From 07fb91b9571fc0add797cbcd0adcc8711401a2be Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 27 Dec 2025 12:00:21 -0800
Subject: Enough stuff to draw a cube

---
 include/swgfx.h | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'include/swgfx.h')

diff --git a/include/swgfx.h b/include/swgfx.h
index b6dc769..94eb359 100644
--- a/include/swgfx.h
+++ b/include/swgfx.h
@@ -1,7 +1,7 @@
 /*
 Software rendering library.
 
-Cooridnate systems:
+Coordinate systems:
 - Pixel coordinates (i,j) refer to the center of the pixel.
   Thus, real-valued coordinates (x,y) with no fractional part point at the pixel center.
 - Viewport origin is the top-left corner of the screen.
@@ -30,6 +30,10 @@ typedef struct sgQuad  { sgVec2  p0, p1; }     sgQuad;
 typedef struct sgTri2  { sgVec2  p0, p1, p2; } sgTri2;
 typedef struct sgTri3  { sgVec3  p0, p1, p2; } sgTri3;
 
+typedef uint16_t sgIdx;
+typedef struct   sgVert   { sgIdx position, normal, texcoord; } sgVert;
+typedef struct   sgTriIdx { sgVert v0, v1, v2; } sgTriIdx;
+
 // TODO: Should we use real-valued colours?
 typedef struct sgPixel { uint8_t r, g, b, a; } sgPixel;
 
@@ -43,7 +47,9 @@ void   sgDel(swgfx**);
 void sgColourBuffer(swgfx*, sgVec2i dimensions, sgPixel* buffer);
 void sgPresent     (swgfx*, sgVec2i dimensions, sgPixel* screen);
 
-void sgCam        (swgfx*, sgVec3 position, sgVec3 forward);
+void sgModelId    (swgfx*);
+void sgModel      (swgfx*, sgVec3 position, sgVec3 right, sgVec3 up, sgVec3 forward);
+void sgView       (swgfx*, sgVec3 position, sgVec3 forward);
 void sgOrtho      (swgfx*, R left, R right, R top, R bottom, R near, R far);
 void sgPerspective(swgfx*, R fovy, R aspect, R near, R far);
 void sgViewport   (swgfx*, int x0, int y0, int width, int height);
@@ -56,6 +62,8 @@ void sgTriangles2    (swgfx*, size_t count, const sgTri2*);
 void sgTriangleStrip2(swgfx*, size_t count, const sgVec2*);
 void sgTriangles     (swgfx*, size_t count, const sgTri3*, const sgNormal*);
 void sgTriangleStrip (swgfx*, size_t count, const sgVec3*, const sgNormal*);
+void sgTrianglesIndexed(swgfx*, size_t numIndices, const sgIdx* indices, const sgVec3* positions);
+void sgTrianglesIndexedNonUniform(swgfx*, size_t numTris, const sgTriIdx* tris, const sgVec3* positions);
 
 void sgCheck(swgfx*);
 
-- 
cgit v1.2.3