forked from hoffstadt/DearPyGui
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathmvUtilities_linux.cpp
More file actions
312 lines (248 loc) · 10.1 KB
/
mvUtilities_linux.cpp
File metadata and controls
312 lines (248 loc) · 10.1 KB
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
305
306
307
308
309
310
311
312
#include "mvUtilities.h"
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "stb_image_write.h"
#include <string>
#include <vector>
#include <unordered_map>
#include <GL/gl3w.h>
#include <GLFW/glfw3.h>
#include "mvContext.h"
#include "mvLinuxSpecifics.h"
#include "mvViewport.h"
#include "mvPyUtils.h"
#include "mvCustomTypes.h"
static std::unordered_map<GLuint, GLuint> PBO_ids;
static void
UpdatePixels(GLubyte* dst, const float* data, int size)
{
if(!dst)
return;
auto ptr = (float*)dst;
for(int i = 0; i < size; ++i)
{
ptr[i] = data[i];
}
}
void
OutputFrameBufferArray(PymvBuffer* out)
{
mvViewport* viewport = GContext->viewport;
auto viewportData = (mvViewportData*)viewport->platformSpecifics;
int display_w, display_h;
glfwGetFramebufferSize(viewportData->handle, &display_w, &display_h);
stbi_flip_vertically_on_write(true);
GLint ReadType = GL_UNSIGNED_BYTE;
GLint ReadFormat = GL_RGBA;
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &ReadType);
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &ReadFormat);
auto data = (GLubyte*)malloc(4 * display_w * display_h);
if (data)
{
glReadPixels(0, 0, display_w, display_h, ReadFormat, ReadType, data);
out->arr.length = display_w * display_h * 4;
f32* tdata = new f32[out->arr.length];
out->arr.width = display_w;
out->arr.height = display_h;
for (int row = 0; row < out->arr.height; row++)
{
for (int col = 0; col < out->arr.width * 4; col++)
{
tdata[row * out->arr.width * 4 + col] = (f32)data[(out->arr.height - 1 - row) * out->arr.width * 4 + col] / 255.0f;
}
}
out->arr.data = tdata;
free(data);
}
}
void
OutputFrameBuffer(const char* filepath)
{
mvViewport* viewport = GContext->viewport;
auto viewportData = (mvViewportData*)viewport->platformSpecifics;
int display_w, display_h;
glfwGetFramebufferSize(viewportData->handle, &display_w, &display_h);
stbi_flip_vertically_on_write(true);
GLint ReadType = GL_UNSIGNED_BYTE;
GLint ReadFormat = GL_RGBA;
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &ReadType);
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &ReadFormat);
auto data = (GLubyte*)malloc(4 * display_w * display_h);
glReadPixels(0, 0, display_w, display_h, ReadFormat, ReadType, data);
stbi_write_png(filepath, display_w, display_h, 4, data, display_w*4);
free(data);
}
void*
LoadTextureFromArray(unsigned width, unsigned height, float* data)
{
// Create a OpenGL texture identifier
GLuint image_texture;
glGenTextures(1, &image_texture);
glBindTexture(GL_TEXTURE_2D, image_texture);
// Setup filtering parameters for display
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Upload pixels into texture
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_FLOAT, data);
return reinterpret_cast<void *>(image_texture);
}
void*
LoadTextureFromArrayDynamic(unsigned width, unsigned height, float* data)
{
// Create a OpenGL texture identifier
GLuint image_texture;
glGenTextures(1, &image_texture);
glBindTexture(GL_TEXTURE_2D, image_texture);
// Setup filtering parameters for display
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Upload pixels into texture
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_FLOAT, data);
GLuint pboid;
glGenBuffers(1, &pboid);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pboid);
glBufferData(GL_PIXEL_UNPACK_BUFFER, width*height*4*sizeof(float), 0, GL_STREAM_DRAW);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
PBO_ids[image_texture] = pboid;
return reinterpret_cast<void *>(image_texture);
}
void*
LoadTextureFromArrayRaw(unsigned width, unsigned height, float* data, int components)
{
// Create a OpenGL texture identifier
GLuint image_texture;
glGenTextures(1, &image_texture);
glBindTexture(GL_TEXTURE_2D, image_texture);
// Setup filtering parameters for display
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Upload pixels into texture
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
if(components == 4)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_FLOAT, data);
else
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_FLOAT, data);
GLuint pboid;
glGenBuffers(1, &pboid);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pboid);
glBufferData(GL_PIXEL_UNPACK_BUFFER, width * height * components * sizeof(float), 0, GL_STREAM_DRAW);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
PBO_ids[image_texture] = pboid;
return reinterpret_cast<void*>(image_texture);
}
void*
