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
|
// 26 may 2019
#include "uipriv_unix.h"
#include <GL/gl.h>
extern GThread* gtkthread;
struct uiGLContext
{
GtkWidget* widget;
GdkWindow* window;
GdkGLContext *gctx;
int vermaj, vermin;
GMutex mutex;
int width, height;
int scale;
GLuint renderbuffer[2][2];
GLuint framebuffer[2];
int backbuffer;
};
static void areaAllocRenderbuffer(uiGLContext* glctx);
static PFNGLGENRENDERBUFFERSPROC _glGenRenderbuffers;
static PFNGLDELETERENDERBUFFERSPROC _glDeleteRenderbuffers;
static PFNGLBINDRENDERBUFFERPROC _glBindRenderbuffer;
static PFNGLRENDERBUFFERSTORAGEPROC _glRenderbufferStorage;
static PFNGLGETRENDERBUFFERPARAMETERIVPROC _glGetRenderbufferParameteriv;
static PFNGLGENRENDERBUFFERSPROC _glGenFramebuffers;
static PFNGLDELETERENDERBUFFERSPROC _glDeleteFramebuffers;
static PFNGLBINDRENDERBUFFERPROC _glBindFramebuffer;
static PFNGLFRAMEBUFFERTEXTUREPROC _glFramebufferTexture;
static PFNGLFRAMEBUFFERRENDERBUFFERPROC _glFramebufferRenderbuffer;
static PFNGLCHECKFRAMEBUFFERSTATUSPROC _glCheckFramebufferStatus;
static int _procsLoaded = 0;
static void _loadGLProcs(GdkGLContext* glctx)
{
if (_procsLoaded) return;
_glGenRenderbuffers = (PFNGLGENRENDERBUFFERSPROC)uiGLGetProcAddress("glGenRenderbuffers");
_glDeleteRenderbuffers = (PFNGLDELETERENDERBUFFERSPROC)uiGLGetProcAddress("glDeleteRenderbuffers");
_glBindRenderbuffer = (PFNGLBINDRENDERBUFFERPROC)uiGLGetProcAddress("glBindRenderbuffer");
_glRenderbufferStorage = (PFNGLRENDERBUFFERSTORAGEPROC)uiGLGetProcAddress("glRenderbufferStorage");
_glGetRenderbufferParameteriv = (PFNGLGETRENDERBUFFERPARAMETERIVPROC)uiGLGetProcAddress("glGetRenderbufferParameteriv");
_glGenFramebuffers = (PFNGLGENFRAMEBUFFERSPROC)uiGLGetProcAddress("glGenFramebuffers");
_glDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSPROC)uiGLGetProcAddress("glDeleteFramebuffers");
_glBindFramebuffer = (PFNGLBINDFRAMEBUFFERPROC)uiGLGetProcAddress("glBindFramebuffer");
_glFramebufferTexture = (PFNGLFRAMEBUFFERTEXTUREPROC)uiGLGetProcAddress("glFramebufferTexture");
_glFramebufferRenderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFERPROC)uiGLGetProcAddress("glFramebufferRenderbuffer");
_glCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSPROC)uiGLGetProcAddress("glCheckFramebufferStatus");
_procsLoaded = 1;
}
uiGLContext *createGLContext(GtkWidget* widget, int maj, int min)
{
GdkWindow* gdkwin = gtk_widget_get_window(widget);
GError* err = NULL;
GdkGLContext* gctx = gdk_window_create_gl_context(gdkwin, &err);
if (err != NULL || gctx == NULL)
{
return NULL;
}
// TODO: make the set_use_es call conditional (#ifdef or smth) for older versions of gdk?
gdk_gl_context_set_use_es(gctx, FALSE);
gdk_gl_context_set_required_version(gctx, maj, min);
gboolean res = gdk_gl_context_realize(gctx, &err);
if (err != NULL || res == FALSE)
{
return NULL;
}
uiGLContext* ctx = uiNew(uiGLContext);
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
int window_scale = gdk_window_get_scale_factor(gdkwin);
ctx->width = allocation.width;
ctx->height = allocation.height;
ctx->scale = window_scale;
gdk_gl_context_make_current(gctx);
_loadGLProcs(gctx);
areaAllocRenderbuffer(ctx);
ctx->backbuffer = 0;
g_mutex_init(&ctx->mutex);
ctx->widget = widget;
ctx->window = gdkwin;
ctx->gctx = gctx;
return ctx;
}
void freeGLContext(uiGLContext* glctx)
{
if (glctx == NULL) return;
gdk_gl_context_clear_current();
g_object_unref(glctx->gctx);
uiFree(glctx);
}
static void areaAllocRenderbuffer(uiGLContext* glctx)
{
_glGenRenderbuffers(4, &glctx->renderbuffer[0][0]);printf("ylarg0 %04X, %d %d\n", glGetError(), glctx->width, glctx->height);
//glGenTextures(2, &glctx->renderbuffer[0]);
_glGenFramebuffers(2, &glctx->framebuffer[0]);printf("ylarg1 %04X\n", glGetError());
printf("FB %08X created under ctx %p (%p %p)\n", glctx?glctx->framebuffer[0]:0, gdk_gl_context_get_current(), glctx?glctx->gctx:NULL, glctx);
/*glBindTexture(GL_TEXTURE_2D, glctx->renderbuffer[0]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glBindTexture(GL_TEXTURE_2D, glctx->renderbuffer[1]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);*/
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[0][0]);printf("ylarg1 %04X\n", glGetError());
_glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB, glctx->width*glctx->scale, glctx->height*glctx->scale);printf("ylarg1 %04X\n", glGetError());
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[0][1]);printf("ylarg1 %04X\n", glGetError());
_glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_STENCIL, glctx->width*glctx->scale, glctx->height*glctx->scale);printf("ylarg1 %04X\n", glGetError());
_glBindFramebuffer(GL_FRAMEBUFFER, glctx->framebuffer[0]);printf("ylarg2 %04X\n", glGetError());
