Added texture support.

src/engine/display/primitives/quad.c

@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "quad.h"
+
+void quadBuffer(primitive_t *primitive,
+  float x0, float y0, float u0, float v0,
+  float x1, float y1, float u1, float v1,
+  int32_t verticeStart, int32_t indiceStart
+) {
+  vertice_t *vertices = malloc(sizeof(vertice_t) * 4);
+  indice_t *indices = malloc(sizeof(indice_t) * 6);
+
+  vertices[0].x = x0, vertices[0].y = y0, vertices[0].z = 0;
+  vertices[0].u = u0, vertices[0].v = v0;
+  
+  vertices[1].x = x1, vertices[1].y = y0, vertices[1].z = 0;
+  vertices[1].u = u1, vertices[1].v = v0;
+  
+  vertices[2].x = x0, vertices[2].y = y1, vertices[2].z = 0;
+  vertices[2].u = u0, vertices[2].v = v1;
+  
+  vertices[3].x = x1, vertices[3].y = y1, vertices[3].z = 0;
+  vertices[3].u = u1, vertices[3].v = v1;
+
+  indices[0] = (indice_t)0, indices[1] = (indice_t)1, indices[2] = (indice_t)2;
+  indices[3] = (indice_t)1, indices[4] = (indice_t)2, indices[5] = (indice_t)3;
+
+  primitiveBufferVertices(primitive, verticeStart, 4, vertices);
+  primitiveBufferIndices(primitive, indiceStart, 6, indices);
+
+  free(vertices);
+  free(indices);
+}
+
+primitive_t * quadCreate(
+  float x0, float y0, float u0, float v0,
+  float x1, float y1, float u1, float v1
+) {
+  primitive_t *primitive = primitiveCreate(4, 6);
+
+  quadBuffer(primitive,
+    x0, y0, u0, v0,
+    x1, y1, u1, v1,
+    0, 0
+  );
+
+  return primitive;
+}