LoadTextureFromFile(const char* filename, int& width, int& height)
{
// Load from file
int image_width = 0;
int image_height = 0;
unsigned char* image_data = stbi_load(filename, &image_width, &image_height, nullptr, 4);
if (image_data == nullptr)
return nullptr;
// Create a OpenGL texture identifier
GLuint image_texture;
glGenTextures(1, &image_texture);
glBindTexture(GL_TEXTURE_2D, image_texture);
// Setup filtering parameters for display
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Upload pixels into texture
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image_width, image_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image_data);
stbi_image_free(image_data);
width = image_width;
height = image_height;
return reinterpret_cast<void *>(image_texture);;
}
bool
UnloadTexture(const std::string& filename)
{
// TODO : decide if cleanup is necessary
return true;
}
void
FreeTexture(void* texture)
{
auto out_srv = (GLuint)(size_t)texture;
if(PBO_ids.count(out_srv) != 0)
PBO_ids.erase(out_srv);
glDeleteTextures(1, &out_srv);
}
void
UpdateTexture(void* texture, unsigned width, unsigned height, std::vector<float>& data)
{
auto textureId = (GLuint)(size_t)texture;
// start to copy from PBO to texture object ///////
// bind the texture and PBO
glBindTexture(GL_TEXTURE_2D, textureId);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, PBO_ids[textureId]);
// copy pixels from PBO to texture object
// Use offset instead of ponter.
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, GL_RGBA, GL_FLOAT, 0);
///////////////////////////////////////////////////
// start to modify pixel values ///////////////////
// bind PBO to update pixel values
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, PBO_ids[textureId]);
// map the buffer object into client's memory
// Note that glMapBuffer() causes sync issue.
// If GPU is working with this buffer, glMapBuffer() will wait(stall)
// for GPU to finish its job. To avoid waiting (stall), you can call
// first glBufferData() with NULL pointer before glMapBuffer().
// If you do that, the previous data in PBO will be discarded and
// glMapBuffer() returns a new allocated pointer immediately
// even if GPU is still working with the previous data.
glBufferData(GL_PIXEL_UNPACK_BUFFER, width*height*4*sizeof(float), 0, GL_STREAM_DRAW);
GLubyte* ptr = (GLubyte*)glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);
if(ptr)
{
// update data directly on the mapped buffer
UpdatePixels(ptr, data.data(), data.size());
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); // release pointer to mapping buffer
}
///////////////////////////////////////////////////
// it is good idea to release PBOs with ID 0 after use.
// Once bound with 0, all pixel operations behave normal ways.
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
void
UpdateRawTexture(void* texture, unsigned width, unsigned height, float* data, int components)
{
auto textureId = (GLuint)(size_t)texture;
// start to copy from PBO to texture object ///////
// bind the texture and PBO
glBindTexture(GL_TEXTURE_2D, textureId);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, PBO_ids[textureId]);
// copy pixels from PBO to texture object
// Use offset instead of ponter.
if(components == 4)
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, GL_RGBA, GL_FLOAT, 0);
else
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, GL_RGB, GL_FLOAT, 0);
///////////////////////////////////////////////////
// start to modify pixel values ///////////////////
// bind PBO to update pixel values
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, PBO_ids[textureId]);
// map the buffer object into client's memory
// Note that glMapBuffer() causes sync issue.
// If GPU is working with this buffer, glMapBuffer() will wait(stall)
// for GPU to finish its job. To avoid waiting (stall), you can call
// first glBufferData() with NULL pointer before glMapBuffer().
// If you do that, the previous data in PBO will be discarded and
// glMapBuffer() returns a new allocated pointer immediately
// even if GPU is still working with the previous data.
glBufferData(GL_PIXEL_UNPACK_BUFFER, width * height * components * sizeof(float), 0, GL_STREAM_DRAW);
GLubyte* ptr = (GLubyte*)glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);
if (ptr)
{
// update data directly on the mapped buffer
UpdatePixels(ptr, data, width*height*components);
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); // release pointer to mapping buffer
}
///////////////////////////////////////////////////
// it is good idea to release PBOs with ID 0 after use.
// Once bound with 0, all pixel operations behave normal ways.
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}