More code moving

src/duskgl/display/mesh/meshgl.c

@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "display/mesh/mesh.h"
+#include "assert/assert.h"
+
+errorret_t meshInitGL(
+  meshgl_t *mesh,
+  const meshprimitivetypegl_t primitiveType,
+  const int32_t vertexCount,
+  const meshvertex_t *vertices
+) {
+  assertNotNull(mesh, "Mesh cannot be NULL");
+  assertNotNull(vertices, "Vertices cannot be NULL");
+  assertTrue(vertexCount > 0, "Vertex count must be greater than 0");
+
+  mesh->primitiveType = primitiveType;
+  mesh->vertexCount = vertexCount;
+  mesh->vertices = vertices;
+
+  errorOk();
+}
+
+errorret_t meshDrawGL(
+  const meshgl_t *mesh,
+  const int32_t offset,
+  const int32_t count
+) {
+  // PSP style pointer legacy OpenGL
+  const GLsizei stride = sizeof(meshvertex_t);
+
+  glColorPointer(
+    sizeof(color4b_t),
+    GL_UNSIGNED_BYTE,
+    stride,
+    (const GLvoid*)&mesh->vertices[offset].color
+  );
+  glTexCoordPointer(
+    MESH_VERTEX_UV_SIZE,
+    GL_FLOAT,
+    stride,
+    (const GLvoid*)&mesh->vertices[offset].uv
+  );
+  glVertexPointer(
+    MESH_VERTEX_POS_SIZE,
+    GL_FLOAT,
+    stride,
+    (const GLvoid*)&mesh->vertices[offset].pos
+  );
+
+  glDrawArrays(mesh->primitiveType, offset, count);
+
+  errorOk();
+}
+
+int32_t meshGetVertexCountGL(const meshgl_t *mesh) {
+  return mesh->vertexCount;
+}
+
+errorret_t meshDisposeGL(meshgl_t *mesh) {
+  // No dynamic resources to free for this mesh implementation
+  errorOk();
+}