background_gfx.c File Reference

Macros
#define	RGBA_BUF_SIZE   32
#define	RGBA_BUF_SIZE   32

Functions
void	gfx_init_state (void)
s32	gfx_frame_filter_pass_0 (const u16 *frameBuffer0, const u16 *frameBuffer1, s32 y, s32 x, Color_RGBA8 *out)
void	gfx_frame_filter_pass_1 (Color_RGBA8 *filterBuf0, Color_RGBA8 filterBuf1, u16 *out)
void	func_80027600 (Color_RGBA8 *arg0, s16 *out)
void	func_80027774 (u16 *frameBuffer0, u16 *frameBuffer1, u16 *zBuffer)
void	gfx_transfer_frame_to_depth (u16 *frameBuffer0, u16 *frameBuffer1, u16 *zBuffer)
void	func_80027BAC (s32 arg0, s32 arg1)
void	gfx_draw_background (void)
	Logic for the drawing the scene background.

Variables
s32	gPauseBackgroundFade
Vp	D_80074200
Gfx	D_80074210 []
Gfx	D_80074230 []

Macro Definition Documentation

RGBA_BUF_SIZE [1/2]

#define RGBA_BUF_SIZE   32

RGBA_BUF_SIZE [2/2]

#define RGBA_BUF_SIZE   32

Function Documentation

func_80027600()

void func_80027600	(	Color_RGBA8 *	arg0,
		s16 *	out )

Referenced by func_80027774().

func_80027774()

void func_80027774	(	u16 *	frameBuffer0,
		u16 *	frameBuffer1,
		u16 *	zBuffer )

func_80027BAC()

void func_80027BAC	(	s32	arg0,
		s32	arg1 )

gfx_draw_background()

void gfx_draw_background

(

void

)

Logic for the drawing the scene background.

In normal operation, it draws the regular background. While opening pause menu, it does the following:

• Extracts coverage from the current framebuffer and saves it to nuGfxCfb[1] on the first frame.
• Copies the current framebuffer to the depth buffer to save it and applies a filter on the saved framebuffer based on the saved coverage values one frame later.
• Draws the saved framebuffer to the current framebuffer while the pause screen is opened, fading it in over time.

Bug

In 1-cycle mode, the two combiner cycles should be identical. Using Texel1 here in the second cycle, which is the actual cycle of the combiner used on hardware in 1-cycle mode, actually samples the next pixel's texel value instead of the current pixel's. This results in a one-pixel offset.

Bug

Due to the previous issue with the incorrect second cycle combiner, the devs added a 1-pixel offset to texture coordinates in this texrect to compensate for the combiner error.

Referenced by gfx_task_background().

gfx_frame_filter_pass_0()

s32 gfx_frame_filter_pass_0	(	const u16 *	frameBuffer0,
		const u16 *	frameBuffer1,
		s32	y,
		s32	x,
		Color_RGBA8 *	out )

Referenced by func_80027774(), and gfx_transfer_frame_to_depth().

gfx_frame_filter_pass_1()

void gfx_frame_filter_pass_1	(	Color_RGBA8 *	filterBuf0,
		Color_RGBA8	filterBuf1,
		u16 *	out )

Referenced by gfx_transfer_frame_to_depth().

gfx_init_state()

void gfx_init_state

(

void

)

Referenced by appendGfx_reset_tile_pattern(), and gfx_task_background().

gfx_transfer_frame_to_depth()

void gfx_transfer_frame_to_depth	(	u16 *	frameBuffer0,
		u16 *	frameBuffer1,
		u16 *	zBuffer )

Referenced by gfx_draw_background().

Variable Documentation

D_80074200

Vp D_80074200

Initial value:

= {
    .vp = {
        .vscale = {640, 480, 511, 0},
        .vtrans = {640, 480, 511, 0},
    }
}

D_80074210

Gfx D_80074210[]

Initial value:

= {
    gsDPSetRenderMode(G_RM_OPA_SURF, G_RM_OPA_SURF2),
    gsDPSetCombineMode(G_CC_SHADE, G_CC_SHADE),
    gsDPSetColorDither(G_CD_BAYER),
    gsSPEndDisplayList(),
}

Referenced by gfx_init_state().

D_80074230

Gfx D_80074230[]

Initial value:

= {
    gsSPViewport(&D_80074200),
    gsSPClearGeometryMode(G_ZBUFFER | G_SHADE | G_CULL_BOTH | G_FOG | G_LIGHTING | G_TEXTURE_GEN |
                          G_TEXTURE_GEN_LINEAR | G_LOD | G_SHADING_SMOOTH | G_CLIPPING | 0x0040F9FA),
    gsSPSetGeometryMode(G_ZBUFFER | G_SHADE | G_CULL_BACK | G_SHADING_SMOOTH),
    gsSPTexture(0, 0, 0, G_TX_RENDERTILE, G_OFF),
    gsSPEndDisplayList(),
}

Referenced by gfx_init_state().

gPauseBackgroundFade

s32 gPauseBackgroundFade

extern

Referenced by gfx_draw_background().