From ed2a4bc4400c38ecd11baccac5db328b797b5d68 Mon Sep 17 00:00:00 2001
From: pk33 <pk33@pk33.space>
Date: Thu, 14 Nov 2024 15:06:07 +0100
Subject: begin 3D rendering, basic camera controls

---
 include/graphics33.h | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 include/graphics33.h

(limited to 'include/graphics33.h')

diff --git a/include/graphics33.h b/include/graphics33.h
new file mode 100644
index 0000000..af7de8e
--- /dev/null
+++ b/include/graphics33.h
@@ -0,0 +1,67 @@
+#ifndef __GRAPHICS33_H__
+#define __GRAPHICS33_H__
+
+
+#include "math33.h"
+
+
+typedef struct Surface33 {
+  u32 *data;
+  Size w, h;
+} Surface33;
+
+typedef struct ModelEdge33 {
+  Size vertices[2];
+  Size cacheOffset;
+} ModelEdge33;
+
+typedef struct Model33 {
+  Vec4 *vertices;
+  ModelEdge33 *medges;
+  Size *sedges;
+
+  Vec3 t;
+  Vec3 r;
+  Vec3 s;
+
+  Size vertexCount;
+  Size edgeCount;
+  Size surfaceCount;
+} Model33;
+
+
+Error graphics33_init( void );
+Error graphics33_term( void );
+void graphics33_update( void );
+
+
+
+#define GFX33_QUAD_VERTEX_COUNT 4
+
+#define GFX33_QUAD_VERTICES {\
+  { -1.0, -1.0,  0.0, 1.0 },\
+  { -1.0,  1.0,  0.0, 1.0 },\
+  {  1.0,  1.0,  0.0, 1.0 },\
+  {  1.0, -1.0,  0.0, 1.0 }\
+}
+
+
+#define GFX33_QUAD_EDGE_COUNT 5
+
+#define GFX33_QUAD_MEDGES {\
+  { {0,1}, 0 },\
+  { {1,2}, 0 },\
+  { {2,3}, 0 },\
+  { {0,3}, 0 },\
+  { {1,3}, 0 }\
+}
+
+#define GFX33_QUAD_SFACE_COUNT 2
+#define GFX33_QUAD_SEDGE_COUNT (GFX33_QUAD_SFACE_COUNT * 3)
+
+#define GFX33_QUAD_SEDGES {\
+  0, 4, 3, 1, 2, 4\
+}
+
+
+#endif /** GFX33_H **/
-- 
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