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Filled in shader class.

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This commit is contained in:
Thomas Harte 2016-02-07 19:21:22 -05:00
parent 4d0a218a57
commit 3a9ea66f8b
4 changed files with 91 additions and 50 deletions
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1
Outputs/CRT/CRT.hpp
View File

@ -212,6 +212,7 @@ class CRT {
ColourSpace _colour_space;
unsigned int _colour_cycle_numerator;
unsigned int _colour_cycle_denominator;
OutputDevice _output_device;
// properties directly derived from there
unsigned int _hsync_error_window; // the permitted window around the expected sync position in which a sync pulse will be recognised; calculated once at init

71
Outputs/CRT/CRTOpenGL.cpp
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@ -11,12 +11,12 @@
#include "OpenGL.hpp"
#include "TextureTarget.hpp"
#include "Shader.hpp"
using namespace Outputs;
struct CRT::OpenGLState {
GLuint vertexShader, fragmentShader;
GLuint shaderProgram;
OpenGL::Shader *shaderProgram;
GLuint arrayBuffer, vertexArray;
GLint positionAttribute;
@ -35,31 +35,11 @@ struct CRT::OpenGLState {
OpenGL::TextureTarget *colourTexture;
OpenGL::TextureTarget *filteredTexture;
GLuint compile_shader(const char *source, GLenum type)
OpenGLState() : shaderProgram(nullptr) {}
~OpenGLState()
{
GLuint shader = glCreateShader(type);
glShaderSource(shader, 1, &source, NULL);
glCompileShader(shader);
#if defined(DEBUG)
GLint isCompiled = 0;
glGetShaderiv(shader, GL_COMPILE_STATUS, &isCompiled);
if(isCompiled == GL_FALSE)
{
GLint logLength;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0) {
GLchar *log = (GLchar *)malloc((size_t)logLength);
glGetShaderInfoLog(shader, logLength, &logLength, log);
printf("Compile log:\n%s\n", log);
free(log);
}
}
#endif
return shader;
delete shaderProgram;
}
};
static GLenum formatForDepth(unsigned int depth)
@ -74,7 +54,6 @@ static GLenum formatForDepth(unsigned int depth)
}
}
void CRT::construct_openGL()
{
_openGL_state = nullptr;
@ -303,32 +282,20 @@ void CRT::prepare_shader()
char *vertex_shader = get_vertex_shader();
char *fragment_shader = get_fragment_shader();
_openGL_state->shaderProgram = glCreateProgram();
_openGL_state->vertexShader = _openGL_state->compile_shader(vertex_shader, GL_VERTEX_SHADER);
_openGL_state->fragmentShader = _openGL_state->compile_shader(fragment_shader, GL_FRAGMENT_SHADER);
_openGL_state->shaderProgram = new OpenGL::Shader(vertex_shader, fragment_shader);
_openGL_state->shaderProgram->bind();
delete vertex_shader;
delete fragment_shader;
_openGL_state->positionAttribute = _openGL_state->shaderProgram->get_attrib_location("position");
_openGL_state->textureCoordinatesAttribute = _openGL_state->shaderProgram->get_attrib_location("srcCoordinates");
_openGL_state->lateralAttribute = _openGL_state->shaderProgram->get_attrib_location("lateral");
_openGL_state->alphaUniform = _openGL_state->shaderProgram->get_uniform_location("alpha");
_openGL_state->textureSizeUniform = _openGL_state->shaderProgram->get_uniform_location("textureSize");
_openGL_state->windowSizeUniform = _openGL_state->shaderProgram->get_uniform_location("windowSize");
_openGL_state->boundsSizeUniform = _openGL_state->shaderProgram->get_uniform_location("boundsSize");
_openGL_state->boundsOriginUniform = _openGL_state->shaderProgram->get_uniform_location("boundsOrigin");
glAttachShader(_openGL_state->shaderProgram, _openGL_state->vertexShader);
glAttachShader(_openGL_state->shaderProgram, _openGL_state->fragmentShader);
glLinkProgram(_openGL_state->shaderProgram);
glUseProgram(_openGL_state->shaderProgram);
_openGL_state->positionAttribute = glGetAttribLocation(_openGL_state->shaderProgram, "position");
_openGL_state->textureCoordinatesAttribute = glGetAttribLocation(_openGL_state->shaderProgram, "srcCoordinates");
_openGL_state->lateralAttribute = glGetAttribLocation(_openGL_state->shaderProgram, "lateral");
_openGL_state->alphaUniform = glGetUniformLocation(_openGL_state->shaderProgram, "alpha");
_openGL_state->textureSizeUniform = glGetUniformLocation(_openGL_state->shaderProgram, "textureSize");
_openGL_state->windowSizeUniform = glGetUniformLocation(_openGL_state->shaderProgram, "windowSize");
_openGL_state->boundsSizeUniform = glGetUniformLocation(_openGL_state->shaderProgram, "boundsSize");
_openGL_state->boundsOriginUniform = glGetUniformLocation(_openGL_state->shaderProgram, "boundsOrigin");
GLint texIDUniform = glGetUniformLocation(_openGL_state->shaderProgram, "texID");
GLint shadowMaskTexIDUniform = glGetUniformLocation(_openGL_state->shaderProgram, "shadowMaskTexID");
// [self pushSizeUniforms];
GLint texIDUniform = _openGL_state->shaderProgram->get_uniform_location("texID");
GLint shadowMaskTexIDUniform = _openGL_state->shaderProgram->get_uniform_location("shadowMaskTexID");
glUniform1i(texIDUniform, 0);
glUniform1i(shadowMaskTexIDUniform, 1);
@ -342,3 +309,7 @@ void CRT::prepare_shader()
glVertexAttribPointer((GLuint)_openGL_state->textureCoordinatesAttribute, 2, GL_UNSIGNED_SHORT, GL_FALSE, vertexStride, (void *)kCRTVertexOffsetOfTexCoord);
glVertexAttribPointer((GLuint)_openGL_state->lateralAttribute, 1, GL_UNSIGNED_BYTE, GL_FALSE, vertexStride, (void *)kCRTVertexOffsetOfLateral);
}
void CRT::set_output_device(OutputDevice output_device)
{
}

