Joshua Moerman
9 years ago
commit
bb39483eee
12 changed files with 13485 additions and 0 deletions
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*.xcworkspace |
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xcuserdata |
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#version 330 |
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uniform float rotation; |
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in vec2 pos; |
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in vec2 start; |
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out vec4 fragColor; |
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void main(){ |
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vec2 z = start; |
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int i = 0; |
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for (i = 0; i < 30; i++) { |
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vec2 zsq = z*z; |
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if(zsq.x + zsq.y > 16.0) break; |
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float t = zsq.x - zsq.y + pos.x; |
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z.y = 2.0*z.x*z.y + pos.y; |
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z.x = t; |
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} |
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fragColor = vec4(float(i) / 30.0); |
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fragColor.bg = 0.5 * sin(z) + 0.5; |
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} |
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#version 330 |
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uniform float rotation; |
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in vec4 position; |
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in vec4 color; |
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out vec2 pos; |
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out vec2 start; |
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void main(){ |
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pos = position.xy; |
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pos.x -= 0.5; |
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start = sqrt(1.0 + 0.01 * rotation) * 0.3 * sin(vec2(0.1, 0.1337) * rotation); |
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gl_Position = position; |
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} |
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kernel void square(global float* input, size_t width, global float* output){ |
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size_t x = get_global_id(0); |
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size_t y = get_global_id(1); |
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float i = 2.0 * (input[x + width*y] - 0.5); |
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output[x + width*y] = 0.5 + 0.5*sin((1.0 - i) * sin(i*i + 6.2*float(x)/width) + cos(1.0/i + 6.2*float(y)/width)); |
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} |
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//
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// NSGLWrapper.hpp
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// XcodeOpenCL
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//
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// Created by Joshua Moerman on 13/04/14.
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//
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//
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#pragma once |
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#include <memory> |
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#include <functional> |
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#include <OpenGL/OpenGL.h> |
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#include <CoreVideo/CVDisplayLink.h> |
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struct GLContext { |
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GLContext(); |
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~GLContext(); |
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void set_as_current_context() const; |
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void lock(); |
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void unlock(); |
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CGLContextObj ctx{}; |
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CGLPixelFormatObj pix{}; |
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}; |
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struct CVDisplayLinky { |
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CVDisplayLinky(GLContext const &); |
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~CVDisplayLinky(); |
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void start(); |
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void stop(); |
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std::function<void()> callback; |
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CVDisplayLinkRef displayLink; |
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}; |
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// |
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// NSGLWrapper.mm |
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// XcodeOpenCL |
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// |
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// Created by Joshua Moerman on 13/04/14. |
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// |
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// |
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#include "NSGLWrapper.hpp" |
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#include <iostream> |
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#include <stdexcept> |
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#import <Cocoa/Cocoa.h> |
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#import <OpenGL/OpenGL.h> |
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static void check_cgl(CGLError e) { |
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if(e != kCGLNoError){ |
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throw std::runtime_error(CGLErrorString(e)); |
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} |
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} |
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GLContext::GLContext() { |
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GLint npix{}; |
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const CGLPixelFormatAttribute attributes[]{ |
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kCGLPFADoubleBuffer, |
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kCGLPFADepthSize, static_cast<CGLPixelFormatAttribute>(24), |
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kCGLPFAOpenGLProfile, static_cast<CGLPixelFormatAttribute>(kCGLOGLPVersion_3_2_Core), |
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static_cast<CGLPixelFormatAttribute>(0) |
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}; |
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check_cgl(CGLChoosePixelFormat(attributes, &pix, &npix)); |
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check_cgl(CGLCreateContext(pix, 0, &ctx)); |
