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
|
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gl/GrGLUniformHandler.h"
#include "gl/GrGLCaps.h"
#include "gl/GrGLGpu.h"
#include "gl/builders/GrGLProgramBuilder.h"
#include "SkSLCompiler.h"
#define GL_CALL(X) GR_GL_CALL(this->glGpu()->glInterface(), X)
#define GL_CALL_RET(R, X) GR_GL_CALL_RET(this->glGpu()->glInterface(), R, X)
bool valid_name(const char* name) {
// disallow unknown names that start with "sk_"
if (!strncmp(name, GR_NO_MANGLE_PREFIX, strlen(GR_NO_MANGLE_PREFIX))) {
return !strcmp(name, SkSL::Compiler::RTADJUST_NAME);
}
return true;
}
GrGLSLUniformHandler::UniformHandle GrGLUniformHandler::internalAddUniformArray(
uint32_t visibility,
GrSLType type,
GrSLPrecision precision,
const char* name,
bool mangleName,
int arrayCount,
const char** outName) {
SkASSERT(name && strlen(name));
SkASSERT(valid_name(name));
SkASSERT(0 != visibility);
SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeTemporarilyAcceptsPrecision(type));
UniformInfo& uni = fUniforms.push_back();
uni.fVariable.setType(type);
uni.fVariable.setTypeModifier(GrShaderVar::kUniform_TypeModifier);
// TODO this is a bit hacky, lets think of a better way. Basically we need to be able to use
// the uniform view matrix name in the GP, and the GP is immutable so it has to tell the PB
// exactly what name it wants to use for the uniform view matrix. If we prefix anythings, then
// the names will mismatch. I think the correct solution is to have all GPs which need the
// uniform view matrix, they should upload the view matrix in their setData along with regular
// uniforms.
char prefix = 'u';
if ('u' == name[0] || !strncmp(name, GR_NO_MANGLE_PREFIX, strlen(GR_NO_MANGLE_PREFIX))) {
prefix = '\0';
}
fProgramBuilder->nameVariable(uni.fVariable.accessName(), prefix, name, mangleName);
uni.fVariable.setArrayCount(arrayCount);
uni.fVisibility = visibility;
uni.fVariable.setPrecision(precision);
uni.fLocation = -1;
if (outName) {
*outName = uni.fVariable.c_str();
}
return GrGLSLUniformHandler::UniformHandle(fUniforms.count() - 1);
}
GrGLSLUniformHandler::SamplerHandle GrGLUniformHandler::addSampler(uint32_t visibility,
GrSwizzle swizzle,
GrTextureType type,
GrSLPrecision precision,
const char* name) {
SkASSERT(name && strlen(name));
SkASSERT(0 != visibility);
SkString mangleName;
char prefix = 'u';
fProgramBuilder->nameVariable(&mangleName, prefix, name, true);
UniformInfo& sampler = fSamplers.push_back();
sampler.fVariable.setType(GrSLCombinedSamplerTypeForTextureType(type));
sampler.fVariable.setTypeModifier(GrShaderVar::kUniform_TypeModifier);
sampler.fVariable.setPrecision(precision);
sampler.fVariable.setName(mangleName);
sampler.fLocation = -1;
sampler.fVisibility = visibility;
fSamplerSwizzles.push_back(swizzle);
SkASSERT(fSamplers.count() == fSamplerSwizzles.count());
return GrGLSLUniformHandler::SamplerHandle(fSamplers.count() - 1);
}
void GrGLUniformHandler::appendUniformDecls(GrShaderFlags visibility, SkString* out) const {
for (int i = 0; i < fUniforms.count(); ++i) {
if (fUniforms[i].fVisibility & visibility) {
fUniforms[i].fVariable.appendDecl(fProgramBuilder->shaderCaps(), out);
out->append(";");
}
}
for (int i = 0; i < fSamplers.count(); ++i) {
if (fSamplers[i].fVisibility & visibility) {
fSamplers[i].fVariable.appendDecl(fProgramBuilder->shaderCaps(), out);
out->append(";\n");
}
}
}
void GrGLUniformHandler::bindUniformLocations(GrGLuint programID, const GrGLCaps& caps) {
if (caps.bindUniformLocationSupport()) {
int currUniform = 0;
for (int i = 0; i < fUniforms.count(); ++i, ++currUniform) {
GL_CALL(BindUniformLocation(programID, currUniform, fUniforms[i].fVariable.c_str()));
fUniforms[i].fLocation = currUniform;
}
for (int i = 0; i < fSamplers.count(); ++i, ++currUniform) {
GL_CALL(BindUniformLocation(programID, currUniform, fSamplers[i].fVariable.c_str()));
fSamplers[i].fLocation = currUniform;
}
}
}
void GrGLUniformHandler::getUniformLocations(GrGLuint programID, const GrGLCaps& caps) {
if (!caps.bindUniformLocationSupport()) {
int count = fUniforms.count();
for (int i = 0; i < count; ++i) {
GrGLint location;
GL_CALL_RET(location, GetUniformLocation(programID, fUniforms[i].fVariable.c_str()));
fUniforms[i].fLocation = location;
}
for (int i = 0; i < fSamplers.count(); ++i) {
GrGLint location;
GL_CALL_RET(location, GetUniformLocation(programID, fSamplers[i].fVariable.c_str()));
fSamplers[i].fLocation = location;
}
}
}
const GrGLGpu* GrGLUniformHandler::glGpu() const {
GrGLProgramBuilder* glPB = (GrGLProgramBuilder*) fProgramBuilder;
return glPB->gpu();
}
|
