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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
|
#include "ShaderProgram.h"
#include "../client/human/GGHumanClientApp.h"
#include "../util/Logger.h"
namespace {
void CHECK_ERROR(const char* fn, const char* e) {
GLenum error = glGetError();
if (error != GL_NO_ERROR) {
const char* error_msg = "";
switch(error) {
case GL_INVALID_ENUM: error_msg = "invalid enumerant"; break;
case GL_INVALID_VALUE: error_msg = "invalid value"; break;
case GL_INVALID_OPERATION: error_msg = "invalid operation"; break;
}
ErrorLogger() << fn << " () :"
<< " GL error on " << e << ": "
<< "'" << error_msg << "'";
}
}
void GetShaderLog(GLuint shader, std::string& log) {
log.clear();
GLint logSize;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &logSize);
CHECK_ERROR("GetShaderLog", "glGetShaderiv(GL_INFO_LOG_LENGTH)");
if (0 < logSize) {
log.resize(logSize, '\0');
GLsizei chars;
glGetShaderInfoLog(shader, logSize, &chars, log.data());
CHECK_ERROR("GetShaderLog", "glGetShaderInfoLog()");
}
}
void GetProgramLog(GLuint program, std::string& log) {
log.clear();
GLint logSize;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &logSize);
CHECK_ERROR("GetProgramLog", "glGetProgramiv(GL_INFO_LOG_LENGTH)");
if (0 < logSize) {
log.resize(logSize, '\0');
GLsizei chars;
glGetProgramInfoLog(program, logSize, &chars, log.data());
CHECK_ERROR("GetProgramLog", "glGetProgramInfoLog()");
}
}
}
ShaderProgram::ShaderProgram(const std::string& vertex_shader, const std::string& fragment_shader) :
m_program_id(0),
m_vertex_shader_id(0),
m_fragment_shader_id(0),
m_link_succeeded(false),
m_program_log(),
m_program_validity_log(),
m_vertex_shader_log(),
m_fragment_shader_log()
{
glGetError();
m_program_id = glCreateProgram();
const char* strings[1] = { nullptr };
if (!vertex_shader.empty()) {
m_vertex_shader_id = glCreateShader(GL_VERTEX_SHADER);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glCreateShader(GL_VERTEX_SHADER)");
strings[0] = vertex_shader.c_str();
glShaderSource(m_vertex_shader_id, 1, strings, nullptr);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glShaderSource(vertex_shader)");
glCompileShader(m_vertex_shader_id);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glCompileShader(m_vertex_shader_id)");
GetShaderLog(m_vertex_shader_id, m_vertex_shader_log);
glAttachShader(m_program_id, m_vertex_shader_id);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glAttachShader(m_vertex_shader_id)");
}
if (!fragment_shader.empty()) {
m_fragment_shader_id = glCreateShader(GL_FRAGMENT_SHADER);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glCreateShader(GL_FRAGMENT_SHADER)");
strings[0] = fragment_shader.c_str();
glShaderSource(m_fragment_shader_id, 1, strings, nullptr);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glShaderSource(fragment_shader)");
glCompileShader(m_fragment_shader_id);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glCompileShader(m_fragment_shader_id)");
GetShaderLog(m_fragment_shader_id, m_fragment_shader_log);
glAttachShader(m_program_id, m_fragment_shader_id);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glAttachShader(m_fragment_shader_id)");
}
GLint status;
glLinkProgram(m_program_id);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glLinkProgram()");
glGetProgramiv(m_program_id, GL_LINK_STATUS, &status);
CHECK_ERROR("ShaderProgram::ShaderProgram", "glGetProgramiv(GL_LINK_STATUS)");
m_link_succeeded = status;
GetProgramLog(m_program_id, m_program_log);
}
std::unique_ptr<ShaderProgram> ShaderProgram::shaderProgramFactory(const std::string& vertex_shader,
const std::string& fragment_shader)
{
if (GGHumanClientApp::GetApp()->GLVersion() >= 2.0f)
return std::make_unique<ShaderProgram>(vertex_shader,fragment_shader);
return nullptr;
}
ShaderProgram::~ShaderProgram() {
glGetError();
if (glIsShader(m_vertex_shader_id)) {
glDeleteShader(m_vertex_shader_id);
CHECK_ERROR("ShaderProgram::~ShaderProgram", "glDeleteShader(m_vertex_shader_id)");
}
if (glIsShader(m_fragment_shader_id)) {
glDeleteShader(m_fragment_shader_id);
CHECK_ERROR("ShaderProgram::~ShaderProgram", "glDeleteShader(m_fragment_shader_id)");
}
if (glIsProgram(m_program_id)) {
glDeleteProgram(m_program_id);
CHECK_ERROR("ShaderProgram::~ShaderProgram", "glDeleteProgram()");
}
}
GLuint ShaderProgram::ProgramID() const
{ return m_program_id; }
bool ShaderProgram::LinkSucceeded() const
{ return m_link_succeeded; }
const std::string& ShaderProgram::ProgramInfoLog() const
{ return m_program_log; }
const std::string& ShaderProgram::ProgramValidityInfoLog() const
{ return m_program_validity_log; }
const std::string& ShaderProgram::VertexShaderInfoLog() const
{ return m_vertex_shader_log; }
const std::string& ShaderProgram::FragmentShaderInfoLog() const
{ return m_fragment_shader_log; }
void ShaderProgram::Bind(const std::string& name, float f) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::Bind", "glGetUniformLocation()");
