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No doubt still imperfect but killed the repeated whole texture uploads.

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This commit is contained in:
Thomas Harte 2016-02-13 23:55:02 -05:00
parent 697e50c0cc
commit 752db78431
1 changed files with 19 additions and 10 deletions
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29
Outputs/CRT/CRTOpenGL.cpp
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@ -110,16 +110,25 @@ void CRT::draw_frame(unsigned int output_width, unsigned int output_height, bool
// upload more source pixel data if any; we'll always resubmit the last line submitted last
// time as it may have had extra data appended to it
GLenum format = formatForDepth(_buffer_builder->buffers[0].bytes_per_pixel);
// if(_buffer_builder->_next_write_y_position > _buffer_builder->last_uploaded_line)
// {
// glTexSubImage2D(GL_TEXTURE_2D, 0, 0, (GLint)_buffer_builder->last_uploaded_line, CRTInputBufferBuilderWidth, CRTInputBufferBuilderHeight, format, GL_UNSIGNED_BYTE, &_buffer_builder->buffers[0].data[_buffer_builder->last_uploaded_line * CRTInputBufferBuilderWidth * _buffer_builder->buffers[0].bytes_per_pixel]);
// _buffer_builder->last_uploaded_line = _buffer_builder->_next_write_y_position;
// }
// else
// {
glTexImage2D(GL_TEXTURE_2D, 0, (GLint)format, CRTInputBufferBuilderWidth, CRTInputBufferBuilderHeight, 0, format, GL_UNSIGNED_BYTE, _buffer_builder->buffers[0].data);
_buffer_builder->last_uploaded_line = 0;
// }
if(_buffer_builder->_next_write_y_position < _buffer_builder->last_uploaded_line)
{
glTexSubImage2D(GL_TEXTURE_2D, 0,
0, (GLint)_buffer_builder->last_uploaded_line,
CRTInputBufferBuilderWidth, (GLint)(CRTInputBufferBuilderHeight - _buffer_builder->last_uploaded_line),
format, GL_UNSIGNED_BYTE,
&_buffer_builder->buffers[0].data[_buffer_builder->last_uploaded_line * CRTInputBufferBuilderWidth * _buffer_builder->buffers[0].bytes_per_pixel]);
_buffer_builder->last_uploaded_line = 0;
}
if(_buffer_builder->_next_write_y_position > _buffer_builder->last_uploaded_line)
{
glTexSubImage2D(GL_TEXTURE_2D, 0,
0, (GLint)_buffer_builder->last_uploaded_line,
CRTInputBufferBuilderWidth, (GLint)(1 + _buffer_builder->_next_write_y_position - _buffer_builder->last_uploaded_line),
format, GL_UNSIGNED_BYTE,
&_buffer_builder->buffers[0].data[_buffer_builder->last_uploaded_line * CRTInputBufferBuilderWidth * _buffer_builder->buffers[0].bytes_per_pixel]);
_buffer_builder->last_uploaded_line = _buffer_builder->_next_write_y_position;
}
// draw all sitting frames
int run = _run_write_pointer;