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GLint swap_interval = 1; |
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check_cgl(CGLSetParameter(ctx, kCGLCPSwapInterval, &swap_interval)); |
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set_as_current_context(); |
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} |
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GLContext::~GLContext() { |
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CGLReleaseContext(ctx); |
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CGLReleasePixelFormat(pix); |
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} |
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void GLContext::set_as_current_context() const { |
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check_cgl(CGLSetCurrentContext(ctx)); |
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} |
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void GLContext::lock() { |
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check_cgl(CGLLockContext(ctx)); |
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} |
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void GLContext::unlock() { |
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check_cgl(CGLUnlockContext(ctx)); |
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} |
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static void check_cv(CVReturn r) { |
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if(r != kCVReturnSuccess){ |
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throw std::runtime_error("Some CV display link issue"); |
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} |
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} |
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static CVReturn CVDisplayLinkyInvokeCallback(CVDisplayLinkRef displayLink, const CVTimeStamp* now, const CVTimeStamp* outputTime, CVOptionFlags flagsIn, CVOptionFlags* flagsOut, void* displayLinkContext) { |
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if(!displayLinkContext){ |
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throw std::runtime_error("There is no context in the display link"); |
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} |
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auto& foo = *(CVDisplayLinky*)displayLinkContext; |
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if(foo.callback){ |
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foo.callback(); |
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} |
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return kCVReturnSuccess; |
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} |
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CVDisplayLinky::CVDisplayLinky(GLContext const & c) { |
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check_cv(CVDisplayLinkCreateWithActiveCGDisplays(&displayLink)); |
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check_cv(CVDisplayLinkSetOutputCallback(displayLink, &CVDisplayLinkyInvokeCallback, this)); |
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check_cv(CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext(displayLink, c.ctx, c.pix)); |
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} |
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CVDisplayLinky::~CVDisplayLinky() { |
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stop(); |
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CVDisplayLinkRelease(displayLink); |
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} |
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void CVDisplayLinky::start() { |
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check_cv(CVDisplayLinkStart(displayLink)); |
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} |
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void CVDisplayLinky::stop() { |
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check_cv(CVDisplayLinkStop(displayLink)); |
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} |
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//
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// NSWrapper.hpp
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// XcodeOpenCL
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//
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// Created by Joshua Moerman on 13/04/14.
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//
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//
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#pragma once |
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#include <memory> |
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#include <functional> |
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#include <CoreGraphics/CoreGraphics.h> |
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struct GLContext; |
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struct ContextParameters{ |
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GLContext & context; |
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}; |
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struct GLViewFunctionality { |
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// All three will only be called with the current gl context already set
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// May be called from different threads
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std::function<void(ContextParameters)> initialize_callback; |
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std::function<void(ContextParameters)> draw_callback; |
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std::function<void(ContextParameters, CGFloat, CGFloat)> resize_callback; |
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}; |
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// returns a GLViewFunctionality with only its draw function set.
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GLViewFunctionality simple_draw(std::function<void()> f); |
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struct NSAppWrapper { |
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NSAppWrapper(); |
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~NSAppWrapper(); |
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void run(); |
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void create_window(GLViewFunctionality const &); |
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std::unique_ptr<struct NSAppWrapperImpl> impl; |
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}; |
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// |
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// NSWrapper.mm |
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// XcodeOpenCL |
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// |
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// Created by Joshua Moerman on 13/04/14. |
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// |
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// |
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#include "NSWrapper.hpp" |
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#include "NSGLWrapper.hpp" |
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#include <vector> |
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#import <Cocoa/Cocoa.h> |
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#import <GLKit/GLKit.h> |
