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a. Refine captureScreen, glReadPixels shoud from glviewport's origin. 

b. Sets desktop GL min version from 2.0 to 2.1
This commit is contained in:
halx99 2020-09-12 14:50:48 +08:00
parent 2f96108c75
commit 4f51702b66
1 changed files with 4 additions and 4 deletions
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8
cocos/renderer/backend/opengl/CommandBufferGL.cpp
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@ -635,9 +635,9 @@ void CommandBufferGL::capture(TextureBackend* texture, std::function<void(const
PixelBufferDescriptor pbd;
if (!texture) { // screen capture
#if defined(GL_VERSION_2_1)
auto width = _viewPort.w + _viewPort.x;
auto height = _viewPort.h + _viewPort.y;
#if defined(GL_VERSION_2_1) && 0
auto width = _viewPort.w;
auto height = _viewPort.h;
int bufferSize = width * height * 4;
glPixelStorei(GL_PACK_ALIGNMENT, 1);
@ -679,7 +679,7 @@ void CommandBufferGL::capture(TextureBackend* texture, std::function<void(const
return;
}
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glReadPixels(0, 0, _viewPort.w, _viewPort.h, GL_RGBA, GL_UNSIGNED_BYTE, buffer.get());
glReadPixels(_viewPort.x, _viewPort.y, _viewPort.w, _viewPort.h, GL_RGBA, GL_UNSIGNED_BYTE, buffer.get());
GLubyte* flippedBuffer = (GLubyte*)malloc(bufferSize);
memset(flippedBuffer, 0, bufferSize);