/*_glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, glctx->renderbuffer[0], 0);
_glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, glctx->renderbuffer[1], 0);*/
_glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, glctx->renderbuffer[0][0]);printf("ylarg3 %04X\n", glGetError());
_glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, glctx->renderbuffer[0][1]);printf("ylarg4 %04X\n", glGetError());
//printf("ylarg: %08X, %04X, %08X %08X\n", glctx->framebuffer, glGetError(), glctx->renderbuffer[0], glctx->renderbuffer[1]);
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[1][0]);printf("ylarg1 %04X\n", glGetError());
_glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB, glctx->width*glctx->scale, glctx->height*glctx->scale);printf("ylarg1 %04X\n", glGetError());
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[1][1]);printf("ylarg1 %04X\n", glGetError());
_glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_STENCIL, glctx->width*glctx->scale, glctx->height*glctx->scale);printf("ylarg1 %04X\n", glGetError());
_glBindFramebuffer(GL_FRAMEBUFFER, glctx->framebuffer[1]);printf("ylarg2 %04X\n", glGetError());
/*_glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, glctx->renderbuffer[0], 0);
_glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, glctx->renderbuffer[1], 0);*/
_glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, glctx->renderbuffer[1][0]);printf("ylarg3 %04X\n", glGetError());
_glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, glctx->renderbuffer[1][1]);printf("ylarg4 %04X\n", glGetError());
//printf("ylarg: %08X, %04X, %08X %08X\n", glctx->framebuffer, glGetError(), glctx->renderbuffer[0], glctx->renderbuffer[1]);
if(_glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
printf("FRAMEBUFFER IS BAD!! %04X\n", _glCheckFramebufferStatus(GL_FRAMEBUFFER));
int alpha_size;
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[0][0]);
_glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_ALPHA_SIZE, &alpha_size);
printf("FRAMEBUFFER GOOD. ALPHA SIZE IS %d\n", alpha_size);
}
static void areaRellocRenderbuffer(uiGLContext* glctx)
{
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[0][0]);
_glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB, glctx->width*glctx->scale, glctx->height*glctx->scale);
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[0][1]);
_glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_STENCIL, glctx->width*glctx->scale, glctx->height*glctx->scale);
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[1][0]);
_glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB, glctx->width*glctx->scale, glctx->height*glctx->scale);
_glBindRenderbuffer(GL_RENDERBUFFER, glctx->renderbuffer[1][1]);
_glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_STENCIL, glctx->width*glctx->scale, glctx->height*glctx->scale);
}
void areaPreRedrawGL(uiGLContext* glctx)
{
g_mutex_lock(&glctx->mutex);
glctx->backbuffer = glctx->backbuffer ? 0 : 1;
}
void areaPostRedrawGL(uiGLContext* glctx)
{
g_mutex_unlock(&glctx->mutex);
}
void areaDrawGL(GtkWidget* widget, uiAreaDrawParams* dp, cairo_t* cr, uiGLContext* glctx)
{
int window_scale = gdk_window_get_scale_factor(glctx->window);
if (glctx->width != dp->AreaWidth || glctx->height != dp->AreaHeight || glctx->scale != window_scale)
{
glctx->width = dp->AreaWidth;
glctx->height = dp->AreaHeight;
glctx->scale = window_scale;
areaRellocRenderbuffer(glctx);
}
gdk_cairo_draw_from_gl(cr, gtk_widget_get_window(widget),
glctx->renderbuffer[glctx->backbuffer][0], GL_RENDERBUFFER,
1, 0, 0, glctx->width*glctx->scale, glctx->height*glctx->scale);
}
int uiGLGetFramebuffer(uiGLContext* ctx)
{
return ctx->framebuffer[ctx->backbuffer];// ? 0 : 1];
}
float uiGLGetFramebufferScale(uiGLContext* ctx)
{
return (float)ctx->scale;
}
void uiGLSwapBuffers(uiGLContext* ctx)
{
// nothing to do here, GTK will take care of this
//glFinish();
}
void uiGLMakeContextCurrent(uiGLContext* ctx)
{
if (!ctx)
{
gdk_gl_context_clear_current();
return;
}
if (ctx->gctx == gdk_gl_context_get_current()) return;
gdk_gl_context_make_current(ctx->gctx);
}
void uiGLBegin(uiGLContext* ctx)
{
if (g_thread_self() != gtkthread)
{
g_mutex_lock(&ctx->mutex);
}
}
void uiGLEnd(uiGLContext* ctx)
{
if (g_thread_self() != gtkthread)
{
g_mutex_unlock(&ctx->mutex);
}
}
void *uiGLGetProcAddress(const char* proc)
{
printf("get: %s - ", proc);
void* a = dlsym(NULL, proc);
void* b = glXGetProcAddress(proc);
void* c = glXGetProcAddressARB(proc);
printf("%p / %p / %p\n", a, b, c);
return a;
// this *will* break for older systems that don't have libglvnd!
// TODO: use a real solution
return dlsym(NULL /* RTLD_DEFAULT */, proc);
}
unsigned int uiGLGetVersion(uiGLContext* ctx)
{
if (!ctx) return 0;
return uiGLVersion(ctx->vermaj, ctx->vermin);
}
|