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GLViewFunctionality simple_draw(std::function<void()> f){ |
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return {nullptr, [f](ContextParameters){ f(); }, nullptr}; |
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} |
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@interface GLView : NSOpenGLView |
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// All three will only be called with the current gl context already set |
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// May be called from different threads (but the properties are atomic by default) |
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@property GLViewFunctionality functionality; |
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@end |
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struct NSAppWrapperImpl { |
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NSAppWrapperImpl() { |
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app = [NSApplication sharedApplication]; |
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app.activationPolicy = NSApplicationActivationPolicyRegular; |
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appName = [[NSProcessInfo processInfo] processName]; |
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} |
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void set_up_menu() { |
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NSMenu* appMenu = [NSMenu new]; |
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[appMenu addItemWithTitle:[@"Quit " stringByAppendingString:appName] |
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action:@selector(terminate:) |
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keyEquivalent:@"q"]; |
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NSMenuItem * menuItem = [NSMenuItem new]; |
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menuItem.submenu = appMenu; |
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app.mainMenu = [NSMenu new]; |
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[app.mainMenu addItem:menuItem]; |
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} |
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void create_window(GLViewFunctionality const & f) { |
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NSWindow * window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 500, 500) |
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styleMask:NSTitledWindowMask | NSResizableWindowMask | NSMiniaturizableWindowMask |
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backing:NSBackingStoreBuffered |
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defer:YES]; |
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window.title = appName; |
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window.collectionBehavior |= NSWindowCollectionBehaviorFullScreenPrimary; |
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[window center]; |
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[window makeKeyAndOrderFront:nil]; |
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NSRect frame = [window contentRectForFrameRect:window.frame]; |
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frame.origin = {0, 0}; |
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GLView * view = [[GLView alloc] initWithFrame:frame]; |
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view.functionality = f; |
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window.contentView = view; |
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windows.push_back(window); |
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} |
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void run() { |
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[app run]; |
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} |
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NSApplication * app; |
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std::vector<NSWindow *> windows; |
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NSString * appName; |
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}; |
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NSAppWrapper::NSAppWrapper() |
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: impl(new NSAppWrapperImpl){ |
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impl->set_up_menu(); |
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} |
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NSAppWrapper::~NSAppWrapper() = default; |
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void NSAppWrapper::run() { |
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impl->run(); |
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} |
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void NSAppWrapper::create_window(GLViewFunctionality const & f){ |
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impl->create_window(f); |
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} |
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/* |
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Some general notes about GLView: |
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- It is in a multithreaded context. The CVDisplayLink will run on a diferent thread than the main thread. However the main thread *will also draw* (eg. when reshaping, to avoid flickering). So there are some locks here and there. |
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- Hopefully the C++ objects are destructed nicely |
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- There is syntax for the constructor, so I used unique_ptr... |
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*/ |
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@implementation GLView { |
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std::unique_ptr<GLContext> context; |
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std::unique_ptr<CVDisplayLinky> linky; |
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} |
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@synthesize functionality; |
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- (id) initWithFrame:(NSRect)frameRect { |
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if(self = [super initWithFrame:frameRect]){ |
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context = std::unique_ptr<GLContext>(new GLContext); |
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self.pixelFormat = [[NSOpenGLPixelFormat alloc] initWithCGLPixelFormatObj: context->pix]; |
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self.openGLContext = [[NSOpenGLContext alloc] initWithCGLContextObj: context->ctx]; |
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self.wantsBestResolutionOpenGLSurface = YES; // Opt-in for retina |
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} |
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return self; |
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} |
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- (void) prepareOpenGL{ |
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[super prepareOpenGL]; |
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context->set_as_current_context(); |
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// Synchronize buffer swaps with vertical refresh rate |
