mirror of
https://github.com/OPM/ResInsight.git
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ce9a65ee41
Housekeeping in VizFwk in preparation for introducing support for QOpenGLWidget and Qt6 * Adjusted unit tests to changes in source code * Use Qt5 as default and removed copying of Qt DLLs * Removed support for Qt4 * Removed the CVF_OPENGL_ES define. If we ever want to re-introduce support fro OpenGLES/Angle it should be handled differently. *Added include of <locale.h> * Added target for running Glsl2Include in order to build cvfShaderSourceStrings.h * Removed all usage of CVF_USING_CMAKE * Removed visual studio project files
398 lines
14 KiB
C++
398 lines
14 KiB
C++
//##################################################################################################
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//
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// Custom Visualization Core library
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// Copyright (C) 2011-2013 Ceetron AS
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//
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// This library may be used under the terms of either the GNU General Public License or
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// the GNU Lesser General Public License as follows:
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//
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// GNU General Public License Usage
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// This library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
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// for more details.
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//
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// GNU Lesser General Public License Usage
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
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// for more details.
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//
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//##################################################################################################
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#include "cvfBase.h"
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#include "cvfOverlayImage.h"
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#include "cvfMatrixState.h"
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#include "cvfCamera.h"
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#include "cvfShaderProgram.h"
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#include "cvfOpenGL.h"
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#include "cvfViewport.h"
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#include "cvfOpenGLResourceManager.h"
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#include "cvfUniform.h"
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#include "cvfTextureImage.h"
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#include "cvfSampler.h"
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#include "cvfTexture.h"
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#include "cvfShaderProgramGenerator.h"
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#include "cvfShaderSourceRepository.h"
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#include "cvfShaderSourceProvider.h"
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#include "cvfShaderProgram.h"
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#include "cvfRenderStateDepth.h"
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#include "cvfRenderStateTextureBindings.h"
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#include "cvfRenderStateBlending.h"
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#include "cvfRenderState_FF.h"
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#include "cvfTexture2D_FF.h"
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namespace cvf {
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//==================================================================================================
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///
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/// \class cvf::OverlayImage
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/// \ingroup Render
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///
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///
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///
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//==================================================================================================
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//--------------------------------------------------------------------------------------------------
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/// Constructor. The specified font is used to draw all the text
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//--------------------------------------------------------------------------------------------------
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OverlayImage::OverlayImage(TextureImage* image)
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: m_alpha(1.0f)
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{
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CVF_ASSERT(image);
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m_blendMode = NO_BLENDING;
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m_sampler = new cvf::Sampler;
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m_sampler->setWrapMode(cvf::Sampler::CLAMP_TO_EDGE);
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m_sampler->setMinFilter(cvf::Sampler::NEAREST);
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m_sampler->setMagFilter(cvf::Sampler::NEAREST);
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setImage(image);
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}
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//--------------------------------------------------------------------------------------------------
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/// Destructor
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//--------------------------------------------------------------------------------------------------
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OverlayImage::~OverlayImage()
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{
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}
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//--------------------------------------------------------------------------------------------------
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/// Returns the wanted size in pixels
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//--------------------------------------------------------------------------------------------------
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cvf::Vec2ui OverlayImage::sizeHint()
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{
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return m_size;
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}
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//--------------------------------------------------------------------------------------------------
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/// Render using Shaders
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//--------------------------------------------------------------------------------------------------
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void OverlayImage::render(OpenGLContext* oglContext, const Vec2i& position, const Vec2ui& size)
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{
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render(oglContext, position, size, false);
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}
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//--------------------------------------------------------------------------------------------------
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/// Render using Fixed Function
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//--------------------------------------------------------------------------------------------------
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void OverlayImage::renderSoftware(OpenGLContext* oglContext, const Vec2i& position, const Vec2ui& size)
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{
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render(oglContext, position, size, true);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void OverlayImage::render(OpenGLContext* oglContext, const Vec2i& position, const Vec2ui& size, bool software)
