Initial drafts for rendering points.

src/srender.h

@@ -17,7 +17,8 @@ typedef enum {
   SRndrCmdTypeFrame = 0,
   SRndrCmdTypeGrid,
   SRndrCmdTypeCube,
-  SRndrCmdTypeSphere
+  SRndrCmdTypeSphere,
+  SrndrCmdTypePoint,
 } SRndrCmdType;
 
 typedef struct srcmd {
@@ -67,6 +68,12 @@ void srndr_render(srndr* srndr, srview* sview, srcmdbuf* scmdbuf);
 #include "utils.h"
 
 typedef struct srndr {
+  struct {
+    simd4f* pos;
+    simd4f* color;
+    GLuint num_points;
+    GLuint points_vbo_id;
+  } point_buf;
 } srndr;
 
 typedef struct srview {