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GLint swapInt = 1; |
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[[self openGLContext] setValues:&swapInt forParameter:NSOpenGLCPSwapInterval]; |
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if(functionality.initialize_callback){ |
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functionality.initialize_callback({*context}); |
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} |
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// Create a display link capable of being used with all active displays |
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linky = std::unique_ptr<CVDisplayLinky>(new CVDisplayLinky(*context)); |
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linky->callback = [=]{ |
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// will be called in a different thread => need new autoreleasepool |
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@autoreleasepool { |
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[self drawView]; |
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} |
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}; |
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linky->start(); |
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// Register to be notified when the window closes so we can stop the displaylink |
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[[NSNotificationCenter defaultCenter] addObserver:self |
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selector:@selector(windowWillClose:) |
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name:NSWindowWillCloseNotification |
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object:[self window]]; |
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} |
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- (void) windowWillClose:(NSNotification*)notification{ |
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// The default OpenGL render buffers will be destroyed. If display link |
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// continues to fire without renderbuffers, OpenGL draw calls will set errors. |
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linky->stop(); |
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} |
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- (void) reshape{ |
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[super reshape]; |
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context->lock(); |
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// [NSView convertRectToBacking] converts point sizes to pixel sizes. |
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// viewRectPixels will be larger (2x) than viewRectPoints for retina displays. |
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// viewRectPixels will be the same as viewRectPoints for non-retina displays |
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NSRect viewRectPixels = [self convertRectToBacking:self.bounds]; |
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if(functionality.resize_callback){ |
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functionality.resize_callback({*context}, viewRectPixels.size.width, viewRectPixels.size.height); |
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} |
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context->unlock(); |
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} |
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- (void)renewGState{ |
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// Called whenever graphics state updated (such as window resize) |
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// OpenGL rendering is not synchronous with other rendering on the OSX. |
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// Therefore, call disableScreenUpdatesUntilFlush so the window server |
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// doesn't render non-OpenGL content in the window asynchronously from |
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// OpenGL content, which could cause flickering. (non-OpenGL content |
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// includes the title bar and drawing done by the app with other APIs) |
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[[self window] disableScreenUpdatesUntilFlush]; |
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[super renewGState]; |
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} |
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- (void) drawRect: (NSRect) theRect{ |
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[self drawView]; |
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} |
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- (void) drawView{ |
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context->set_as_current_context(); |
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// We draw on a secondary thread through the display link |
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// When resizing the view, -reshape is called automatically on the main |
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// thread. Add a mutex around to avoid the threads accessing the context |
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// simultaneously when resizing |
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context->lock(); |
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NSRect viewRectPixels = [self convertRectToBacking:self.bounds]; |
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glBindFramebuffer(GL_FRAMEBUFFER, 0); |
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glViewport(0, 0, (int)viewRectPixels.size.width, (int)viewRectPixels.size.height); |
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if(functionality.draw_callback){ |
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functionality.draw_callback({*context}); |
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} |
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CGLFlushDrawable(context->ctx); |
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context->unlock(); |
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} |
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@end |
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@ -0,0 +1,297 @@ |
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// !$*UTF8*$! |
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{ |
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archiveVersion = 1; |
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classes = { |
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}; |
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objectVersion = 46; |
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objects = { |
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
428B574B18E58D8800A6D212 /* OpenCL.framework in Frameworks */, |
|||
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|||
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|||
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|||
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|||
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|||
|
|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
428B574C18E5C2D500A6D212 /* cl.hpp */, |
|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
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|||
