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gpu: add comments for TextureCopy
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@ -334,25 +334,25 @@ static void TextureCopy(const Regs::DisplayTransferConfig& config) {
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u32 remaining_size = Common::AlignDown(config.texture_copy.size, 16);
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u32 remaining_size = Common::AlignDown(config.texture_copy.size, 16);
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if (remaining_size == 0) {
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if (remaining_size == 0) {
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// Real hardware freeze on this
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LOG_CRITICAL(HW_GPU, "zero size. Real hardware freezes on this.");
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LOG_CRITICAL(HW_GPU, "zero size");
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return;
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return;
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}
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}
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u32 input_gap = config.texture_copy.input_gap * 16;
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u32 input_gap = config.texture_copy.input_gap * 16;
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u32 input_width = input_gap == 0 ? remaining_size : config.texture_copy.input_width * 16;
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u32 output_gap = config.texture_copy.output_gap * 16;
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u32 output_gap = config.texture_copy.output_gap * 16;
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// Zero gap means contiguous input/output even if width = 0. To avoid infinite loop below, width
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// is assigned with the total size if gap = 0.
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u32 input_width = input_gap == 0 ? remaining_size : config.texture_copy.input_width * 16;
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u32 output_width = output_gap == 0 ? remaining_size : config.texture_copy.output_width * 16;
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u32 output_width = output_gap == 0 ? remaining_size : config.texture_copy.output_width * 16;
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if (input_width == 0) {
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if (input_width == 0) {
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// Real hardware freeze on this
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LOG_CRITICAL(HW_GPU, "zero input width. Real hardware freezes on this.");
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LOG_CRITICAL(HW_GPU, "zero input width");
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return;
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return;
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}
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}
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if (output_width == 0) {
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if (output_width == 0) {
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// Real hardware freeze on this
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LOG_CRITICAL(HW_GPU, "zero output width. Real hardware freezes on this.");
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LOG_CRITICAL(HW_GPU, "zero output width");
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return;
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return;
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}
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}
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@ -225,7 +225,7 @@ struct Regs {
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INSERT_PADDING_WORDS(0x1);
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INSERT_PADDING_WORDS(0x1);
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struct {
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struct {
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u32 size;
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u32 size; // The lower 4 bits are ignored
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union {
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union {
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u32 input_size;
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u32 input_size;
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