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GPU/HW: GPU-based RGBA8->RGB5551 conversion for readbacks

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This commit is contained in:
Connor McLaughlin
2019-11-14 16:58:27 +10:00
parent 878a76e258
commit 3998b9684e
8 changed files with 197 additions and 76 deletions
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34
src/core/gpu_hw.cpp
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@ -28,6 +28,8 @@ void GPU_HW::Reset()
{
GPU::Reset();
m_vram_shadow.fill(0);
m_batch = {};
m_batch_ubo_data = {};
m_batch_ubo_dirty = true;
@ -181,6 +183,22 @@ void GPU_HW::CalcScissorRect(int* left, int* top, int* right, int* bottom)
*bottom = std::max<u32>((m_drawing_area.bottom + 1) * m_resolution_scale, *top + 1);
}
Common::Rectangle<u32> GPU_HW::GetVRAMTransferBounds(u32 x, u32 y, u32 width, u32 height)
{
Common::Rectangle<u32> out_rc = Common::Rectangle<u32>::FromExtents(x, y, width, height);
if (out_rc.right > VRAM_WIDTH)
{
out_rc.left = 0;
out_rc.right = VRAM_WIDTH;
}
if (out_rc.bottom > VRAM_HEIGHT)
{
out_rc.top = 0;
out_rc.bottom = VRAM_HEIGHT;
}
return out_rc;
}
GPU_HW::BatchPrimitive GPU_HW::GetPrimitiveForCommand(RenderCommand rc)
{
if (rc.primitive == Primitive::Line)
@ -191,6 +209,22 @@ GPU_HW::BatchPrimitive GPU_HW::GetPrimitiveForCommand(RenderCommand rc)
return BatchPrimitive::Triangles;
}
void GPU_HW::ReadVRAM(u32 x, u32 y, u32 width, u32 height, void* buffer)
{
u8* out_ptr = static_cast<u8*>(buffer);
for (u32 row = 0; row < height; row++)
{
const u32 row_offset = ((y + row) % VRAM_HEIGHT) * VRAM_WIDTH;
for (u32 col = 0; col < width; col++)
{
const u32 col_offset = row_offset + ((x + col) % VRAM_WIDTH);
std::memcpy(out_ptr, &m_vram_shadow[col_offset], sizeof(u16));
out_ptr += sizeof(u16);
}
}
}
void GPU_HW::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color)
{
m_vram_dirty_rect.Include(Common::Rectangle<u32>::FromExtents(x, y, width, height));