can render 2 cv::mats

2025-03-14 19:32:40 +01:00
parent 5ecc38a9ca
commit 0b541348b0
15 changed files with 290 additions and 12 deletions
@@ -0,0 +1,15 @@
+set(RENDERSRC)
+
+set(RENDERLIBNAME pixelariumrenderlib)
+
+set(RENDERLIBSRC
+  CvMatRender.cpp)
+
+add_library(${RENDERLIBNAME} STATIC
+  ${RENDERLIBSRC})
+
+target_link_libraries(${RENDERLIBNAME}
+  PRIVATE pixelariumimagelib)
+
+target_include_directories(${RENDERLIBNAME}
+  PRIVATE ${CMAKE_SOURCE_DIR}/lib)
@@ -0,0 +1,49 @@
+#include "CvMatRender.hpp"
+#include <cstdint>
+
+using namespace pixelarium::imaging;
+
+pixelarium::render::CvMatRender::CvMatRender(const Image& img)
+{
+    this->_img = img.GetImage();
+    this->_texture = 0;
+
+    cv::cvtColor(this->_img, this->_img, cv::COLOR_BGR2RGBA);
+}
+
+/*static*/ void pixelarium::render::matToTexture(const cv::Mat& image, GLuint* texture)
+{
+    glGenTextures(1, texture);
+    glBindTexture(GL_TEXTURE_2D, *texture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+    // auto image = img.GetImage();
+    switch (image.type())
+    {
+        case CV_16U:
+        case CV_16UC3:
+        case 26:
+            glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.cols, image.rows, 0,
+                         GL_RGBA, GL_UNSIGNED_SHORT, image.data);
+            break;
+        case 5:
+        case 29:
+            glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.cols, image.rows, 0,
+                         GL_RGBA, GL_FLOAT, image.data);
+            break;
+        default:
+            glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.cols, image.rows, 0,
+                         GL_RGBA, GL_UNSIGNED_BYTE, image.data);
+            break;
+    }
+}
+
+GLuint pixelarium::render::CvMatRender::Render()
+{
+    matToTexture(this->_img, &this->_texture);
+    return this->_texture;
+}
@@ -0,0 +1,30 @@
+#pragma once
+#ifdef _WIN32
+#include <windows.h>
+#include <GL/GL.h>
+#else
+#define GL_SILENCE_DEPRECATION
+#if defined(IMGUI_IMPL_OPENGL_ES2)
+#include <GLES2/gl2.h>
+#endif
+#include <GLFW/glfw3.h>  // Will drag system OpenGL headers
+#endif
+#include "imaging/Image.hpp"
+
+namespace pixelarium::render
+{
+    static void matToTexture(const cv::Mat& image,
+                         GLuint* texture);
+class CvMatRender
+{
+   public:
+    explicit CvMatRender(const pixelarium::imaging::Image& img);
+    // void* Render();
+    GLuint Render();
+
+   private:
+    cv::Mat _img;
+    GLuint _texture;
+};
+
+}  // namespace pixelarium::render