6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-07-06 01:28:57 +00:00
Code Issues Projects Releases Wiki Activity

Added a first attempt to generate output scans for composite mode. So this in theory completes the CPU side of composite operations. Though I'm sure problems will reveal themselves.

Browse Source
This commit is contained in:
Thomas Harte 2016-03-05 21:18:28 -05:00
parent 3f39803d32
commit 6cddb4c9c8
1 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
Outputs/CRT/CRT.cpp
View File

@ -249,6 +249,27 @@ void CRT::advance_cycles(unsigned int number_of_cycles, unsigned int source_divi
// if this is horizontal retrace then advance the output line counter and bookend an output run
if(_output_device == CRT::Television)
{
Flywheel::SyncEvent honoured_event = (next_run_length == time_until_vertical_sync_event) ? next_vertical_sync_event : next_horizontal_sync_event;
bool needs_endpoint =
(honoured_event == Flywheel::SyncEvent::StartRetrace && _is_writing_composite_run) ||
(honoured_event == Flywheel::SyncEvent::EndRetrace && !_horizontal_flywheel->is_in_retrace() && !_vertical_flywheel->is_in_retrace());
if(needs_endpoint)
{
uint8_t *next_run = _run_builders[_run_write_pointer]->get_next_run(3);
output_position_x(0) = output_position_x(1) = output_position_x(2) = (uint16_t)_horizontal_flywheel->get_current_output_position();
output_position_y(0) = output_position_y(1) = output_position_y(2) = (uint16_t)(_vertical_flywheel->get_current_output_position() / _vertical_flywheel_output_divider);
output_timestamp(0) = output_timestamp(1) = output_timestamp(2) = _run_builders[_run_write_pointer]->duration;
output_tex_x(0) = output_tex_x(1) = output_tex_x(2) = tex_x;
output_tex_y(0) = output_tex_y(1) = output_tex_y(2) = tex_y;
output_lateral(0) = 0;
output_lateral(1) = _is_writing_composite_run ? 1 : 0;
output_lateral(2) = 1;
_is_writing_composite_run ^= true;
}
if(next_run_length == time_until_horizontal_sync_event && next_horizontal_sync_event == Flywheel::SyncEvent::EndRetrace)
{
_composite_src_output_y = (_composite_src_output_y + 1) % CRTIntermediateBufferHeight;