compatibilityVersion = "Xcode 3.2"; |
|||
developmentRegion = English; |
|||
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|||
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projectRoot = ""; |
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targets = ( |
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428B573B18E584DB00A6D212 /* main */, |
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|||
|
|||
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428B573818E584DB00A6D212 /* Sources */ = { |
|||
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|||
files = ( |
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42F63BBC18FAB2C500F2C81A /* NSGLWrapper.mm in Sources */, |
|||
42F63BB918FAAE4F00F2C81A /* NSWrapper.mm in Sources */, |
|||
428B574618E584F200A6D212 /* main.cpp in Sources */, |
|||
42F63BCA18FB17FE00F2C81A /* Kernel.cl in Sources */, |
|||
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|||
runOnlyForDeploymentPostprocessing = 0; |
|||
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|||
/* End PBXSourcesBuildPhase section */ |
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|
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/* Begin XCBuildConfiguration section */ |
|||
428B573318E5844100A6D212 /* Debug */ = { |
|||
isa = XCBuildConfiguration; |
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buildSettings = { |
|||
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|||
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|||
HEADER_SEARCH_PATHS = ( |
|||
"$(inherited)", |
|||
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include, |
|||
/usr/local/include, |
|||
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|||
LIBRARY_SEARCH_PATHS = /usr/local/lib; |
|||
OPENCL_FAST_RELAXED_MATH = YES; |
|||
OPENCL_MAD_ENABLE = YES; |
|||
OPENCL_OPTIMIZATION_LEVEL = 3; |
|||
RUN_CLANG_STATIC_ANALYZER = YES; |
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}; |
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428B573418E5844100A6D212 /* Release */ = { |
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buildSettings = { |
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"$(inherited)", |
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/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include, |
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/usr/local/include, |
|||
); |
|||
LIBRARY_SEARCH_PATHS = /usr/local/lib; |
|||
OPENCL_FAST_RELAXED_MATH = YES; |
|||
OPENCL_MAD_ENABLE = YES; |
|||
OPENCL_OPTIMIZATION_LEVEL = 3; |
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RUN_CLANG_STATIC_ANALYZER = YES; |
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}; |
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name = Release; |
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}; |
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428B574418E584DB00A6D212 /* Debug */ = { |
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buildSettings = { |
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CLANG_ENABLE_OBJC_ARC = YES; |
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CLANG_WARN_BOOL_CONVERSION = YES; |
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CLANG_WARN_CONSTANT_CONVERSION = YES; |
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CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR; |
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CLANG_WARN_EMPTY_BODY = YES; |
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CLANG_WARN_ENUM_CONVERSION = YES; |
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CLANG_WARN_INT_CONVERSION = YES; |
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CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR; |
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CLANG_WARN__DUPLICATE_METHOD_MATCH = YES; |
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GCC_OPTIMIZATION_LEVEL = 0; |
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"DEBUG=1", |
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"$(inherited)", |
|||
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GCC_WARN_64_TO_32_BIT_CONVERSION = YES; |
|||
GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; |
|||
GCC_WARN_UNDECLARED_SELECTOR = YES; |
|||
GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; |
|||
GCC_WARN_UNUSED_FUNCTION = YES; |
|||
GCC_WARN_UNUSED_VARIABLE = YES; |
|||
MACOSX_DEPLOYMENT_TARGET = 10.10; |
|||
ONLY_ACTIVE_ARCH = YES; |
|||
PRODUCT_NAME = "$(TARGET_NAME)"; |
|||
SDKROOT = macosx; |
|||
}; |
|||
name = Debug; |
|||
}; |
|||
428B574518E584DB00A6D212 /* Release */ = { |
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isa = XCBuildConfiguration; |
|||
buildSettings = { |
|||
CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x"; |
|||
CLANG_CXX_LIBRARY = "libc++"; |
|||
CLANG_ENABLE_OBJC_ARC = YES; |
|||
CLANG_WARN_BOOL_CONVERSION = YES; |
|||
CLANG_WARN_CONSTANT_CONVERSION = YES; |
|||
CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR; |
|||
CLANG_WARN_EMPTY_BODY = YES; |
|||
CLANG_WARN_ENUM_CONVERSION = YES; |
|||
CLANG_WARN_INT_CONVERSION = YES; |
|||
CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR; |
|||
CLANG_WARN__DUPLICATE_METHOD_MATCH = YES; |
|||
COPY_PHASE_STRIP = YES; |
|||
DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym"; |
|||
ENABLE_NS_ASSERTIONS = NO; |
|||
GCC_WARN_64_TO_32_BIT_CONVERSION = YES; |
|||
GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; |
|||
GCC_WARN_UNDECLARED_SELECTOR = YES; |
|||
GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; |
|||
GCC_WARN_UNUSED_FUNCTION = YES; |
|||
GCC_WARN_UNUSED_VARIABLE = YES; |
|||
MACOSX_DEPLOYMENT_TARGET = 10.10; |
|||
PRODUCT_NAME = "$(TARGET_NAME)"; |
|||
SDKROOT = macosx; |
|||
}; |
|||
name = Release; |
|||
}; |
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/* End XCBuildConfiguration section */ |
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|
|||
/* Begin XCConfigurationList section */ |
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428B573218E5844100A6D212 /* Build configuration list for PBXProject "XcodeOpenCL" */ = { |
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buildConfigurations = ( |
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428B573318E5844100A6D212 /* Debug */, |
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428B573418E5844100A6D212 /* Release */, |
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defaultConfigurationName = Release; |
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428B574318E584DB00A6D212 /* Build configuration list for PBXNativeTarget "main" */ = { |
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buildConfigurations = ( |
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428B574418E584DB00A6D212 /* Debug */, |
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428B574518E584DB00A6D212 /* Release */, |
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defaultConfigurationName = Release; |
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/* End XCConfigurationList section */ |
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rootObject = 428B572F18E5844100A6D212 /* Project object */; |
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} |
|||
File diff suppressed because it is too large
@ -0,0 +1,76 @@ |
|||
//
|
|||
// cl2.hpp
|
|||
// XcodeOpenCL
|
|||
//
|
|||
// Created by Joshua Moerman on 28/03/14.
