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Add DebugRenderer enabling easy screen space point rendering

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This commit is contained in:
Erik Broberg
2016-06-14 18:16:43 -04:00
parent 3d7722f4b1
commit 3df34be916
5 changed files with 264 additions and 0 deletions
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119
modules/debugging/rendering/debugrenderer.cpp Normal file
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/*****************************************************************************************
* *
* OpenSpace *
* *
* Copyright (c) 2014-2016 *
* *
* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
* software and associated documentation files (the "Software"), to deal in the Software *
* without restriction, including without limitation the rights to use, copy, modify, *
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
* permit persons to whom the Software is furnished to do so, subject to the following *
* conditions: *
* *
* The above copyright notice and this permission notice shall be included in all copies *
* or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
****************************************************************************************/
#include <modules/debugging/rendering/debugrenderer.h>
#include <openspace/rendering/renderengine.h>
#include <openspace/engine/openspaceengine.h>
#include <glm/glm.hpp>
#include <memory>
#include <ostream>
#include <ghoul/misc/assert.h>
#include <iostream>
namespace {
const std::string _loggerCat = "DebugRenderer";
}
namespace openspace {
std::shared_ptr<DebugRenderer> DebugRenderer::_singleton = nullptr;
DebugRenderer::DebugRenderer() {
_programObject = OsEng.renderEngine().buildRenderProgram(
"BasicDebugShader",
"${MODULE_DEBUGGING}/rendering/debugshader_vs.glsl",
"${MODULE_DEBUGGING}/rendering/debugshader_fs.glsl"
);
}
std::shared_ptr<DebugRenderer> DebugRenderer::ref() {
if (_singleton == nullptr) {
try {
_singleton = std::make_shared<DebugRenderer>();
}
catch (const ShaderObject::ShaderCompileError& e) {
LERROR(e.what());
}
}
return _singleton;
}
void DebugRenderer::renderScreenSpace(const std::vector<glm::vec3>& clippingSpacePoints, GLenum mode, glm::vec4 rgba) const {
if (clippingSpacePoints.size() == 0) {
return;
}
GLuint _vaoID;
glGenVertexArrays(1, &_vaoID);
ghoul_assert(_vaoID != 0, "Could not generate vertex arrays");
GLuint _vertexBufferID;
glGenBuffers(1, &_vertexBufferID);
ghoul_assert(_vertexBufferID != 0, "Could not create vertex buffer");
_programObject->activate();
_programObject->setUniform("color", rgba);
glBindVertexArray(_vaoID);
// Vertex buffer
glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferID);
glBufferData(
GL_ARRAY_BUFFER,
clippingSpacePoints.size() * sizeof(clippingSpacePoints[0]),
&clippingSpacePoints[0],
GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(clippingSpacePoints[0]), 0);
// uniforms
glDrawArrays(mode, 0, clippingSpacePoints.size());
GLenum error = glGetError();
if (error != GL_NO_ERROR) {
LERROR(error);
}
glBindVertexArray(0);
glDeleteVertexArrays(1, &_vaoID);
glDeleteBuffers(1, &_vertexBufferID);
_programObject->deactivate();
}
} // namespace openspace

69
modules/debugging/rendering/debugrenderer.h Normal file
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/*****************************************************************************************
* *
* OpenSpace *
* *
* Copyright (c) 2014-2016 *
* *
* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
* software and associated documentation files (the "Software"), to deal in the Software *
* without restriction, including without limitation the rights to use, copy, modify, *
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
* permit persons to whom the Software is furnished to do so, subject to the following *
* conditions: *
* *
* The above copyright notice and this permission notice shall be included in all copies *
* or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
****************************************************************************************/
#ifndef __DEBUG_RENDERER_H__
#define __DEBUG_RENDERER_H__
#include <ghoul/opengl/ghoul_gl.h>
#include <ghoul/opengl/programobject.h>
#include <glm/glm.hpp>
#include <memory>
#include <vector>
#include <ghoul/misc/assert.h>
namespace openspace {
using namespace ghoul::opengl;
class DebugRenderer {
public:
DebugRenderer();
static std::shared_ptr<DebugRenderer> ref();
void renderScreenSpace(const std::vector<glm::vec3>& clippingSpacePoints, GLenum mode, glm::vec4 rgb = {1,0,0,1}) const;
private:
std::unique_ptr<ProgramObject> _programObject;
static std::shared_ptr<DebugRenderer> _singleton;
};
} // namespace openspace
#endif // __DEBUG_RENDERER_H__

38
modules/debugging/rendering/debugshader_fs.glsl Normal file
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/*****************************************************************************************
* *
* OpenSpace *
* *
* Copyright (c) 2014 *
* *
* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
* software and associated documentation files (the "Software"), to deal in the Software *
* without restriction, including without limitation the rights to use, copy, modify, *
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
* permit persons to whom the Software is furnished to do so, subject to the following *
* conditions: *
* *
* The above copyright notice and this permission notice shall be included in all copies *
* or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
****************************************************************************************/
#include "fragment.glsl"
#include "PowerScaling/powerScalingMath.hglsl"
in vec3 fs_vertexPosition;
uniform vec4 color;
Fragment getFragment(){
Fragment frag;
frag.color = color;
vec4 p = z_normalization(vec4(fs_vertexPosition, 1));
frag.depth = p.z;
return frag;
}

33
modules/debugging/rendering/debugshader_vs.glsl Normal file
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/*****************************************************************************************
* *
* OpenSpace *
* *
* Copyright (c) 2014 *
* *
* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
* software and associated documentation files (the "Software"), to deal in the Software *
* without restriction, including without limitation the rights to use, copy, modify, *
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
* permit persons to whom the Software is furnished to do so, subject to the following *
* conditions: *
* *
* The above copyright notice and this permission notice shall be included in all copies *
* or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
****************************************************************************************/
#version __CONTEXT__
layout(location = 0) in vec3 vertexPosition;
out vec3 fs_vertexPosition;
void main(){
fs_vertexPosition = vertexPosition;
gl_Position = vec4(vertexPosition, 1);
}