Retrait d'instances de mc"clone"

SQCSim2021/texture.cpp

@@ -0,0 +1,64 @@
+#include "texture.h"
+#include <cassert>
+
+Texture::Texture(const std::string& filename) : m_isValid(false)
+{
+    if(filename != "")
+        Load(filename);
+}
+
+Texture::~Texture()
+{
+    if(IsValid())
+        glDeleteTextures(1, &m_textureId);
+}
+
+
+bool Texture::Load(const std::string& filename)
+{
+    // Initialize Devil only once:
+    static bool alreadyInitialized = false;
+    if(!alreadyInitialized)
+    {
+        ilInit();
+        alreadyInitialized = true;
+    }
+
+    // Use Devil library to load image data in memory
+    ILuint texid;
+    ilGenImages(1, &texid);
+    ilBindImage(texid);
+
+    ilOriginFunc(IL_ORIGIN_LOWER_LEFT);
+    ilEnable(IL_ORIGIN_SET);
+
+    if (!ilLoadImage((const ILstring)filename.c_str()))
+        return false;
+
+    if (!ilConvertImage(IL_RGBA, IL_UNSIGNED_BYTE))
+        return false;
+
+    // Create mipmapped opengl texture from image data
+    glGenTextures(1, &m_textureId);
+    glBindTexture(GL_TEXTURE_2D, m_textureId);
+
+    gluBuild2DMipmaps(GL_TEXTURE_2D, 4, ilGetInteger(IL_IMAGE_WIDTH), ilGetInteger(IL_IMAGE_HEIGHT), ilGetInteger(IL_IMAGE_FORMAT), GL_UNSIGNED_BYTE, ilGetData());
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    ilDeleteImages(1, &texid);
+
+    m_isValid = true;
+    return true;
+}
+
+bool Texture::IsValid() const
+{
+    return m_isValid;
+}
+
+void Texture::Bind() const
+{
+    assert(IsValid());
+    glBindTexture(GL_TEXTURE_2D, m_textureId);
+}
+