|
|||
//
|
|||
//
|
|||
|
|||
#ifndef XcodeOpenCL_cl2_hpp |
|||
#define XcodeOpenCL_cl2_hpp |
|||
|
|||
#include "cl.hpp" |
|||
#include <cassert> |
|||
#include <iostream> |
|||
|
|||
// debugging tool
|
|||
static void check(cl_int err){ |
|||
assert(err == CL_SUCCESS); |
|||
} |
|||
|
|||
// simple variadic wrapper for kernels/arguments (1D)
|
|||
struct KernelOp{ |
|||
KernelOp(const cl::Program& program, const char* name, cl_int* err) |
|||
: kernel(program, name, err) |
|||
{} |
|||
|
|||
template <typename... Args> |
|||
cl_int operator()(cl::CommandQueue & queue, size_t W, size_t H, Args&&... args){ |
|||
return apply(queue, W, H, 0, std::forward<Args>(args)...); |
|||
} |
|||
|
|||
private: |
|||
cl::Kernel kernel; |
|||
|
|||
template <typename T, typename... Args> |
|||
cl_int apply(cl::CommandQueue & queue, size_t W, size_t H, cl_uint n, T&& t, Args&&... args){ |
|||
check(kernel.setArg(n, t)); |
|||
return apply(queue, W, H, n+1, std::forward<Args>(args)...); |
|||
} |
|||
|
|||
cl_int apply(cl::CommandQueue & queue, size_t W, size_t H, size_t){ |
|||
return queue.enqueueNDRangeKernel(kernel, cl::NullRange, cl::NDRange(W, H), cl::NullRange); |
|||
} |
|||
}; |
|||
|
|||
// We need to put the op<<'s in namespace cl (ADL)
|
|||
namespace cl { |
|||
std::ostream& operator<<(std::ostream& out, Platform const & platform){ |
|||
return out << platform.getInfo<CL_PLATFORM_NAME>() << ", " << platform.getInfo<CL_PLATFORM_VERSION>(); |
|||
} |
|||
|
|||
std::ostream& operator<<(std::ostream& out, Device const & device){ |
|||
out << device.getInfo<CL_DEVICE_NAME>() << ", " << device.getInfo<CL_DEVICE_VERSION>() << ", " << device.getInfo<CL_DRIVER_VERSION>(); |
|||
return out; |
|||
} |
|||
|
|||
std::ostream& operator<<(std::ostream& out, Context const & context){ |
|||
Platform p; |
|||
context.getInfo(CL_CONTEXT_PLATFORM, &p); |
|||
out << "Platform:\t" << p << '\n'; |
|||
|
|||
auto devices = context.getInfo<CL_CONTEXT_DEVICES>(); |
|||
out << "Number of devices:\t" << devices.size() << '\n'; |
|||
int i = 0; |
|||
for(auto&& d : devices){ |
|||
out << ++i << "\t" << d << '\n'; |
|||
} |
|||
return out; |
|||
} |
|||
|
|||
std::ostream& operator<<(std::ostream& out, Program const & program){ |
|||
return out << "Kernels in program:\t" << program.getInfo<CL_PROGRAM_KERNEL_NAMES>(); |
|||
} |
|||
} |
|||
|
|||
#endif |
|||
@ -0,0 +1,215 @@ |
|||
//
|
|||
// main.cpp
|
|||
// XcodeOpenCL
|
|||
//
|
|||
// Created by Joshua Moerman on 28/03/14.
