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
|
#include <mbgl/platform/default/headless_view.hpp>
#include <mbgl/gl/gl.hpp>
#include <cassert>
namespace mbgl {
void HeadlessView::bindFramebuffer() {
assert(fbo);
MBGL_CHECK_ERROR(glBindFramebuffer(GL_FRAMEBUFFER, fbo));
}
void HeadlessView::resizeFramebuffer() {
const unsigned int w = dimensions[0] * pixelRatio;
const unsigned int h = dimensions[1] * pixelRatio;
// Create depth/stencil buffer
MBGL_CHECK_ERROR(glGenRenderbuffers(1, &fboDepthStencil));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, fboDepthStencil));
MBGL_CHECK_ERROR(glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, w, h));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, 0));
MBGL_CHECK_ERROR(glGenRenderbuffers(1, &fboColor));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, fboColor));
MBGL_CHECK_ERROR(glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8_OES, w, h));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, 0));
MBGL_CHECK_ERROR(glGenFramebuffers(1, &fbo));
MBGL_CHECK_ERROR(glBindFramebuffer(GL_FRAMEBUFFER, fbo));
MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, fboColor));
MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, fboDepthStencil));
MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fboDepthStencil));
GLenum status = MBGL_CHECK_ERROR(glCheckFramebufferStatus(GL_FRAMEBUFFER));
if (status != GL_FRAMEBUFFER_COMPLETE) {
std::string error("Couldn't create framebuffer: ");
switch (status) {
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: (error += "incomplete attachment"); break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: error += "incomplete missing attachment"; break;
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS: error += "incomplete dimensions"; break;
case GL_FRAMEBUFFER_UNSUPPORTED: error += "unsupported"; break;
default: error += "other"; break;
}
throw std::runtime_error(error);
}
MBGL_CHECK_ERROR(glViewport(0, 0, w, h));
}
void HeadlessView::clearBuffers() {
MBGL_CHECK_ERROR(glBindFramebuffer(GL_FRAMEBUFFER, 0));
if (fbo) {
MBGL_CHECK_ERROR(glDeleteFramebuffers(1, &fbo));
fbo = 0;
}
if (fboColor) {
MBGL_CHECK_ERROR(glDeleteRenderbuffers(1, &fboColor));
fboColor = 0;
}
if (fboDepthStencil) {
MBGL_CHECK_ERROR(glDeleteRenderbuffers(1, &fboDepthStencil));
fboDepthStencil = 0;
}
}
} // namespace mbgl
|
