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
|
/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "SkyBox.h"
#include "Rendering/GlobalRendering.h"
#include "Rendering/GL/myGL.h"
#include "Rendering/Textures/Bitmap.h"
#include "Game/Camera.h"
#include "Map/MapInfo.h"
#include "Map/ReadMap.h"
#include "System/Exceptions.h"
#include "System/float3.h"
#include "System/Log/ILog.h"
#define LOG_SECTION_SKY_BOX "SkyBox"
LOG_REGISTER_SECTION_GLOBAL(LOG_SECTION_SKY_BOX)
// use the specific section for all LOG*() calls in this source file
#ifdef LOG_SECTION_CURRENT
#undef LOG_SECTION_CURRENT
#endif
#define LOG_SECTION_CURRENT LOG_SECTION_SKY_BOX
CSkyBox::CSkyBox(const std::string& texture)
{
#ifndef HEADLESS
CBitmap btex;
if (!btex.Load(texture) || btex.textype != GL_TEXTURE_CUBE_MAP) {
LOG_L(L_WARNING, "could not load skybox texture from file %s", texture.c_str());
} else {
skyTex.SetRawTexID(btex.CreateTexture());
skyTex.SetRawSize(int2(btex.xsize, btex.ysize));
glBindTexture(GL_TEXTURE_CUBE_MAP, skyTex.GetID());
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
#endif
globalRendering->drawFog = (fogStart <= 0.99f);
}
CSkyBox::~CSkyBox()
{
}
void CSkyBox::Draw()
{
if (!globalRendering->drawSky)
return;
glColor3f(1,1,1);
glDisable(GL_FOG);
glDisable(GL_BLEND);
glDepthMask(0);
glDisable(GL_DEPTH_TEST);
glDisable(GL_ALPHA_TEST);
glEnable(GL_TEXTURE_CUBE_MAP);
glBindTexture(GL_TEXTURE_CUBE_MAP, skyTex.GetID());
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluOrtho2D(0, 1, 0, 1);
GLfloat verts[] = {
0.0f, 1.0f,
1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f
};
float3 texcoords[] = {
-camera->CalcPixelDir( 0, 0),
-camera->CalcPixelDir(globalRendering->viewSizeX, 0),
-camera->CalcPixelDir(globalRendering->viewSizeX, globalRendering->viewSizeY),
-camera->CalcPixelDir( 0, globalRendering->viewSizeY)
};
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(3, GL_FLOAT, 0, texcoords);
glVertexPointer(2, GL_FLOAT, 0, verts);
glDrawArrays(GL_QUADS, 0, 4);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
// glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glDisable(GL_TEXTURE_CUBE_MAP_ARB);
glDepthMask(1);
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
sky->SetupFog();
}
|
