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Doc shrink_window, rename system to Letterbox (#1341)

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* docs

* missed some hex

* document Gfx_SetupFrame

* review
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fig02 2022-08-15 09:39:06 -04:00 • committed by GitHub
parent dda78f9e2c
commit fec5cd84af
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24 changed files with 134 additions and 107 deletions
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34
src/code/z_rcp.c
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@ -1438,28 +1438,39 @@ Gfx* Gfx_EnvColor(GraphicsContext* gfxCtx, s32 r, s32 g, s32 b, s32 a) {
return displayList;
}
void func_80095248(GraphicsContext* gfxCtx, u8 r, u8 g, u8 b) {
/**
* Sets up the frame for drawing.
* Initializes the scissor region to full screen.
* Set up the framebuffer and z-buffer.
* The whole screen is filled with the color supplied as arguments.
* Letterbox is also applied here, and will share the color of the screen base.
*/
void Gfx_SetupFrame(GraphicsContext* gfxCtx, u8 r, u8 g, u8 b) {
OPEN_DISPS(gfxCtx, "../z_rcp.c", 2386);
// Set up the RDP render state for rectangles in FILL mode
gSPDisplayList(POLY_OPA_DISP++, sFillSetupDL);
gSPDisplayList(POLY_XLU_DISP++, sFillSetupDL);
gSPDisplayList(OVERLAY_DISP++, sFillSetupDL);
// Set the scissor region to the full screen
gDPSetScissor(POLY_OPA_DISP++, G_SC_NON_INTERLACE, 0, 0, gScreenWidth, gScreenHeight);
gDPSetScissor(POLY_XLU_DISP++, G_SC_NON_INTERLACE, 0, 0, gScreenWidth, gScreenHeight);
gDPSetScissor(OVERLAY_DISP++, G_SC_NON_INTERLACE, 0, 0, gScreenWidth, gScreenHeight);
// Set up the framebuffer, primitives will be drawn here
gDPSetColorImage(POLY_OPA_DISP++, G_IM_FMT_RGBA, G_IM_SIZ_16b, gScreenWidth, gfxCtx->curFrameBuffer);
gDPSetColorImage(POLY_OPA_DISP++, G_IM_FMT_RGBA, G_IM_SIZ_16b, gScreenWidth, gfxCtx->curFrameBuffer);
gDPSetColorImage(POLY_XLU_DISP++, G_IM_FMT_RGBA, G_IM_SIZ_16b, gScreenWidth, gfxCtx->curFrameBuffer);
gDPSetColorImage(OVERLAY_DISP++, G_IM_FMT_RGBA, G_IM_SIZ_16b, gScreenWidth, gfxCtx->curFrameBuffer);
// Set up the z-buffer
gDPSetDepthImage(POLY_OPA_DISP++, gZBuffer);
gDPSetDepthImage(POLY_XLU_DISP++, gZBuffer);
gDPSetDepthImage(OVERLAY_DISP++, gZBuffer);
if ((R_PAUSE_MENU_MODE < 2) && (gTrnsnUnkState < 2)) {
s32 ret = ShrinkWindow_GetCurrentVal();
s32 letterboxSize = Letterbox_GetSize();
if (HREG(80) == 16) {
if (HREG(95) != 16) {
@ -1481,7 +1492,7 @@ void func_80095248(GraphicsContext* gfxCtx, u8 r, u8 g, u8 b) {
}
if (HREG(81) & 1) {
HREG(83) = ret;
HREG(83) = letterboxSize;
}
if (HREG(81) & 2) {
@ -1491,7 +1502,7 @@ void func_80095248(GraphicsContext* gfxCtx, u8 r, u8 g, u8 b) {
}
if (HREG(82) & 1) {
ret = HREG(83);
letterboxSize = HREG(83);
}
if (HREG(82) & 2) {
@ -1501,27 +1512,32 @@ void func_80095248(GraphicsContext* gfxCtx, u8 r, u8 g, u8 b) {
}
}
// Set the whole z buffer to maximum depth
// Don't bother with pixels that are being covered by the letterbox
gDPSetColorImage(POLY_OPA_DISP++, G_IM_FMT_RGBA, G_IM_SIZ_16b, gScreenWidth, gZBuffer);
gDPSetCycleType(POLY_OPA_DISP++, G_CYC_FILL);
gDPSetRenderMode(POLY_OPA_DISP++, G_RM_NOOP, G_RM_NOOP2);
gDPSetFillColor(POLY_OPA_DISP++, (GPACK_ZDZ(G_MAXFBZ, 0) << 16) | GPACK_ZDZ(G_MAXFBZ, 0));
gDPFillRectangle(POLY_OPA_DISP++, 0, ret, gScreenWidth - 1, gScreenHeight - ret - 1);
gDPFillRectangle(POLY_OPA_DISP++, 0, letterboxSize, gScreenWidth - 1, gScreenHeight - letterboxSize - 1);
gDPPipeSync(POLY_OPA_DISP++);
// Fill the whole screen with the base color
// Don't bother with pixels that are being covered by the letterbox
gDPSetColorImage(POLY_OPA_DISP++, G_IM_FMT_RGBA, G_IM_SIZ_16b, gScreenWidth, gfxCtx->curFrameBuffer);
gDPSetCycleType(POLY_OPA_DISP++, G_CYC_FILL);
gDPSetRenderMode(POLY_OPA_DISP++, G_RM_NOOP, G_RM_NOOP2);
gDPSetFillColor(POLY_OPA_DISP++, (GPACK_RGBA5551(r, g, b, 1) << 16) | GPACK_RGBA5551(r, g, b, 1));
gDPFillRectangle(POLY_OPA_DISP++, 0, ret, gScreenWidth - 1, gScreenHeight - ret - 1);
gDPFillRectangle(POLY_OPA_DISP++, 0, letterboxSize, gScreenWidth - 1, gScreenHeight - letterboxSize - 1);
gDPPipeSync(POLY_OPA_DISP++);
if (ret > 0) {
// Draw the letterbox if applicable (uses the same color as the screen base)
if (letterboxSize > 0) {
gDPPipeSync(OVERLAY_DISP++);
gDPSetCycleType(OVERLAY_DISP++, G_CYC_FILL);
gDPSetRenderMode(OVERLAY_DISP++, G_RM_NOOP, G_RM_NOOP2);
gDPSetFillColor(OVERLAY_DISP++, (GPACK_RGBA5551(r, g, b, 1) << 16) | GPACK_RGBA5551(r, g, b, 1));
gDPFillRectangle(OVERLAY_DISP++, 0, 0, gScreenWidth - 1, ret - 1);
gDPFillRectangle(OVERLAY_DISP++, 0, gScreenHeight - ret, gScreenWidth - 1, gScreenHeight - 1);
gDPFillRectangle(OVERLAY_DISP++, 0, 0, gScreenWidth - 1, letterboxSize - 1);
gDPFillRectangle(OVERLAY_DISP++, 0, gScreenHeight - letterboxSize, gScreenWidth - 1, gScreenHeight - 1);
gDPPipeSync(OVERLAY_DISP++);
}
}