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{
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CVF_CALLSITE_OPENGL(oglContext);
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Camera projCam;
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projCam.setViewport(position.x(), position.y(), size.x(), size.y());
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projCam.setProjectionAsPixelExact2D();
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projCam.setViewMatrix(Mat4d::IDENTITY);
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// Turn off depth test
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RenderStateDepth depth(false, RenderStateDepth::LESS, false);
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depth.applyOpenGL(oglContext);
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float vertexArray[12];
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float textureCoords[] = {0.0f, 0.0f,
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1.0f, 0.0f,
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1.0f, 1.0f,
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0.0f, 1.0f};
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projCam.viewport()->applyOpenGL(oglContext, Viewport::DO_NOT_CLEAR);
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if (software)
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{
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// Create a POW2 texture for software rendering if needed
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if (m_image.notNull() && m_pow2Image.isNull() && (!Math::isPow2(m_image->width()) || !Math::isPow2(m_image->height())))
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{
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m_pow2Image = new TextureImage;
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m_pow2Image->allocate(Math::roundUpPow2(m_image->width()), Math::roundUpPow2(m_image->height()));
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m_pow2Image->fill(Color4ub(Color3::BLACK));
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for (uint y = 0; y < m_image->height(); ++y)
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{
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for (uint x = 0; x < m_image->width(); ++x)
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{
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m_pow2Image->setPixel(x, y, m_image->pixel(x, y));
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}
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}
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}
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if (ShaderProgram::supportedOpenGL(oglContext))
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{
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ShaderProgram::useNoProgram(oglContext);
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}
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RenderStateMaterial_FF mat;
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mat.enableColorMaterial(true);
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mat.applyOpenGL(oglContext);
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RenderStateLighting_FF light(false);
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light.applyOpenGL(oglContext);
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if (m_textureBindings.isNull())
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{
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// Use fixed function texture setup
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ref<Texture2D_FF> texture = new Texture2D_FF(m_pow2Image.notNull() ? m_pow2Image.p() : m_image.p());
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texture->setWrapMode(Texture2D_FF::CLAMP);
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texture->setMinFilter(Texture2D_FF::NEAREST);
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texture->setMagFilter(Texture2D_FF::NEAREST);
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texture->setupTexture(oglContext);
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texture->setupTextureParams(oglContext);
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ref<RenderStateTextureMapping_FF> textureMapping = new RenderStateTextureMapping_FF(texture.p());
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textureMapping->setTextureFunction(m_blendMode == TEXTURE_ALPHA ? RenderStateTextureMapping_FF::MODULATE : RenderStateTextureMapping_FF::DECAL);
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m_textureBindings = textureMapping;
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}
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// Adjust texture coordinates
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if (m_pow2Image.notNull())
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{
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float xMax = static_cast<float>(m_image->width())/static_cast<float>(m_pow2Image->width());
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float yMax = static_cast<float>(m_image->height())/static_cast<float>(m_pow2Image->height());
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textureCoords[2] = xMax;
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textureCoords[4] = xMax;
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textureCoords[5] = yMax;
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textureCoords[7] = yMax;
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}
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projCam.applyOpenGL();
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}
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else
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{
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glEnableVertexAttribArray(ShaderProgram::VERTEX);
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glEnableVertexAttribArray(ShaderProgram::TEX_COORD_2F_0);
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glVertexAttribPointer(ShaderProgram::VERTEX, 3, GL_FLOAT, GL_FALSE, 0, vertexArray);
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glVertexAttribPointer(ShaderProgram::TEX_COORD_2F_0, 2, GL_FLOAT, GL_FALSE, 0, textureCoords);
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if (m_shaderProgram.isNull())
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{
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ShaderProgramGenerator gen("OverlayImage_Shader", ShaderSourceProvider::instance());
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gen.addVertexCode(ShaderSourceRepository::vs_MinimalTexture);
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if (m_blendMode == GLOBAL_ALPHA)
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{
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gen.addFragmentCode(ShaderSourceRepository::src_TextureGlobalAlpha);
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}
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else
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{
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gen.addFragmentCode(ShaderSourceRepository::src_Texture);
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}
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gen.addFragmentCode(ShaderSourceRepository::fs_Unlit);
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m_shaderProgram = gen.generate();
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m_shaderProgram->linkProgram(oglContext);
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}
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if (m_shaderProgram->useProgram(oglContext))
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{
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MatrixState projMatrixState(projCam);
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m_shaderProgram->clearUniformApplyTracking();
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m_shaderProgram->applyFixedUniforms(oglContext, projMatrixState);
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}
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if (m_texture->textureOglId() == 0)
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{
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m_texture->setupTexture(oglContext);
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}
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if (m_textureBindings.isNull())
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{
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cvf::RenderStateTextureBindings* textureBindings = new cvf::RenderStateTextureBindings;
