engine.render source code

1 /*
2     Rendering Subsystem
3 
4     Copyright © 2020, Luna Nielsen
5     Distributed under the 2-Clause BSD License, see LICENSE file.
6     
7     Authors: Luna Nielsen
8 */
9 module engine.render;
10 public import bindbc.opengl;
11 public import engine.render.shader;
12 public import engine.render.tile;
13 public import engine.render.texture;
14 public import engine.render.batcher;
15 public import engine.render.fbo;
16 
17 void initRender() {
18     
19     // OpenGL prep stuff
20     glEnable(GL_BLEND);
21     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
22     
23     glEnable(GL_CULL_FACE);
24     glEnable(GL_DEPTH_TEST);
25     glDepthFunc(GL_LESS);
26 
27     GameBatch = new SpriteBatch();
28 }
29 
30 private int viewportX;
31 private int viewportY;
32 private int viewportW;
33 private int viewportH;
34 
35 /**
36     Sets the viewport
37 */
38 void kmViewport(int x, int y, int width, int height) {
39     import engine.math.camera : kmSetCameraTargetSize;
40 
41     viewportX = x;
42     viewportY = y;
43     viewportW = width;
44     viewportH = height;
45     glViewport(x, y, width, height);
46     kmSetCameraTargetSize(width, height);
47 }
48 
49 /**
50     Returns the viewport X
51 */
52 int kmViewportX() {
53     return viewportX;
54 }
55 
56 /**
57     Returns the viewport Y
58 */
59 int kmViewportY() {
60     return viewportY;
61 }
62 
63 /**
64     Returns the viewport width
65 */
66 int kmViewportWidth() {
67     return viewportW;
68 }
69 
70 /**
71     Returns the viewport height
72 */
73 int kmViewportHeight() {
74     return viewportH;
75 }