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Played in the margins with image retention.

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This commit is contained in:
Thomas Harte 2016-04-26 22:14:12 -04:00
parent 416c944f02
commit f6d58f1ce7
1 changed files with 5 additions and 5 deletions
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10
Outputs/CRT/Internals/CRTOpenGL.cpp
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@ -96,8 +96,8 @@ OpenGLOutputBuilder::OpenGLOutputBuilder(unsigned int buffer_depth) :
{
_buffer_builder = std::unique_ptr<CRTInputBufferBuilder>(new CRTInputBufferBuilder(buffer_depth));
glBlendFunc(GL_SRC_ALPHA, GL_CONSTANT_ALPHA);
glBlendColor(1.0f, 1.0f, 1.0f, 0.5f);
glBlendFunc(GL_SRC_ALPHA, GL_CONSTANT_COLOR);
glBlendColor(0.4f, 0.4f, 0.4f, 0.5f);
// Create intermediate textures and bind to slots 0, 1 and 2
glActiveTexture(composite_texture_unit);
@ -205,7 +205,7 @@ void OpenGLOutputBuilder::draw_frame(unsigned int output_width, unsigned int out
// 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
if(_buffer_builder->_next_write_y_position < _buffer_builder->last_uploaded_line)
if(_buffer_builder->_write_y_position < _buffer_builder->last_uploaded_line)
{
glTexSubImage2D( GL_TEXTURE_2D, 0,
0, (GLint)_buffer_builder->last_uploaded_line,
@ -215,7 +215,7 @@ void OpenGLOutputBuilder::draw_frame(unsigned int output_width, unsigned int out
_buffer_builder->last_uploaded_line = 0;
}
if(_buffer_builder->_next_write_y_position > _buffer_builder->last_uploaded_line)
if(_buffer_builder->_write_y_position > _buffer_builder->last_uploaded_line)
{
glTexSubImage2D( GL_TEXTURE_2D, 0,
0, (GLint)_buffer_builder->last_uploaded_line,
@ -649,7 +649,7 @@ char *OpenGLOutputBuilder::get_output_vertex_shader(const char *header)
"iSrcCoordinatesVarying = srcCoordinates;"
"srcCoordinatesVarying = vec2(srcCoordinates.x / textureSize.x, (srcCoordinates.y + 0.5) / textureSize.y);"
"float age = (timestampBase[int(lateralAndTimestampBaseOffset.y)] - timestamp) / ticksPerFrame;"
"alpha = 0.5;"//15.0*exp(-age*3.0);"
"alpha = 0.6;"//15.0*exp(-age*3.0);"
"vec2 floatingPosition = (position / positionConversion) + lateralAndTimestampBaseOffset.x * scanNormal;"
"vec2 mappedPosition = (floatingPosition - boundsOrigin) / boundsSize;"