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Switched to passing around std::strings rather than char *s, because they should be easier to capture.

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This commit is contained in:
Thomas Harte 2017-02-20 10:35:33 -05:00
parent d979a822ac
commit 6cb95b4fc5
7 changed files with 41 additions and 43 deletions
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4
Outputs/CRT/CRT.hpp
View File

@ -243,7 +243,7 @@ class CRT {
that evaluates to the composite signal level as a function of a source buffer, sampling location, colour
carrier phase and amplitude.
*/
inline void set_composite_sampling_function(const char *shader)
inline void set_composite_sampling_function(const std::string &shader)
{
openGL_output_builder_.set_composite_sampling_function(shader);
}
@ -261,7 +261,7 @@ class CRT {
* `vec2 coordinate` representing the source buffer location to sample from in the range [0, 1); and
* `vec2 icoordinate` representing the source buffer location to sample from as a pixel count, for easier multiple-pixels-per-byte unpacking.
*/
inline void set_rgb_sampling_function(const char *shader)
inline void set_rgb_sampling_function(const std::string &shader)
{
openGL_output_builder_.set_rgb_sampling_function(shader);
}

19
Outputs/CRT/Internals/CRTOpenGL.cpp
View File

@ -8,7 +8,6 @@
#include "CRT.hpp"
#include <cstdlib>
#include <cstring>
#include <cmath>
#include "CRTOpenGL.hpp"
@ -17,7 +16,8 @@
using namespace Outputs::CRT;
namespace {
namespace
{
static const GLenum source_data_texture_unit = GL_TEXTURE0;
static const GLenum pixel_accumulation_texture_unit = GL_TEXTURE1;
@ -31,8 +31,6 @@ namespace {
OpenGLOutputBuilder::OpenGLOutputBuilder(size_t bytes_per_pixel) :
visible_area_(Rect(0, 0, 1, 1)),
composite_src_output_y_(0),
composite_shader_(nullptr),
rgb_shader_(nullptr),
last_output_width_(0),
last_output_height_(0),
fence_(nullptr),
@ -78,9 +76,6 @@ OpenGLOutputBuilder::OpenGLOutputBuilder(size_t bytes_per_pixel) :
OpenGLOutputBuilder::~OpenGLOutputBuilder()
{
glDeleteVertexArrays(1, &output_vertex_array_);
free(composite_shader_);
free(rgb_shader_);
}
bool OpenGLOutputBuilder::get_is_television_output()
@ -275,17 +270,17 @@ void OpenGLOutputBuilder::set_openGL_context_will_change(bool should_delete_reso
output_mutex_.unlock();
}
void OpenGLOutputBuilder::set_composite_sampling_function(const char *shader)
void OpenGLOutputBuilder::set_composite_sampling_function(const std::string &shader)
{
std::lock_guard<std::mutex> lock_guard(output_mutex_);
composite_shader_ = strdup(shader);
composite_shader_ = shader;
reset_all_OpenGL_state();
}
void OpenGLOutputBuilder::set_rgb_sampling_function(const char *shader)
void OpenGLOutputBuilder::set_rgb_sampling_function(const std::string &shader)
{
std::lock_guard<std::mutex> lock_guard(output_mutex_);
rgb_shader_ = strdup(shader);
rgb_shader_ = shader;
reset_all_OpenGL_state();
}
@ -321,7 +316,7 @@ void OpenGLOutputBuilder::prepare_composite_input_shaders()
void OpenGLOutputBuilder::prepare_rgb_input_shaders()
{
if(rgb_shader_)
if(rgb_shader_.size())
{
rgb_input_shader_program_ = OpenGL::IntermediateShader::make_rgb_source_shader(rgb_shader_);
rgb_input_shader_program_->set_source_texture_unit(source_data_texture_unit);

8
Outputs/CRT/Internals/CRTOpenGL.hpp
View File

@ -47,8 +47,8 @@ class OpenGLOutputBuilder {
Rect visible_area_;
// Other things the caller may have provided.
char *composite_shader_;
char *rgb_shader_;
std::string composite_shader_;
std::string rgb_shader_;
// Methods used by the OpenGL code
void prepare_output_shader();
@ -148,8 +148,8 @@ class OpenGLOutputBuilder {
void draw_frame(unsigned int output_width, unsigned int output_height, bool only_if_dirty);
void set_openGL_context_will_change(bool should_delete_resources);
void set_composite_sampling_function(const char *shader);
void set_rgb_sampling_function(const char *shader);
void set_composite_sampling_function(const std::string &shader);
void set_rgb_sampling_function(const std::string &shader);
void set_output_device(OutputDevice output_device);
void set_timing(unsigned int input_frequency, unsigned int cycles_per_line, unsigned int height_of_display, unsigned int horizontal_scan_period, unsigned int vertical_scan_period, unsigned int vertical_period_divider);
};

