tgfrerer’s gists

tgfrerer / ofTexture.cpp (lines 1042 to 1053)

Last active December 15, 2015 03:49

flipped vertex draw order to check if that un-messes texture coordinate problems with NVIDIA cards whilst keeping it sane for everyone else =)

	ofPushMatrix();

	ofTranslate(x,y,z);
	quad.getVertices()[0].set(px0,py0);
	quad.getVertices()[1].set(px1,py0);
	quad.getVertices()[3].set(px0,py1); // flipped
	quad.getVertices()[2].set(px1,py1); // flipped

	quad.getTexCoords()[0].set(tx0,ty0);
	quad.getTexCoords()[1].set(tx1,ty0);

tgfrerer / ofvbo.h lines: 506-514

Created March 19, 2013 16:30

	if(bUsingTexCoords) {
	glBindBuffer(GL_ARRAY_BUFFER, texCoordId);
	ofEnableTexCoords();
	if(ofGLIsFixedPipeline()){
	glTexCoordPointer(2, GL_FLOAT, texCoordStride, 0);
	}else{
	glVertexAttribPointer(ofGetAttrLocationTexCoord(), 2, GL_FLOAT, GL_FALSE, texCoordStride, 0);
	}
	}

tgfrerer / gist:5262377

Created March 28, 2013 11:03

opengl profiler log

	glEnableVertexAttribArray(2)
	Error: GL_INVALID_OPERATION
	Context: 0x058a5600
	Virtual Screen: 0/2
	kCGLCPCurrentRendererID: 16915206 (0x01021b06)
	GL_RENDERER: AMD Radeon HD 6750M OpenGL Engine
	GL_VENDOR: ATI Technologies Inc.
	GL_VERSION: 3.2 ATI-1.6.37
	kCGLCPGPUFragmentProcessing: GL_TRUE
	kCGLCPGPUVertexProcessing: GL_TRUE

tgfrerer / output.txt

Created June 10, 2013 14:33

	=================== config.mk platform detection ================
	PLATFORM_ARCH=armv6l
	PLATFORM_OS=Linux
	PLATFORM_VARIANT=default
	PLATFORM_LIB_SUBPATH=linuxarmv6l
	=================== config.mk paths =============================
	OF_ADDONS_PATH=../../../addons
	OF_EXPORT_PATH=../../../export
	OF_EXAMPLES_PATH=../../../examples
	OF_APPS_PATH=../../../apps

tgfrerer / gist:5788384

Created June 15, 2013 14:49

build flags for GLFW 3.0 / openFrameworks OS X 32 bit

	compiled using these flags:

	# cmake ../ -DGLFW_USE_CHDIR=0 -DGLFW_USE_MENUBAR=1 -DBUILD_SHARED_LIBS=0 -DGLFW_BUILD_EXAMPLES=0 -DGLFW_BUILD_TESTS=0 -DGLFW_BUILD_UNIVERSAL=0 -DCMAKE_OSX_ARCHITECTURES=i386 -DCMAKE_{C,CXX}_FLAGS=-m32

	# make -j

tgfrerer / main.cpp

Last active December 18, 2015 13:18

init programmable GL renderer in openFrameworks

	#include "ofMain.h"
	#include "testApp.h"
	#include "ofGLProgrammableRenderer.h"

	//========================================================================
	int main( ){
	ofPtr<ofBaseRenderer> renderer(new ofGLProgrammableRenderer(false));
	ofSetCurrentRenderer(renderer, false);

	ofSetupOpenGL(1024,768, OF_WINDOW); // <-------- setup the GL context

tgfrerer / GLES2 Renderer (filtered by of*)

Created July 4, 2013 15:11

Two perf records comparing a minimal of App running in the raspberry Pi using the Programmeble GL Renderer and the GLES2 Renderer '''perf_3.2 record -c 2 ./bin/emptyExample

	Samples: 31K of event 'cpu-clock:HG', Event count (approx.): 31838
	3.76% emptyExample emptyExample [.] ofGLES2Renderer::draw(ofMesh&, ofPolyRenderMode, bool, bool, bool)
	3.56% emptyExample emptyExample [.] ofShader::getUniformLocation(char const*)
	3.52% emptyExample emptyExample [.] ofGLES2Renderer::drawString(std::string, float, float, float, ofDrawBitmapMode)
	3.07% emptyExample emptyExample [.] ofShader::getAttributeLocation(char const*)
	2.68% emptyExample emptyExample [.] ofAppEGLWindow::display()
	2.50% emptyExample emptyExample [.] ofDrawBitmapCharacter(int, int, int)
	1.91% emptyExample emptyExample [.] Poco::AbstractEvent<ofEventArgs, Poco::FIFOStrategy<ofEventArgs, Poco::AbstractDelegate<ofEventArgs> >, Poco::AbstractDelegate<ofEve
	1.78% emptyExample emptyExample [.] ofShader::setUniform1f(char const*, float)
	1.75% emptyExample emptyExample [.] ofTexture::drawSubsection(float, float, float, float,

tgfrerer / perf.md

Last active December 19, 2015 09:49

# how to do performance monitoring on raspberry pi

use the perf tool:

use -c 1 to test every sample

perf_3.2 record -c 1 ./yourApp

display the report

perf report

tgfrerer / profile_test.sh

Created July 5, 2013 18:52

	#!/bin/bash

	echo "start profiling"
	sudo killall -12 raspberrypi_hello_world
	sleep 20
	sudo killall raspberrypi_hello_world
	echo "end profiling"

tgfrerer / gister.py

Last active December 19, 2015 09:58

	#!/bin/env python

	"""
	Gist
	----

	Gist is a command line tool for interacting with `gist.github.com`_. Usage
	information is available through the command line interface help.

	.. _gist.github.com: <https://gist.github.com>

Tim Gfrerer tgfrerer

use the perf tool:

use -c 1 to test every sample

display the report