color24 equ 0x1 << 4
gp_Disp_VInterlace equ 0x1 << 5
gp_DisplayMode_320x240_15bit_NTSC equ gp_DisplayMode | gp_Disp_HRes_320 | gp_Disp_VRes_240 | gp_Disp_Color15
gp_DisplayMOde_640x480_24bbp_NTSC equ gp_DisplayMode | gp_Disp_HRes_640 | gp_Disp_VRes_480 | gp_Disp_Color24 | gp_Disp_VInterlace
;GP0(E1h) - Draw Mode setting (aka "Texpage")
; 0 - 3 Texture page X Base (N * 64) (ie. in 64-halfword steps) ; GPUSTAT.0-3
@@ -141,8 +153,9 @@ gp_b10_Y equ 10
gp_b16_X equ 0
gp_b16_Y equ 16
gp_pixel equ (2 * byte)
gp_vec2 equ word
gp_pixel16 equ (2 * byte)
gp_pixel24 equ (3 * byte)
gp_vec2 equ word
.macro gp_push_pak, port, reg_scratch, packet
load_imm reg_scratch, packet
@@ -153,7 +166,8 @@ gp_vec2 equ word
store_word reg_scratch, port
.endmacro
.org 0x80010000 + 3000
// TODO(Ed): Figure out an auto region?
.org 0x80010000 + 2000
.func gp_draw_tri_flat ;(
gp_draw_tri_flat__sp_size equ (3 * gp_vec2)