Buffer:setVertex;

src/buffer.c

@@ -24,7 +24,22 @@ int lovrBufferDraw(lua_State* L) {
   return 0;
 }
 
+int lovrBufferSetVertex(lua_State* L) {
+  Buffer* buffer = luax_checkbuffer(L, 1);
+  int index = luaL_checkint(L, 2) - 1;
+  float x = luaL_checknumber(L, 3);
+  float y = luaL_checknumber(L, 4);
+  float z = luaL_checknumber(L, 5);
+
+  buffer->data[3 * index + 0] = x;
+  buffer->data[3 * index + 1] = y;
+  buffer->data[3 * index + 2] = z;
+
+  return 0;
+}
+
 const luaL_Reg lovrBuffer[] = {
   { "draw", lovrBufferDraw },
+  { "setVertex", lovrBufferSetVertex },
   { NULL, NULL }
 };

src/buffer.h

@@ -4,13 +4,13 @@
 #include "glfw.h"
 
 typedef struct {
-  GLuint vbo;
-  GLuint vao;
   GLfloat* data;
+  GLenum drawMode;
 } Buffer;
 
 void luax_pushbuffer(lua_State* L, Buffer* buffer);
 Buffer* luax_checkbuffer(lua_State* L, int index);
 
 int lovrBufferDraw(lua_State* L);
+int lovrBufferSetVertex(lua_State* L);
 extern const luaL_Reg lovrBuffer[];

src/graphics.c

@@ -44,21 +44,11 @@ int lovrGraphicsNewModel(lua_State* L) {
 }
 
 int lovrGraphicsNewBuffer(lua_State* L) {
+  int size = luaL_checkint(L, 1);
+
   Buffer* buffer = (Buffer*) malloc(sizeof(Buffer));
 
-  buffer->data = (GLfloat*) malloc(9 * sizeof(GLfloat));
-
-  buffer->data[0] = -0.5;
-  buffer->data[1] = -0.5;
-  buffer->data[2] = 0.0;
-
-  buffer->data[3] = 0.5;
-  buffer->data[4] = -0.5;
-  buffer->data[5] = 0.0;
-
-  buffer->data[6] = 0.0;
-  buffer->data[7] = 0.5;
-  buffer->data[8] = 0.0;
+  buffer->data = (GLfloat*) malloc(size * 3 * sizeof(GLfloat));
 
   luax_pushbuffer(L, buffer);