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add occlusionDepth uniform to screenspaceimage

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This commit is contained in:
Michael Nilsson
2016-03-14 10:39:20 -04:00
parent 34ca17563f
commit a94f877ac7
4 changed files with 18 additions and 7 deletions
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17
modules/base/rendering/screenspaceimage.cpp
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@@ -51,19 +51,26 @@ void ScreenSpaceImage::render(Camera* camera){
GLfloat m_viewport[4];
glGetFloatv(GL_VIEWPORT, m_viewport);
float height = (float(_texture->height())/float(_texture->width()));
//to scale the plane
float textureRatio = (float(_texture->height())/float(_texture->width()));
//to keep the texture ratio after viewport is distorted.
float scalingRatioX = m_viewport[2] / _originalViewportSize[0];
float scalingRatioY = m_viewport[3] / _originalViewportSize[1];
glm::mat4 transform = glm::translate(glm::mat4(1.f), _position.value());
transform = glm::scale(transform, glm::vec3(_scale.value()*scalingRatioY, _scale.value()*height*scalingRatioX, 1));
glm::vec3 position = _position.value();
float occlusionDepth = position.z;
position.z = _planeDepth;
glm::mat4 modelTransform = glm::translate(glm::mat4(1.f), position);
modelTransform = glm::scale(modelTransform, glm::vec3(_scale.value()*scalingRatioY, _scale.value()*textureRatio*scalingRatioX, 1));
glEnable(GL_DEPTH_TEST);
_shader->activate();
_shader->setUniform("ModelTransform",transform);
_shader->setUniform("OcclusionDepth", occlusionDepth);
_shader->setUniform("ModelTransform",modelTransform);
_shader->setUniform("ViewProjectionMatrix", camera->viewProjectionMatrix());
ghoul::opengl::TextureUnit unit;
unit.activate();
_texture->bind();