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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
#include "UnityPrefix.h"
#include "CombinerGL.h"
#include "Runtime/Shaders/GraphicsCaps.h"
#include "UnityGL.h"
#include "GLAssert.h"
#include "External/shaderlab/Library/pass.h"
#include "External/shaderlab/Library/texenv.h"
#include "External/shaderlab/Library/TextureBinding.h"
#include "Runtime/GfxDevice/GfxDeviceTypes.h"
static const unsigned int kCombinerFuncTable[] = {
GL_REPLACE, GL_MODULATE, GL_ADD, GL_ADD_SIGNED_ARB, GL_SUBTRACT_ARB, GL_INTERPOLATE_ARB, GL_DOT3_RGB_ARB, GL_DOT3_RGBA_ARB
};
static const unsigned int kCombinerBlendFuncTableATI[4] = {
GL_INTERPOLATE_ARB, GL_MODULATE_ADD_ATI, GL_MODULATE_SIGNED_ADD_ATI, GL_MODULATE_SUBTRACT_ATI
};
static const unsigned int kCombinerBlendFuncTableNV[4] = {
GL_INTERPOLATE_ARB, GL_ADD, GL_ADD_SIGNED_EXT, 0
};
static const unsigned int kCombinerSourceTable[4] = {
GL_PREVIOUS_ARB, GL_TEXTURE, GL_CONSTANT_ARB, GL_PRIMARY_COLOR_ARB
};
static const unsigned int kCombinerOperandTable[4] = {
GL_SRC_COLOR, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_COLOR, GL_ONE_MINUS_SRC_ALPHA
};
bool TextureCombinersGL::IsCombineModeSupported( unsigned int combiner )
{
int cf = COMBINER_GET_FUNC(combiner);
if( cf & combiner::kBlendFuncMask )
{
int blendF = COMBINER_GET_BLEND_FUNC_INDEX(cf);
if( blendF != 0 ) // anything other than GL_INTERPOLATE_ARB requires extension
{
if( gGraphicsCaps.gl.hasTextureEnvCombine3ATI )
return true;
if( gGraphicsCaps.gl.hasTextureEnvCombine3NV && blendF != 3 ) // NV fallback can't do a*b-c
return true;
return false;
}
}
return true;
}
void ApplyCombinerGL( unsigned int& currentCombColor, unsigned int& currentCombAlpha, unsigned int combcolor, unsigned int combalpha )
{
// only change combiner color setup if different from the cached version.
if( currentCombColor != combcolor )
{
// Handle RGB
int s0 = (combcolor >> combiner::kSrcZeroShift) & 0xFF;
int cf = COMBINER_GET_FUNC(combcolor);
int s1 = (combcolor) & 0xFF;
GLint source0 = kCombinerSourceTable[s0 & combiner::kSourceMask];
GLint oper0 = kCombinerOperandTable[s0 >> combiner::kOperandShift];
GLint source1 = kCombinerSourceTable[s1 & combiner::kSourceMask];
GLint oper1 = kCombinerOperandTable[s1 >> combiner::kOperandShift];
OGL_CALL(glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB));
if( !(cf & combiner::kBlendFuncMask) )
{
OGL_CALL(glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, kCombinerFuncTable[cf]));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, source0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, oper0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, source1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, oper1 ));
}
else
{
int blendF = COMBINER_GET_BLEND_FUNC_INDEX(cf);
int src2 = cf & combiner::kSourceMask;
int oper2 = ((cf & combiner::kOperandTwo) >> combiner::kOperandShift) | 1;
if( blendF == 0 || gGraphicsCaps.gl.hasTextureEnvCombine3ATI )
{
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, source0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, oper0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, source1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, oper1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, kCombinerBlendFuncTableATI[blendF] ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, kCombinerSourceTable[src2] ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, kCombinerOperandTable[oper2] ));
}
else
{
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV ));
// TNT combiners use a different argument order than ARB/ATI combiners...
