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GPU: Move software copy/fill functions to base class so it can be used as fallback

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This commit is contained in:
Connor McLaughlin
2020-02-29 00:18:33 +10:00
parent e1d4c0b9d4
commit 7412e78aa1
3 changed files with 26 additions and 39 deletions
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28
src/core/gpu.cpp
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@ -789,7 +789,12 @@ void GPU::UpdateDisplay() {}
void GPU::ReadVRAM(u32 x, u32 y, u32 width, u32 height) {}
void GPU::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color) {}
void GPU::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color)
{
const u16 color16 = RGBA8888ToRGBA5551(color);
for (u32 yoffs = 0; yoffs < height; yoffs++)
std::fill_n(&m_vram_ptr[((y + yoffs) * VRAM_WIDTH) + x], width, color16);
}
void GPU::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data)
{
@ -826,7 +831,26 @@ void GPU::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data)
}
}
void GPU::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 width, u32 height) {}
void GPU::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 width, u32 height)
{
// This doesn't have a fast path, but do we really need one? It's not common.
const u16 mask_and = m_GPUSTAT.GetMaskAND();
const u16 mask_or = m_GPUSTAT.GetMaskOR();
for (u32 row = 0; row < height; row++)
{
const u16* src_row_ptr = &m_vram_ptr[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &m_vram_ptr[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
for (u32 col = 0; col < width; col++)
{
const u16 src_pixel = src_row_ptr[(src_x + col) % VRAM_WIDTH];
u16* dst_pixel_ptr = &dst_row_ptr[(dst_x + col) % VRAM_WIDTH];
if ((*dst_pixel_ptr & mask_and) == mask_and)
*dst_pixel_ptr = src_pixel | mask_or;
}
}
}
void GPU::DispatchRenderCommand(RenderCommand rc, u32 num_vertices, const u32* command_ptr) {}