assert(location != -1 &&
"Bind() : The named uniform variable does not exist.");
glUniform1f(location, f);
CHECK_ERROR("ShaderProgram::Bind", "glUniform1f()");
}
void ShaderProgram::Bind(const std::string& name, float f0, float f1) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::Bind", "glGetUniformLocation()");
assert(location != -1 &&
"Bind() : The named uniform variable does not exist.");
glUniform2f(location, f0, f1);
CHECK_ERROR("ShaderProgram::Bind", "glUniform2f()");
}
void ShaderProgram::Bind(const std::string& name, float f0, float f1, float f2) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::Bind", "glGetUniformLocation()");
assert(location != -1 &&
"Bind() : The named uniform variable does not exist.");
glUniform3f(location, f0, f1, f2);
CHECK_ERROR("ShaderProgram::Bind", "glUniform3f()");
}
void ShaderProgram::Bind(const std::string& name, float f0, float f1, float f2, float f3) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::Bind", "glGetUniformLocation()");
assert(location != -1 &&
"Bind() : The named uniform variable does not exist.");
glUniform4f(location, f0, f1, f2, f3);
CHECK_ERROR("ShaderProgram::Bind", "glUniform4f()");
}
void ShaderProgram::Bind(const std::string& name, std::size_t element_size, const std::vector<float> &floats) {
assert(1 <= element_size && element_size <= 4);
assert((floats.size() % element_size) == 0);
std::function<void (GLint, GLsizei, const GLfloat*)> functions[] =
{ glUniform1fv,
glUniform2fv,
glUniform3fv,
glUniform4fv
};
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::Bind", "glGetUniformLocation()");
assert(location != -1 &&
"Bind() : The named uniform variable does not exist.");
functions[element_size - 1](location, floats.size() / element_size, floats.data());
CHECK_ERROR("ShaderProgram::Bind", "glUniformNfv()");
}
void ShaderProgram::Bind(const std::string& name, GLuint texture_id) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::Bind", "glGetUniformLocation()");
assert(location != -1 &&
"Bind() : The named uniform sampler does not exist.");
glUniform1i(location, texture_id);
CHECK_ERROR("ShaderProgram::Bind", "glUniform1i()");
}
void ShaderProgram::BindInt(const std::string& name, int i) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::BindInt", "glGetUniformLocation()");
assert(location != -1 &&
"BindInt() : The named uniform variable does not exist.");
glUniform1i(location, i);
CHECK_ERROR("ShaderProgram::BindInt", "glUniform1i()");
}
void ShaderProgram::BindInts(const std::string& name, int i0, int i1) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::BindInts", "glGetUniformLocation()");
assert(location != -1 &&
"BindInts() : The named uniform variable does not exist.");
glUniform2i(location, i0, i1);
CHECK_ERROR("ShaderProgram::BindInts", "glUniform2i()");
}
void ShaderProgram::BindInts(const std::string& name, int i0, int i1, int i2) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::BindInts", "glGetUniformLocation()");
assert(location != -1 &&
"BindInts() : The named uniform variable does not exist.");
glUniform3i(location, i0, i1, i2);
CHECK_ERROR("ShaderProgram::BindInts", "glUniform3i()");
}
void ShaderProgram::BindInts(const std::string& name, int i0, int i1, int i2, int i3) {
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::BindInts", "glGetUniformLocation()");
assert(location != -1 &&
"BindInts() : The named uniform variable does not exist.");
glUniform4i(location, i0, i1, i2, i3);
CHECK_ERROR("ShaderProgram::BindInts", "glUniform4i()");
}
void ShaderProgram::BindInts(const std::string& name, std::size_t element_size, const std::vector<GLint> &ints) {
assert(1 <= element_size && element_size <= 4);
assert((ints.size() % element_size) == 0);
std::function<void (GLint, GLsizei, const GLint*)> functions[] =
{ glUniform1iv,
glUniform2iv,
glUniform3iv,
glUniform4iv
};
glGetError();
GLint location = glGetUniformLocation(m_program_id, name.c_str());
CHECK_ERROR("ShaderProgram::BindInts", "glGetUniformLocation()");
assert(location != -1 &&
"BindInts() : The named uniform variable does not exist.");
functions[element_size - 1](location, ints.size() / element_size, ints.data());
CHECK_ERROR("ShaderProgram::BindInts", "glUniformNiv()");
}
bool ShaderProgram::AllValuesBound() {
bool retval = false;
glGetError();
glValidateProgram(m_program_id);
CHECK_ERROR("ShaderProgram::AllValuesBound", "glValidateProgram()");
GLint status;
glGetProgramiv(m_program_id, GL_VALIDATE_STATUS, &status);
CHECK_ERROR("ShaderProgram::AllValuesBound", "glGetProgramiv(GL_VALIDATE_STATUS)");
retval = status;
GetProgramLog(m_program_id, m_program_validity_log);
return retval;
}
void ShaderProgram::Use() {
glGetError();
glUseProgram(m_program_id);
CHECK_ERROR("ShaderProgram::Use", "glUseProgram()");
}
void ShaderProgram::stopUse()
{ glUseProgram(0); }
|