20
Outputs/CRT/Internals/Shaders/IntermediateShader.cpp
View File

@ -26,7 +26,7 @@ namespace {
};
}
std::unique_ptr<IntermediateShader> IntermediateShader::make_shader(const char *fragment_shader, bool use_usampler, bool input_is_inputPosition)
std::unique_ptr<IntermediateShader> IntermediateShader::make_shader(const std::string &fragment_shader, bool use_usampler, bool input_is_inputPosition)
{
const char *sampler_type = use_usampler ? "usampler2D" : "sampler2D";
const char *input_variable = input_is_inputPosition ? "inputPosition" : "outputPosition";
@ -111,12 +111,13 @@ std::unique_ptr<IntermediateShader> IntermediateShader::make_shader(const char *
return shader;
}
std::unique_ptr<IntermediateShader> IntermediateShader::make_source_conversion_shader(const char *composite_shader, const char *rgb_shader)
std::unique_ptr<IntermediateShader> IntermediateShader::make_source_conversion_shader(const std::string &composite_shader, const std::string &rgb_shader)
{
char *composite_sample = (char *)composite_shader;
if(!composite_sample)
char *derived_composite_sample = nullptr;
const char *composite_sample = composite_shader.c_str();
if(!composite_shader.size())
{
asprintf(&composite_sample,
asprintf(&derived_composite_sample,
"%s\n"
"uniform mat3 rgbToLumaChroma;"
"float composite_sample(usampler2D texID, vec2 coordinate, vec2 iCoordinate, float phase, float amplitude)"
@ -126,7 +127,8 @@ std::unique_ptr<IntermediateShader> IntermediateShader::make_source_conversion_s
"vec2 quadrature = vec2(cos(phase), -sin(phase)) * amplitude;"
"return dot(lumaChromaColour, vec3(1.0 - amplitude, quadrature));"
"}",
rgb_shader);
rgb_shader.c_str());
composite_sample = derived_composite_sample;
}
char *fragment_shader;
@ -148,7 +150,7 @@ std::unique_ptr<IntermediateShader> IntermediateShader::make_source_conversion_s
"fragColour = vec4(composite_sample(texID, inputPositionsVarying[5], iInputPositionVarying, phaseAndAmplitudeVarying.x, phaseAndAmplitudeVarying.y));"
"}"
, composite_sample);
if(!composite_shader) free(composite_sample);
free(derived_composite_sample);
std::unique_ptr<IntermediateShader> shader = make_shader(fragment_shader, true, true);
free(fragment_shader);
@ -156,7 +158,7 @@ std::unique_ptr<IntermediateShader> IntermediateShader::make_source_conversion_s
return shader;
}
std::unique_ptr<IntermediateShader> IntermediateShader::make_rgb_source_shader(const char *rgb_shader)
std::unique_ptr<IntermediateShader> IntermediateShader::make_rgb_source_shader(const std::string &rgb_shader)
{
char *fragment_shader;
asprintf(&fragment_shader,
@ -176,7 +178,7 @@ std::unique_ptr<IntermediateShader> IntermediateShader::make_rgb_source_shader(c
"{"
"fragColour = rgb_sample(texID, inputPositionsVarying[5], iInputPositionVarying);"
"}"
, rgb_shader);
, rgb_shader.c_str());
std::unique_ptr<IntermediateShader> shader = make_shader(fragment_shader, true, true);
free(fragment_shader);

