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Permits tweaking of PhaseLinkedLuminance8 sampling offset.

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This commit is contained in:
Thomas Harte 2018-11-29 16:29:28 -08:00
parent fd579a019b
commit a25470ee41
8 changed files with 42 additions and 28 deletions
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1
Machines/MasterSystem/MasterSystem.cpp
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@ -352,7 +352,6 @@ class ConcreteMachine:
}
}
void reset_all_keys(Inputs::Keyboard *) override {
}

2
Machines/Oric/Oric.cpp
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@ -530,7 +530,7 @@ template <Analyser::Static::Oric::Target::DiskInterface disk_interface> class Co
}
void set_display_type(Outputs::Display::DisplayType display_type) override {
// video_output_.set_display_type(display_type);
video_output_.set_display_type(display_type);
}
Configurable::SelectionSet get_accurate_selections() override {

35
Machines/Oric/Video.cpp
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@ -21,37 +21,26 @@ namespace {
const unsigned int PAL60Period = 262*64;
}
// crt_->set_rgb_sampling_function(
// "vec3 rgb_sample(usampler2D sampler, vec2 coordinate)"
// "{"
// "uint texValue = texture(sampler, coordinate).r;"
// "return vec3( uvec3(texValue) & uvec3(4u, 2u, 1u));"
// "}");
// crt_->set_composite_sampling_function(
// "float composite_sample(usampler2D sampler, vec2 coordinate, float phase, float amplitude)"
// "{"
// "uint texValue = uint(dot(texture(sampler, coordinate).rg, uvec2(1, 256)));"
// "uint iPhase = uint((phase + 3.141592654 + 0.39269908175) * 2.0 / 3.141592654) & 3u;"
// "texValue = (texValue >> (4u*(3u - iPhase))) & 15u;"
// "return (float(texValue) - 4.0) / 20.0;"
// "}"
// );
VideoOutput::VideoOutput(uint8_t *memory) :
ram_(memory),
crt_(64*6, 1, Outputs::Display::Type::PAL50, Outputs::Display::InputDataType::PhaseLinkedLuminance8),
crt_(64*6, 1, Outputs::Display::Type::PAL50, Outputs::Display::InputDataType::Red1Green1Blue1),
v_sync_start_position_(PAL50VSyncStartPosition), v_sync_end_position_(PAL50VSyncEndPosition),
counter_period_(PAL50Period) {
crt_.set_composite_function_type(Outputs::CRT::CRT::CompositeSourceType::DiscreteFourSamplesPerCycle, 1.0f / 8.0f);
set_display_type(Outputs::Display::DisplayType::CompositeColour);
crt_.set_visible_area(crt_.get_rect_for_area(54, 224, 16 * 6, 40 * 6, 4.0f / 3.0f));
crt_.set_phase_linked_luminance_offset(-1.0f / 8.0f);
display_type_ = Outputs::Display::DisplayType::RGB;
}
void VideoOutput::set_display_type(Outputs::Display::DisplayType display_type) {
display_type_ = display_type;
crt_.set_display_type(display_type);
if(display_type_ != display_type) {
display_type_ = display_type;
crt_.set_display_type(display_type);
crt_.set_input_data_type(
(display_type == Outputs::Display::DisplayType::RGB) ?
Outputs::Display::InputDataType::Red1Green1Blue1 :
Outputs::Display::InputDataType::PhaseLinkedLuminance8
);
}
}
void VideoOutput::set_scan_target(Outputs::Display::ScanTarget *scan_target) {

10
Outputs/CRT/CRT.cpp
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@ -88,6 +88,16 @@ void CRT::set_display_type(Outputs::Display::DisplayType display_type) {
scan_target_->set_modals(scan_target_modals_);
}
void CRT::set_phase_linked_luminance_offset(float offset) {
scan_target_modals_.input_data_tweaks.phase_linked_luminance_offset = offset;
scan_target_->set_modals(scan_target_modals_);
}
void CRT::set_input_data_type(Outputs::Display::InputDataType input_data_type) {
scan_target_modals_.input_data_type = input_data_type;
scan_target_->set_modals(scan_target_modals_);
}
void CRT::set_new_display_type(int cycles_per_line, Outputs::Display::Type displayType) {
switch(displayType) {
case Outputs::Display::Type::PAL50:

6
Outputs/CRT/CRT.hpp
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@ -265,6 +265,12 @@ class CRT {
/*! Sets the display type that will be nominated to the scan target. */
void set_display_type(Outputs::Display::DisplayType);
/*! Sets the offset to apply to phase when using the PhaseLinkedLuminance8 input data type. */
void set_phase_linked_luminance_offset(float);
/*! Sets the input data type. */
void set_input_data_type(Outputs::Display::InputDataType);
};
}

3
Outputs/OpenGL/ScanTarget.cpp
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@ -100,8 +100,6 @@ ScanTarget::~ScanTarget() {
}
void ScanTarget::set_modals(Modals modals) {
modals.display_type = DisplayType::CompositeColour;
modals_ = modals;
const auto data_type_size = Outputs::Display::size_for_data_type(modals.input_data_type);
@ -213,6 +211,7 @@ void Outputs::Display::OpenGL::ScanTarget::set_uniforms(ShaderType type, Shader
target.set_uniform("rowHeight", GLfloat(1.05f / modals_.expected_vertical_lines));
target.set_uniform("scale", GLfloat(modals_.output_scale.x), GLfloat(modals_.output_scale.y));
target.set_uniform("processingWidth", GLfloat(processing_width_) / 2048.0f);
target.set_uniform("phaseOffset", GLfloat(modals_.input_data_tweaks.phase_linked_luminance_offset));
}
Outputs::Display::ScanTarget::Scan *ScanTarget::begin_scan() {

3
Outputs/OpenGL/ScanTargetGLSLFragments.cpp
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@ -247,6 +247,7 @@ std::unique_ptr<Shader> ScanTarget::input_shader(InputDataType input_data_type,
"uniform mat3 lumaChromaToRGB;"
"uniform mat3 rgbToLumaChroma;"
"uniform usampler2D textureName;"
"uniform float phaseOffset;"
"void main(void) {";
@ -269,7 +270,7 @@ std::unique_ptr<Shader> ScanTarget::input_shader(InputDataType input_data_type,
case InputDataType::PhaseLinkedLuminance8:
computed_display_type = DisplayType::CompositeMonochrome;
fragment_shader +=
"uint iPhase = uint(compositeAngle * 2.0 / 3.141592654) & 3u;"
"uint iPhase = uint((compositeAngle * 2.0 / 3.141592654) + phaseOffset*4.0) & 3u;"
"fragColour = vec3(texture(textureName, textureCoordinate)[iPhase] / 255.0);";
break;

10
Outputs/ScanTarget.hpp
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@ -142,6 +142,13 @@ struct ScanTarget {
/// Describes the format of input data.
InputDataType input_data_type;
struct InputDataTweaks {
/// If using the PhaseLinkedLuminance8 data type, this value provides an offset
/// to add to phase before indexing the supplied luminances.
float phase_linked_luminance_offset = 0.0f;
} input_data_tweaks;
/// Describes the type of display that the data is being shown on.
DisplayType display_type = DisplayType::SVideo;
@ -172,6 +179,9 @@ struct ScanTarget {
/// Describes the usual gamma of the output device these scans would appear on.
float intended_gamma = 2.2f;
/// Provides a brightness multiplier for the display output.
float brightness = 1.0f;
/// Specifies the range of values that will be output for x and y coordinates.
struct {
uint16_t x, y;