idk

2026-03-06 16:34:45 -06:00
parent 9139c4350a
commit 93074d653e
27 changed files with 122 additions and 61 deletions
--- a/archive/platform/dolphin.c
+++ b/archive/platform/dolphin.c
@@ -0,0 +1,92 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "dolphin.h"
+
+void displayInitDolphin(void) {
+  VIDEO_Init();
+  DISPLAY.screenMode = VIDEO_GetPreferredMode(NULL);
+  DISPLAY.frameBuffer[0] = MEM_K0_TO_K1(
+    SYS_AllocateFramebuffer(DISPLAY.screenMode)
+  );
+  DISPLAY.frameBuffer[1] = MEM_K0_TO_K1(
+    SYS_AllocateFramebuffer(DISPLAY.screenMode)
+  );
+  VIDEO_Configure(DISPLAY.screenMode);
+
+  VIDEO_SetNextFramebuffer(DISPLAY.frameBuffer[DISPLAY.whichFrameBuffer]);
+  // VIDEO_SetPostRetraceCallback(copy_buffers);
+  VIDEO_SetBlack(FALSE);
+  VIDEO_Flush();
+  VIDEO_WaitVSync();
+  if(DISPLAY.screenMode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync();
+
+  DISPLAY.fifoBuffer = memalign(32, DISPLAY_FIFO_SIZE);
+  memoryZero(DISPLAY.fifoBuffer, DISPLAY_FIFO_SIZE);
+
+  GX_Init(DISPLAY.fifoBuffer, DISPLAY_FIFO_SIZE);
+
+  // This seems to be mostly related to interlacing vs progressive
+  GX_SetViewport(
+    0, 0,
+    DISPLAY.screenMode->fbWidth, DISPLAY.screenMode->efbHeight,
+    0, 1
+  );
+  float_t yscale = GX_GetYScaleFactor(
+    DISPLAY.screenMode->efbHeight, DISPLAY.screenMode->xfbHeight
+  );
+  uint32_t xfbHeight = GX_SetDispCopyYScale(yscale);
+  GX_SetScissor(
+    0, 0,
+    DISPLAY.screenMode->fbWidth, DISPLAY.screenMode->efbHeight
+  );
+  GX_SetDispCopySrc(
+    0, 0,
+    DISPLAY.screenMode->fbWidth, DISPLAY.screenMode->efbHeight
+  );
+  GX_SetDispCopyDst(DISPLAY.screenMode->fbWidth, xfbHeight);
+  GX_SetCopyFilter(
+    DISPLAY.screenMode->aa,
+    DISPLAY.screenMode->sample_pattern,
+    GX_TRUE,
+    DISPLAY.screenMode->vfilter
+  );
+  GX_SetFieldMode(
+    DISPLAY.screenMode->field_rendering,
+    (
+      (DISPLAY.screenMode->viHeight == 2 * DISPLAY.screenMode->xfbHeight) ?
+      GX_ENABLE :
+      GX_DISABLE
+    )
+  );
+
+  // Setup cull modes
+  GX_SetCullMode(GX_CULL_NONE);
+  GX_SetZMode(GX_FALSE, GX_ALWAYS, GX_FALSE);
+  GX_CopyDisp(DISPLAY.frameBuffer[DISPLAY.whichFrameBuffer], GX_TRUE);
+  GX_SetDispCopyGamma(GX_GM_1_0);
+
+  GX_ClearVtxDesc();
+  GX_SetVtxDesc(GX_VA_POS,  GX_INDEX16);
+  GX_SetVtxDesc(GX_VA_CLR0, GX_INDEX16);
+  GX_SetVtxDesc(GX_VA_TEX0, GX_INDEX16);
+  GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_F32, 0);
+  GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_U8, 0);
+  GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
+}
+
+void displayDolphinSwap(void) {
+  GX_DrawDone();
+
+  DISPLAY.whichFrameBuffer ^= 1;
+  GX_SetZMode(GX_TRUE, GX_LEQUAL, GX_TRUE);
+  GX_SetColorUpdate(GX_TRUE);
+  GX_CopyDisp(DISPLAY.frameBuffer[DISPLAY.whichFrameBuffer], GX_TRUE);
+  VIDEO_SetNextFramebuffer(DISPLAY.frameBuffer[DISPLAY.whichFrameBuffer]);
+  VIDEO_Flush();
+  VIDEO_WaitVSync();
+}