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Flaws remain, but acknowledge that pixel rate is double.

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This commit is contained in:
Thomas Harte 2024-04-01 10:48:20 -04:00
parent 914b88d115
commit 0866caf934
1 changed files with 7 additions and 5 deletions
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12
Machines/Acorn/Archimedes/Video.hpp
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@ -130,19 +130,16 @@ struct Video {
} }
} }
// Accumulate total phase.
++time_in_phase_;
// Grab some more pixels if appropriate. // Grab some more pixels if appropriate.
const auto flush_pixels = [&]() { const auto flush_pixels = [&]() {
const auto duration = static_cast<int>(time_in_phase_); const auto duration = static_cast<int>(time_in_phase_);
crt_.output_data(duration, static_cast<size_t>(time_in_phase_)); crt_.output_data(duration, static_cast<size_t>(time_in_phase_) * 2);
time_in_phase_ = 0; time_in_phase_ = 0;
pixels_ = nullptr; pixels_ = nullptr;
}; };
if(phase_ == Phase::Display) { if(phase_ == Phase::Display) {
if(pixels_ && time_in_phase_ == PixelBufferSize) { if(pixels_ && time_in_phase_ == PixelBufferSize/2) {
flush_pixels(); flush_pixels();
} }
@ -242,6 +239,9 @@ struct Video {
++pixel_count_; ++pixel_count_;
} }
// Accumulate total phase.
++time_in_phase_;
// Determine current output phase. // Determine current output phase.
Phase new_phase; Phase new_phase;
switch(vertical_state_.phase()) { switch(vertical_state_.phase()) {
@ -361,6 +361,8 @@ private:
uint32_t time_in_phase_ = 0; uint32_t time_in_phase_ = 0;
uint32_t pixel_count_ = 0; uint32_t pixel_count_ = 0;
uint16_t *pixels_ = nullptr; uint16_t *pixels_ = nullptr;
// It is elsewhere assumed that this size is a multiple of 8.
static constexpr size_t PixelBufferSize = 320; static constexpr size_t PixelBufferSize = 320;
// Programmer-set addresses. // Programmer-set addresses.