|
|||
//
|
|||
//
|
|||
|
|||
#include "cl2.hpp" |
|||
|
|||
#include "NSWrapper.hpp" |
|||
#include "../../CodeTA/ImageStreams/include/png.hpp" |
|||
|
|||
#include <OpenGL/gl3.h> |
|||
|
|||
#include <vector> |
|||
#include <iostream> |
|||
#include <fstream> |
|||
#include <sstream> |
|||
#include <cassert> |
|||
#include <cmath> |
|||
|
|||
using namespace std; |
|||
|
|||
#define BUFFER_OFFSET(i) ((char *)NULL + (i)) |
|||
|
|||
const GLfloat quad[] = { |
|||
// x y z, r g b
|
|||
1, -1, 0, 1, 0, 0, |
|||
-1, -1, 0, 0, 1, 0, |
|||
1, 1, 0, 0, 0, 1, |
|||
-1, 1, 0, 1, 1, 1 |
|||
}; |
|||
|
|||
static void check_shader(GLuint s){ |
|||
GLint logLength; |
|||
glGetShaderiv(s, GL_INFO_LOG_LENGTH, &logLength); |
|||
if (logLength > 0) { |
|||
GLchar *log = (GLchar *)malloc(logLength); |
|||
glGetShaderInfoLog(s, logLength, &logLength, log); |
|||
std::cout << "Shader compile log:\n%s" << log << std::endl; |
|||
free(log); |
|||
} |
|||
} |
|||
|
|||
string slurp(string filename) { |
|||
ifstream in(filename); |
|||
stringstream sstr; |
|||
sstr << in.rdbuf(); |
|||
return sstr.str(); |
|||
} |
|||
|
|||
struct App { |
|||
float time; |
|||
GLuint program; |
|||
GLint uniform; |
|||
GLuint vao; |
|||
GLuint posBufferName; |
|||
|
|||
void initialize(){ |
|||
time = 0; |
|||
program = glCreateProgram(); |
|||
|
|||
auto v_source_str = slurp("Fractal.vsh"); |
|||
auto v_source = v_source_str.c_str(); |
|||
GLuint v = glCreateShader(GL_VERTEX_SHADER); |
|||
glShaderSource(v, 1, &v_source, NULL); |
|||
glCompileShader(v); |
|||
check_shader(v); |
|||
|
|||
auto f_source_str = slurp("Fractal.fsh"); |
|||
auto f_source = f_source_str.c_str(); |
|||
GLuint f = glCreateShader(GL_FRAGMENT_SHADER); |
|||
glShaderSource(f, 1, &f_source, NULL); |
|||
glCompileShader(f); |
|||
check_shader(f); |
|||
|
|||
glAttachShader(program, v); |
|||
glAttachShader(program, f); |
|||
|
|||
glBindAttribLocation(program, 0, "position"); |
|||
glBindAttribLocation(program, 1, "color"); |
|||
|
|||
glLinkProgram(program); |
|||
|
|||
uniform = glGetUniformLocation(program, "rotation"); |
|||
|
|||
glDetachShader(program, v); |
|||
glDeleteShader(v); |
|||
glDetachShader(program, f); |
|||
glDeleteShader(f); |
|||
|
|||
glGenVertexArrays(1, &vao); |
|||
glBindVertexArray(vao); |
|||
|
|||
glGenBuffers(1, &posBufferName); |
|||
glBindBuffer(GL_ARRAY_BUFFER, posBufferName); |
|||
glBufferData(GL_ARRAY_BUFFER, 4*6*4, quad, GL_STATIC_DRAW); |
|||
|
|||
glEnableVertexAttribArray(0); |
|||
glEnableVertexAttribArray(1); |
|||
|
|||
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6*4, BUFFER_OFFSET(0)); |
|||
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6*4, BUFFER_OFFSET(3*4)); |
|||
} |
|||
|
|||
void draw(){ |
|||
time += 1/60.0f; |
|||
|
|||
glClearColor(0.65f, 0.65f, 0.65f, 1.0f); |
|||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
|||
|
|||
glUseProgram(program); |
|||
glUniform1f(uniform, time); |
|||
glBindVertexArray(vao); |
|||
|
|||
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); |
|||
} |
|||
}; |
|||
|
|||
|
|||
int main(){ |
|||
const bool mandelbrot = false; |
|||
if(mandelbrot) { |
|||
App a; |
|||
|
|||
NSAppWrapper app; |
|||
|
|||
app.create_window({ |
|||
[&](ContextParameters){ |
|||
a.initialize(); |
|||
}, |
|||
[&](ContextParameters){ |
|||
a.draw(); |
|||
}, |
|||
nullptr |
|||
}); |
|||
|
|||
app.run(); |
|||
return 0; |
|||
} |
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// else, this other weird thing
|
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|
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auto context = cl::Context::getDefault(); |
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cout << context << endl; |
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|