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textureBindings->addBinding(m_texture.p(), m_sampler.p(), "u_texture2D");
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m_textureBindings = textureBindings;
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}
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}
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float offset = 0.0f;
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Vec3f min(offset, offset, 0.0f);
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Vec3f max(static_cast<float>(size.x()) + offset, static_cast<float>(size.y()) + offset, 0.0f);
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// Setup the vertex array
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float* v1 = &vertexArray[0];
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float* v2 = &vertexArray[3];
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float* v3 = &vertexArray[6];
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float* v4 = &vertexArray[9];
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v1[0] = min.x(); v1[1] = min.y(); v1[2] = 0.0f;
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v2[0] = max.x(); v2[1] = min.y(); v2[2] = 0.0f;
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v3[0] = max.x(); v3[1] = max.y(); v3[2] = 0.0f;
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v4[0] = min.x(); v4[1] = max.y(); v4[2] = 0.0f;
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if (m_blendMode != NO_BLENDING)
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{
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RenderStateBlending blend;
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blend.configureTransparencyBlending();
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blend.applyOpenGL(oglContext);
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}
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m_textureBindings->applyOpenGL(oglContext);
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if (software)
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{
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glColor4f(1.0f, 1.0f, 1.0f, m_blendMode == GLOBAL_ALPHA ? m_alpha : 1.0f);
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glBegin(GL_TRIANGLE_FAN);
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glTexCoord2f(textureCoords[0], textureCoords[1]);
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glVertex3fv(v1);
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glTexCoord2f(textureCoords[2], textureCoords[3]);
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glVertex3fv(v2);
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glTexCoord2f(textureCoords[4], textureCoords[5]);
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glVertex3fv(v3);
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glTexCoord2f(textureCoords[6], textureCoords[7]);
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glVertex3fv(v4);
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glEnd();
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}
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else
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{
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if (m_blendMode == GLOBAL_ALPHA)
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{
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UniformFloat alphaUniform("u_alpha", m_alpha);
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m_shaderProgram->applyUniform(oglContext, alphaUniform);
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}
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glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
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}
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if (m_blendMode != NO_BLENDING)
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{
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RenderStateBlending blend;
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blend.applyOpenGL(oglContext);
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}
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RenderStateDepth resetDepth;
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resetDepth.applyOpenGL(oglContext);
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if (software)
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{
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RenderStateTextureMapping_FF resetTextureMapping;
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resetTextureMapping.applyOpenGL(oglContext);
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}
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if (!software)
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{
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glDisableVertexAttribArray(ShaderProgram::VERTEX);
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glDisableVertexAttribArray(ShaderProgram::TEX_COORD_2F_0);
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}
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void OverlayImage::setImage(TextureImage* image)
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{
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m_image = image;
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m_pow2Image = NULL;
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m_size.x() = image->width();
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m_size.y() = image->height();
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m_texture = new Texture(image);
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m_textureBindings = NULL;
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}
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//--------------------------------------------------------------------------------------------------
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/// Set the size (in pixels) of the text box
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//--------------------------------------------------------------------------------------------------
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void OverlayImage::setPixelSize( const Vec2ui& size )
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{
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m_size = size;
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}
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//--------------------------------------------------------------------------------------------------
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/// Returns the text shown in the text box
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//--------------------------------------------------------------------------------------------------
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const TextureImage* OverlayImage::image() const
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{
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return m_image.p();
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}
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//--------------------------------------------------------------------------------------------------
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/// Set the transparency of the image. 1.0 = opaque, 0.0 = invisible
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//--------------------------------------------------------------------------------------------------
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void OverlayImage::setGlobalAlpha(float alphaFactor)
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{
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m_alpha = alphaFactor;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void OverlayImage::setBlending(Blending mode)
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{
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m_blendMode = mode;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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float OverlayImage::globalAlpha() const
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{
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return m_alpha;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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OverlayImage::Blending OverlayImage::blending() const
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{
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return m_blendMode;
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}
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} // namespace cvf
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