61
Outputs/CRT/Shader.cpp
View File

@ -7,3 +7,64 @@
//
#include "Shader.hpp"
#include <stdlib.h>
#include <stdio.h>
using namespace OpenGL;
GLuint Shader::compile_shader(const char *source, GLenum type)
{
GLuint shader = glCreateShader(type);
glShaderSource(shader, 1, &source, NULL);
glCompileShader(shader);
#if defined(DEBUG)
GLint isCompiled = 0;
glGetShaderiv(shader, GL_COMPILE_STATUS, &isCompiled);
if(isCompiled == GL_FALSE)
{
GLint logLength;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0) {
GLchar *log = (GLchar *)malloc((size_t)logLength);
glGetShaderInfoLog(shader, logLength, &logLength, log);
printf("Compile log:\n%s\n", log);
free(log);
}
}
#endif
return shader;
}
Shader::Shader(const char *vertex_shader, const char *fragment_shader)
{
_shader_program = glCreateProgram();
GLuint vertex = compile_shader(vertex_shader, GL_VERTEX_SHADER);
GLuint fragment = compile_shader(fragment_shader, GL_FRAGMENT_SHADER);
glAttachShader(_shader_program, vertex);
glAttachShader(_shader_program, fragment);
glLinkProgram(_shader_program);
}
Shader::~Shader()
{
glDeleteProgram(_shader_program);
}
void Shader::bind()
{
glUseProgram(_shader_program);
}
GLint Shader::get_attrib_location(const char *name)
{
return glGetAttribLocation(_shader_program, name);
}
GLint Shader::get_uniform_location(const char *name)
{
return glGetUniformLocation(_shader_program, name);
}

8
Outputs/CRT/Shader.hpp
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@ -9,6 +9,8 @@
#ifndef Shader_hpp
#define Shader_hpp
#include "OpenGL.hpp"
namespace OpenGL {
class Shader {
public:
@ -16,6 +18,12 @@ namespace OpenGL {
~Shader();
void bind();
GLint get_attrib_location(const char *name);
GLint get_uniform_location(const char *name);
private:
GLuint compile_shader(const char *source, GLenum type);
GLuint _shader_program;
};
}