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cl_int err = 0; |
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// build the program
|
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auto KernelSource = slurp("Kernel.cl"); |
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cl::Program program(context, {KernelSource.c_str(), KernelSource.size()}, true, &err); |
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check(err); |
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cout << program << endl; |
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|
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// grab the kernel
|
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KernelOp kernel(program, "square", &err); |
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check(err); |
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|
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// create a queue
|
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cl::CommandQueue queue(context, context.getInfo<CL_CONTEXT_DEVICES>().front()); |
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|
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// make a lot of data
|
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constexpr size_t W = 1280 * 4; |
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constexpr size_t H = 800 * 4; |
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std::vector<cl_float> input_vector(W*H); |
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|
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for(int y = 0; y < H; ++y){ |
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for(int x = 0; x < W; ++x){ |
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input_vector[x + W*y] = 10 * ((x / double(W) - 0.5) + 1.3371337*(y / double(H) - 0.5)); |
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} |
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} |
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|
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// transfer data into buffers
|
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cl::Buffer input(context, input_vector.begin(), input_vector.end(), false, true); |
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|
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int r = 80, g = 40, b = 20; |
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|
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// DO IT (in place)
|
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for(int i = 0; i < r; ++i){ |
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check(kernel(queue, W, H, input, W, input)); |
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} |
|||
|
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// read back
|
|||
queue.finish(); |
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|
|||
auto red = input_vector; |
|||
|
|||
// DO IT (in place)
|
|||
for(int i = 0; i < g; ++i){ |
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check(kernel(queue, W, H, input, W, input)); |
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} |
|||
|
|||
// read back
|
|||
queue.finish(); |
|||
|
|||
auto green = input_vector; |
|||
|
|||
// DO IT (in place)
|
|||
for(int i = 0; i < b; ++i){ |
|||
check(kernel(queue, W, H, input, W, input)); |
|||
} |
|||
|
|||
// read back
|
|||
queue.finish(); |
|||
|
|||
auto& blue = input_vector; |
|||
|
|||
// test
|
|||
cout << "opencl is done" << endl; |
|||
png::ostream<> image(W, H, "test.png"); |
|||
for(int i = 0; i < red.size(); ++i){ |
|||
image << png::ostream<>::pixel(blue[i], red[i], green[i]); |
|||
} |
|||
cout << "png is saved" << endl; |
|||
} |
|||
|
|||
Reference in new issue