tei/MapLibreParticleLab
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[core] move framebuffer reading to gl::Context

Browse Source
This commit is contained in:
Konstantin Käfer
2016-11-04 17:39:14 +01:00
parent eed16cb1bb
commit c90a559599
8 changed files with 51 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
platform/android/src/native_map_view.cpp
View File

@@ -10,8 +10,6 @@
#include <sys/system_properties.h>
#include <GLES2/gl2.h>
#include <mbgl/platform/platform.hpp>
#include <mbgl/platform/event.hpp>
#include <mbgl/platform/log.hpp>
@@ -204,18 +202,7 @@ void NativeMapView::render() {
snapshot = false;
// take snapshot
const unsigned int w = fbWidth;
const unsigned int h = fbHeight;
mbgl::PremultipliedImage image({ w, h });
MBGL_CHECK_ERROR(glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, image.data.get()));
const size_t stride = image.stride();
auto tmp = std::make_unique<uint8_t[]>(stride);
uint8_t *rgba = image.data.get();
for (int i = 0, j = h - 1; i < j; i++, j--) {
std::memcpy(tmp.get(), rgba + i * stride, stride);
std::memcpy(rgba + i * stride, rgba + j * stride, stride);
std::memcpy(rgba + j * stride, tmp.get(), stride);
}
auto image = getContext().readFramebuffer<mbgl::PremultipliedImage>(getFramebufferSize());
// encode and convert to jbytes
std::string string = encodePNG(image);