1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*******************************************************************************************
*
* raylib [shaders] example - Simple shader mask
*
* This example has been created using raylib 2.5 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Example contributed by Chris Camacho (@chriscamacho) and reviewed by Ramon Santamaria (@raysan5)
*
* Copyright (c) 2019 Chris Camacho (@chriscamacho) and Ramon Santamaria (@raysan5)
*
********************************************************************************************
*
* After a model is loaded it has a default material, this material can be
* modified in place rather than creating one from scratch...
* While all of the maps have particular names, they can be used for any purpose
* except for three maps that are applied as cubic maps (see below)
*
********************************************************************************************/
#include "raylib.h"
#include "raymath.h"
#if defined(PLATFORM_DESKTOP)
#define GLSL_VERSION 330
#else // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
#define GLSL_VERSION 100
#endif
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib - simple shader mask");
// Define the camera to look into our 3d world
Camera camera = { 0 };
camera.position = (Vector3){ 0.0f, 1.0f, 2.0f };
camera.target = (Vector3){ 0.0f, 0.0f, 0.0f };
camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };
camera.fovy = 45.0f;
camera.projection = CAMERA_PERSPECTIVE;
// Define our three models to show the shader on
Mesh torus = GenMeshTorus(0.3f, 1, 16, 32);
Model model1 = LoadModelFromMesh(torus);
Mesh cube = GenMeshCube(0.8f,0.8f,0.8f);
Model model2 = LoadModelFromMesh(cube);
// Generate model to be shaded just to see the gaps in the other two
Mesh sphere = GenMeshSphere(1, 16, 16);
Model model3 = LoadModelFromMesh(sphere);
// Load the shader
Shader shader = LoadShader(0, TextFormat("resources/shaders/glsl%i/mask.fs", GLSL_VERSION));
// Load and apply the diffuse texture (colour map)
Texture texDiffuse = LoadTexture("resources/plasma.png");
model1.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texDiffuse;
model2.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texDiffuse;
// Using MATERIAL_MAP_EMISSION as a spare slot to use for 2nd texture
// NOTE: Don't use MATERIAL_MAP_IRRADIANCE, MATERIAL_MAP_PREFILTER or MATERIAL_MAP_CUBEMAP as they are bound as cube maps
Texture texMask = LoadTexture("resources/mask.png");
model1.materials[0].maps[MATERIAL_MAP_EMISSION].texture = texMask;
model2.materials[0].maps[MATERIAL_MAP_EMISSION].texture = texMask;
shader.locs[SHADER_LOC_MAP_EMISSION] = GetShaderLocation(shader, "mask");
// Frame is incremented each frame to animate the shader
int shaderFrame = GetShaderLocation(shader, "frame");
// Apply the shader to the two models
model1.materials[0].shader = shader;
model2.materials[0].shader = shader;
int framesCounter = 0;
Vector3 rotation = { 0 }; // Model rotation angles
SetTargetFPS(60); // Set to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
framesCounter++;
rotation.x += 0.01f;
rotation.y += 0.005f;
rotation.z -= 0.0025f;
// Send frames counter to shader for animation
SetShaderValue(shader, shaderFrame, &framesCounter, SHADER_UNIFORM_INT);
// Rotate one of the models
model1.transform = MatrixRotateXYZ(rotation);
UpdateCamera(&camera);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(DARKBLUE);
BeginMode3D(camera);
DrawModel(model1, (Vector3){0.5,0,0}, 1, WHITE);
DrawModelEx(model2, (Vector3){-.5,0,0}, (Vector3){1,1,0}, 50, (Vector3){1,1,1}, WHITE);
DrawModel(model3,(Vector3){0,0,-1.5}, 1, WHITE);
DrawGrid(10, 1.0f); // Draw a grid
EndMode3D();
DrawRectangle(16, 698, MeasureText(TextFormat("Frame: %i", framesCounter), 20) + 8, 42, BLUE);
DrawText(TextFormat("Frame: %i", framesCounter), 20, 700, 20, WHITE);
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadModel(model1);
UnloadModel(model2);
UnloadModel(model3);
UnloadTexture(texDiffuse); // Unload default diffuse texture
UnloadTexture(texMask); // Unload texture mask
UnloadShader(shader); // Unload shader
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
|
