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Blitting improvements

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* Use a single QImage copy for actual drawing
* Use std::array and std::unique_ptr for image buffers
* Signal immediately after copying the buffer to internal image
This commit is contained in:
Cacodemon345
2021-12-21 16:38:13 +06:00
parent bbb0b38d31
commit 67a0f7a85f
9 changed files with 17 additions and 25 deletions
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9
src/qt/qt_rendererstack.cpp
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@@ -24,9 +24,8 @@ RendererStack::RendererStack(QWidget *parent) :
ui(new Ui::RendererStack)
{
ui->setupUi(this);
imagebufs = QVector<QImage>(2);
imagebufs[0] = QImage{QSize(2048, 2048), QImage::Format_RGB32};
imagebufs[1] = QImage{QSize(2048, 2048), QImage::Format_RGB32};
imagebufs[0].reset(new uint8_t[2048 * 2048 * 4]);
imagebufs[1].reset(new uint8_t[2048 * 2048 * 4]);
buffers_in_use = std::vector<std::atomic_flag>(2);
buffers_in_use[0].clear();
@@ -222,7 +221,7 @@ void RendererStack::blit(int x, int y, int w, int h)
sy = y;
sw = this->w = w;
sh = this->h = h;
auto imagebits = imagebufs[currentBuf].bits();
auto imagebits = imagebufs[currentBuf].get();
video_copy(imagebits + y * (2048 * 4) + x * 4, &(buffer32->line[y][x]), h * 2048 * sizeof(uint32_t));
if (screenshots)
@@ -230,6 +229,6 @@ void RendererStack::blit(int x, int y, int w, int h)
video_screenshot((uint32_t *)imagebits, 0, 0, 2048);
}
video_blit_complete();
blitToRenderer(imagebufs[currentBuf], sx, sy, sw, sh, &buffers_in_use[currentBuf]);
blitToRenderer(&imagebufs[currentBuf], sx, sy, sw, sh, &buffers_in_use[currentBuf]);
currentBuf = (currentBuf + 1) % 2;
}