Module: wine Branch: master Commit: 8e599287780c2aef7ecae1e35f597e534d7f626e URL: https://source.winehq.org/git/wine.git/?a=commit;h=8e599287780c2aef7ecae1e35...
Author: Ziqing Hui zhui@codeweavers.com Date: Wed Aug 19 10:03:04 2020 +0800
windowscodecs/tests: Add tests for decoding BC3 format.
Signed-off-by: Ziqing Hui zhui@codeweavers.com Signed-off-by: Esme Povirk esme@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/windowscodecs/tests/ddsformat.c | 67 +++++++++++++++++++++++++++++++++++- 1 file changed, 66 insertions(+), 1 deletion(-)
diff --git a/dlls/windowscodecs/tests/ddsformat.c b/dlls/windowscodecs/tests/ddsformat.c index 8f283b3f0f..b28d4938ab 100644 --- a/dlls/windowscodecs/tests/ddsformat.c +++ b/dlls/windowscodecs/tests/ddsformat.c @@ -629,6 +629,67 @@ static void decode_bc2(const BYTE *blocks, UINT block_count, UINT width, UINT he } }
+static void decode_bc3(const BYTE *block_data, UINT block_count, UINT width, UINT height, DWORD *buffer) +{ + static const UINT BLOCK_SIZE = 16; + + int i, j, color_index, alpha_index, block_x, block_y, x, y; + const BYTE *block, *color_indices, *alpha_indices; + WORD color[4]; + BYTE alpha[8]; + + block_x = 0; + block_y = 0; + + for (i = 0; i < block_count; i++) + { + block = block_data + i * BLOCK_SIZE; + + color[0] = *((WORD *)(block + 8)); + color[1] = *((WORD *)(block + 10)); + color[2] = MAKE_RGB565(((GET_RGB565_R(color[0]) * 2 + GET_RGB565_R(color[1]) + 1) / 3), + ((GET_RGB565_G(color[0]) * 2 + GET_RGB565_G(color[1]) + 1) / 3), + ((GET_RGB565_B(color[0]) * 2 + GET_RGB565_B(color[1]) + 1) / 3)); + color[3] = MAKE_RGB565(((GET_RGB565_R(color[0]) + GET_RGB565_R(color[1]) * 2 + 1) / 3), + ((GET_RGB565_G(color[0]) + GET_RGB565_G(color[1]) * 2 + 1) / 3), + ((GET_RGB565_B(color[0]) + GET_RGB565_B(color[1]) * 2 + 1) / 3)); + + alpha[0] = *block; + alpha[1] = *(block + 1); + if (alpha[0] > alpha[1]) { + for (j = 2; j < 8; j++) + { + alpha[j] = (BYTE)((alpha[0] * (8 - j) + alpha[1] * (j - 1) + 3) / 7); + } + } else { + for (j = 2; j < 6; j++) + { + alpha[j] = (BYTE)((alpha[0] * (6 - j) + alpha[1] * (j - 1) + 2) / 5); + } + alpha[6] = 0; + alpha[7] = 0xFF; + } + + alpha_indices = block + 2; + color_indices = block + 12; + for (j = 0; j < 16; j++) + { + x = block_x + j % 4; + y = block_y + j / 4; + if (x >= width || y >= height) continue; + alpha_index = (*((DWORD *)(alpha_indices + (j / 8) * 3)) >> ((j % 8) * 3)) & 0x7; + color_index = (color_indices[j / 4] >> ((j % 4) * 2)) & 0x3; + buffer[x + y * width] = rgb565_to_argb(color[color_index], alpha[alpha_index]); + } + + block_x += 4; + if (block_x >= width) { + block_x = 0; + block_y += 4; + } + } +} + static BOOL color_match(DWORD color_a, DWORD color_b) { static const int tolerance = 8; @@ -1080,7 +1141,8 @@ static void test_dds_decoder_frame_data(IWICBitmapFrameDecode* frame, IWICDdsFra ok(hr == E_INVALIDARG, "Test %u, frame %u: CopyBlocks got unexpected hr %#x\n", i, frame_index, hr);
if (format_info.DxgiFormat == DXGI_FORMAT_BC1_UNORM || - format_info.DxgiFormat == DXGI_FORMAT_BC2_UNORM ) { + format_info.DxgiFormat == DXGI_FORMAT_BC2_UNORM || + format_info.DxgiFormat == DXGI_FORMAT_BC3_UNORM ) { switch (format_info.DxgiFormat) { case DXGI_FORMAT_BC1_UNORM: @@ -1089,6 +1151,9 @@ static void test_dds_decoder_frame_data(IWICBitmapFrameDecode* frame, IWICDdsFra case DXGI_FORMAT_BC2_UNORM: decode_bc2(test_data[i].data + block_offset, width_in_blocks * height_in_blocks, frame_width, frame_height, pixels); break; + case DXGI_FORMAT_BC3_UNORM: + decode_bc3(test_data[i].data + block_offset, width_in_blocks * height_in_blocks, frame_width, frame_height, pixels); + break; default: break; }
-
Alexandre Julliard