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, source0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, oper0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, source1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, oper1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, kCombinerBlendFuncTableNV[blendF] ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, kCombinerSourceTable[src2] ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, kCombinerOperandTable[oper2] ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE3_RGB_NV, GL_ZERO ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND3_RGB_NV, GL_ONE_MINUS_SRC_COLOR ));
}
}
OGL_CALL(glTexEnvf( GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (combcolor >> combiner::kScaleShift) ));
currentCombColor = combcolor;
}
// only change combiner alpha setup if different from the cached version.
if( currentCombAlpha != combalpha )
{
// Handle alpha
int s0 = (combalpha >> combiner::kSrcZeroShift) & 0xFF;
int cf = COMBINER_GET_FUNC(combalpha);
int s1 = (combalpha) & 0xFF;
if ((cf & 7) == 6) // dot3 combiner doesn't touch alpha, so use just source0
cf = 0;
GLint source0 = kCombinerSourceTable[s0 & combiner::kSourceMask];
GLint oper0 = kCombinerOperandTable[(s0 >> combiner::kOperandShift)|1];
GLint source1 = kCombinerSourceTable[s1 & combiner::kSourceMask];
GLint oper1 = kCombinerOperandTable[(s1 >> combiner::kOperandShift)|1];
if (!(cf & combiner::kBlendFuncMask))
{
OGL_CALL(glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, kCombinerFuncTable[cf]));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, source0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, oper0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, source1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, oper1 ));
}
else
{
int blendF = COMBINER_GET_BLEND_FUNC_INDEX(cf);
int src2 = cf & combiner::kSourceMask;
int oper2 = ((cf & combiner::kOperandTwo) >> combiner::kOperandShift) | 1;
if( blendF == 0 || gGraphicsCaps.gl.hasTextureEnvCombine3ATI )
{
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, source0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, oper0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, source1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, oper1 ));
OGL_CALL(glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, kCombinerBlendFuncTableATI[blendF]));
OGL_CALL(glTexEnvi (GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, kCombinerSourceTable[src2]));
OGL_CALL(glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, kCombinerOperandTable[oper2]));
}
else
{
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE4_NV ));
// TNT combiners use a different argument order than ARB/ATI combiners...
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, source0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, oper0 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, source1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, oper1 ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, kCombinerBlendFuncTableNV[blendF] ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, kCombinerSourceTable[src2] ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, kCombinerOperandTable[oper2] ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE3_ALPHA_NV, GL_ZERO ));
OGL_CALL(glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND3_ALPHA_NV, GL_ONE_MINUS_SRC_ALPHA ));
}
}
OGL_CALL(glTexEnvf( GL_TEXTURE_ENV, GL_ALPHA_SCALE, (combalpha >> combiner::kScaleShift)));
currentCombAlpha = combalpha;
}
GLAssert();
}
TextureCombinersGL* TextureCombinersGL::Create( int count, const ShaderLab::TextureBinding* texEnvs, const ShaderLab::PropertySheet* props )
{
// check if supported
if( count > gGraphicsCaps.maxTexUnits )
return NULL;
// TODO: move this to client thread for threaded rendering
for( int i = 0; i < count; ++i )
if( !IsCombineModeSupported( texEnvs[i].m_CombColor ) )
return NULL;
// For threaded rendering this check is done on the client side (and we get NULL here)
if( props ) {
for( int i = 0; i < count; ++i ) {
TextureDimension texDim;
TexGenMode texGen;
GetTexEnvInfoFromName( texEnvs[i].m_TextureName, texDim, texGen, props );
if( !ShaderLab::IsTexEnvSupported( texEnvs[i].m_TextureName, texDim, texGen ) )
return NULL;
}
}
// create
TextureCombinersGL* combiners = new TextureCombinersGL();
combiners->count = count;
combiners->texEnvs = texEnvs;
return combiners;
}
|
