6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-11-22 12:33:29 +00:00
Code Issues Projects Releases Wiki Activity

Got through the requisite amount of invisible pain to get something onto my GL display. But clearly this is factored in entirely the wrong way. Work to do.

Browse Source
This commit is contained in:
Thomas Harte 2015-07-24 20:37:08 -04:00
parent 31338ef754
commit 5ab47e600a
1 changed files with 73 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
OSBindings/Mac/Clock Signal/Atari2600.mm
View File

@ -8,7 +8,31 @@
#import "Atari2600.h"
#import "Atari2600.hpp"
#import <OpenGL/gl.h>
#import <OpenGL/gl3.h>
const char *vertexShader =
"#version 150\n"
"\n"
"in vec2 position;\n"
"\n"
"out vec4 colour;\n"
"\n"
"void main (void)\n"
"{\n"
"colour = vec4(position, 0.0, 1.0);\n"
"gl_Position = vec4(position, 0.0, 1.0);\n"
"}\n";
const char *fragmentShader =
"#version 150\n"
"\n"
"in vec4 colour;\n"
"out vec4 fragColour;\n"
"\n"
"void main(void)\n"
"{\n"
"fragColour = colour;\n"
"}\n";
@interface CSAtari2600 (Callbacks)
- (void)crtDidEndFrame:(Outputs::CRTFrame *)frame;
@ -25,6 +49,11 @@ struct Atari2600CRTDelegate: public Outputs::CRT::CRTDelegate {
dispatch_queue_t _serialDispatchQueue;
Outputs::CRTFrame *_queuedFrame;
GLuint _vertexShader, _fragmentShader;
GLuint _shaderProgram;
GLuint _arrayBuffer, _vertexArray;
}
- (void)crtDidEndFrame:(Outputs::CRTFrame *)frame {
@ -41,12 +70,55 @@ struct Atari2600CRTDelegate: public Outputs::CRT::CRTDelegate {
});
}
- (GLuint)compileShader:(const char *)source type:(GLenum)type
{
GLuint shader = glCreateShader(type);
glShaderSource(shader, 1, &source, NULL);
glCompileShader(shader);
return shader;
}
- (void)draw {
if(!_shaderProgram)
{
_shaderProgram = glCreateProgram();
_vertexShader = [self compileShader:vertexShader type:GL_VERTEX_SHADER];
_fragmentShader = [self compileShader:fragmentShader type:GL_FRAGMENT_SHADER];
glAttachShader(_shaderProgram, _vertexShader);
glAttachShader(_shaderProgram, _fragmentShader);
glLinkProgram(_shaderProgram);
glGenVertexArrays(1, &_vertexArray);
glBindVertexArray(_vertexArray);
glGenBuffers(1, &_arrayBuffer);
glBindBuffer(GL_ARRAY_BUFFER, _arrayBuffer);
GLfloat vertices[] = {
0.0f, 0.0f,
0.5f, 0.0f,
0.5f, 0.6f,
0.0f, 0.5f
};
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
}
if(_queuedFrame)
{
glClearColor(1.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(_shaderProgram);
GLint position = glGetAttribLocation(_shaderProgram, "position");
glEnableVertexAttribArray(position);
glVertexAttribPointer(position, 2, GL_FLOAT, GL_FALSE, 0, (void *)0);
glDrawArrays(GL_LINES, 0, 4);
/* printf("\n\n===\n\n");
int c = 0;
for(int run = 0; run < _queuedFrame->number_of_runs; run++)