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Add built-in stretch functionality to depth readback shader path

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Henrik Rydgård committed 2023-02-03 19:06:40 +01:00
1 parent d6b37b00cc
commit f2a6c744bc
6 files changed
+48 -22
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GPU/Common/FramebufferManagerCommon.cpp
+27 -12
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@@ -2640,17 +2640,26 @@ bool FramebufferManagerCommon::GetDepthbuffer(u32 fb_address, int fb_stride, u32
}
bool flipY = (GetGPUBackend() == GPUBackend::OPENGL && !useBufferedRendering_) ? true : false;
if (gstate_c.Use(GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT)) {
buffer.Allocate(w, h, GPU_DBG_FORMAT_FLOAT_DIV_256, flipY);
} else {
buffer.Allocate(w, h, GPU_DBG_FORMAT_FLOAT, flipY);
}
// No need to free on failure, that's the caller's job (it likely will reuse a buffer.)
bool retval = draw_->CopyFramebufferToMemorySync(vfb->fbo, Draw::FB_DEPTH_BIT, 0, 0, w, h, Draw::DataFormat::D32F, buffer.GetData(), w, "GetDepthBuffer");
if (!retval) {
// Try ReadbackDepthbufferSync, in case GLES.
bool retval;
if (true) {
// Always use ReadbackDepthbufferSync (while we debug it)
buffer.Allocate(w, h, GPU_DBG_FORMAT_16BIT, flipY);
retval = ReadbackDepthbufferSync(vfb->fbo, 0, 0, w, h, (uint16_t *)buffer.GetData(), w);
retval = ReadbackDepthbufferSync(vfb->fbo, 0, 0, w, h, (uint16_t *)buffer.GetData(), w, w, h);
} else {
// Old code
if (gstate_c.Use(GPU_SCALE_DEPTH_FROM_24BIT_TO_16BIT)) {
buffer.Allocate(w, h, GPU_DBG_FORMAT_FLOAT_DIV_256, flipY);
} else {
buffer.Allocate(w, h, GPU_DBG_FORMAT_FLOAT, flipY);
}
// No need to free on failure, that's the caller's job (it likely will reuse a buffer.)
retval = draw_->CopyFramebufferToMemorySync(vfb->fbo, Draw::FB_DEPTH_BIT, 0, 0, w, h, Draw::DataFormat::D32F, buffer.GetData(), w, "GetDepthBuffer");
if (!retval) {
// Try ReadbackDepthbufferSync, in case GLES.
buffer.Allocate(w, h, GPU_DBG_FORMAT_16BIT, flipY);
retval = ReadbackDepthbufferSync(vfb->fbo, 0, 0, w, h, (uint16_t *)buffer.GetData(), w, w, h);
}
}
// After a readback we'll have flushed and started over, need to dirty a bunch of things to be safe.
@@ -2748,7 +2757,7 @@ void FramebufferManagerCommon::ReadbackFramebufferSync(VirtualFramebuffer *vfb,
if (channel == RASTER_DEPTH) {
_assert_msg_(vfb && vfb->z_address != 0 && vfb->z_stride != 0, "Depth buffer invalid");
ReadbackDepthbufferSync(vfb->fbo, x, y, w, h, (uint16_t *)destPtr, stride);
ReadbackDepthbufferSync(vfb->fbo, x, y, w, h, (uint16_t *)destPtr, stride, w, h);
} else {
draw_->CopyFramebufferToMemorySync(vfb->fbo, channel == RASTER_COLOR ? Draw::FB_COLOR_BIT : Draw::FB_DEPTH_BIT, x, y, w, h, destFormat, destPtr, stride, "ReadbackFramebufferSync");
}
@@ -2760,8 +2769,14 @@ void FramebufferManagerCommon::ReadbackFramebufferSync(VirtualFramebuffer *vfb,
gpuStats.numReadbacks++;
}
bool FramebufferManagerCommon::ReadbackDepthbufferSync(Draw::Framebuffer *fbo, int x, int y, int w, int h, uint16_t *pixels, int pixelsStride) {
bool FramebufferManagerCommon::ReadbackDepthbufferSync(Draw::Framebuffer *fbo, int x, int y, int w, int h, uint16_t *pixels, int pixelsStride, int destW, int destH) {
Draw::DataFormat destFormat = GEFormatToThin3D(GE_FORMAT_DEPTH16);
if (w != destW || h != destH) {
// This path can't handle stretch blits. That's fine, this path is going away later.
return false;
}
// TODO: Apply depth scale factors if we don't have depth clamp.
return draw_->CopyFramebufferToMemorySync(fbo, Draw::FB_DEPTH_BIT, x, y, w, h, destFormat, pixels, pixelsStride, "ReadbackDepthbufferSync");
}