6
Outputs/CRT/Internals/Shaders/IntermediateShader.hpp
View File

@ -25,13 +25,13 @@ public:
converting them to single-channel composite values using @c composite_shader if supplied
or @c rgb_shader and a reference composite conversion if @c composite_shader is @c nullptr.
*/
static std::unique_ptr<IntermediateShader> make_source_conversion_shader(const char *composite_shader, const char *rgb_shader);
static std::unique_ptr<IntermediateShader> make_source_conversion_shader(const std::string &composite_shader, const std::string &rgb_shader);
/*!
Constructs and returns an intermediate shader that will take runs from the inputPositions,
converting them to RGB values using @c rgb_shader.
*/
static std::unique_ptr<IntermediateShader> make_rgb_source_shader(const char *rgb_shader);
static std::unique_ptr<IntermediateShader> make_rgb_source_shader(const std::string &rgb_shader);
/*!
Constructs and returns an intermediate shader that will read composite samples from the R channel,
@ -95,7 +95,7 @@ public:
void set_is_double_height(bool is_double_height, float input_offset = 0.0f, float output_offset = 0.0f);
private:
static std::unique_ptr<IntermediateShader> make_shader(const char *fragment_shader, bool use_usampler, bool input_is_inputPosition);
static std::unique_ptr<IntermediateShader> make_shader(const std::string &fragment_shader, bool use_usampler, bool input_is_inputPosition);
};
}

23
Outputs/CRT/Internals/Shaders/Shader.cpp
View File

@ -8,22 +8,23 @@
#include "Shader.hpp"
#include <stdlib.h>
#include <stdio.h>
using namespace OpenGL;
namespace {
namespace
{
Shader *bound_shader = nullptr;
}
GLuint Shader::compile_shader(const char *source, GLenum type)
GLuint Shader::compile_shader(const std::string &source, GLenum type)
{
GLuint shader = glCreateShader(type);
glShaderSource(shader, 1, &source, NULL);
const char *c_str = source.c_str();
glShaderSource(shader, 1, &c_str, NULL);
glCompileShader(shader);
#if defined(DEBUG)
#ifdef DEBUG
GLint isCompiled = 0;
glGetShaderiv(shader, GL_COMPILE_STATUS, &isCompiled);
if(isCompiled == GL_FALSE)
@ -31,10 +32,10 @@ GLuint Shader::compile_shader(const char *source, GLenum type)
GLint logLength;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &logLength);
if(logLength > 0) {
GLchar *log = (GLchar *)malloc((size_t)logLength);
GLchar *log = new GLchar[logLength];
glGetShaderInfoLog(shader, logLength, &logLength, log);
printf("Compile log:\n%s\n", log);
free(log);
delete[] log;
}
throw (type == GL_VERTEX_SHADER) ? VertexShaderCompilationError : FragmentShaderCompilationError;
@ -44,7 +45,7 @@ GLuint Shader::compile_shader(const char *source, GLenum type)
return shader;
}
Shader::Shader(const char *vertex_shader, const char *fragment_shader, const AttributeBinding *attribute_bindings)
Shader::Shader(const std::string &vertex_shader, const std::string &fragment_shader, const AttributeBinding *attribute_bindings)
{
shader_program_ = glCreateProgram();
GLuint vertex = compile_shader(vertex_shader, GL_VERTEX_SHADER);
@ -64,7 +65,7 @@ Shader::Shader(const char *vertex_shader, const char *fragment_shader, const Att
glLinkProgram(shader_program_);
#if defined(DEBUG)
#ifdef DEBUG
GLint didLink = 0;
glGetProgramiv(shader_program_, GL_LINK_STATUS, &didLink);
if(didLink == GL_FALSE)
@ -72,10 +73,10 @@ Shader::Shader(const char *vertex_shader, const char *fragment_shader, const Att
GLint logLength;
glGetProgramiv(shader_program_, GL_INFO_LOG_LENGTH, &logLength);
if(logLength > 0) {
GLchar *log = (GLchar *)malloc((size_t)logLength);
GLchar *log = new GLchar[logLength];
glGetProgramInfoLog(shader_program_, logLength, &logLength, log);
printf("Link log:\n%s\n", log);
free(log);
delete[] log;
}
throw ProgramLinkageError;
}

4
Outputs/CRT/Internals/Shaders/Shader.hpp
View File

@ -41,7 +41,7 @@ public:
@param fragment_shader The fragment shader source code.
@param attribute_bindings Either @c nullptr or an array terminated by an entry with a @c nullptr-name of attribute bindings.
*/
Shader(const char *vertex_shader, const char *fragment_shader, const AttributeBinding *attribute_bindings);
Shader(const std::string &vertex_shader, const std::string &fragment_shader, const AttributeBinding *attribute_bindings);
~Shader();
/*!
@ -106,7 +106,7 @@ public:
void set_uniform_matrix(const std::string &name, GLint size, GLsizei count, bool transpose, const GLfloat *values);
private:
GLuint compile_shader(const char *source, GLenum type);
GLuint compile_shader(const std::string &source, GLenum type);
GLuint shader_program_;
void flush_functions();