Add ktx

ktx/tests/loadtests/glloadtests/shader-based/TextureCubemap.h

@@ -0,0 +1,114 @@
+/* -*- tab-width: 4; -*- */
+/* vi: set sw=2 ts=4 expandtab: */
+
+/*
+ * Copyright 2020 Mark Callow.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @internal
+ * @file
+ * @~English
+ *
+ * @brief Test loading of a cubemap.
+ *
+ * @author Mark Callow, github.com/MarkCallow.
+ */
+
+#include <vector>
+
+#include "GL3LoadTestSample.h"
+
+#include <glm/gtc/matrix_transform.hpp>
+
+#define VERTEX_BUFFER_BIND_ID 0
+#define ENABLE_VALIDATION false
+
+class TextureCubemap : public GL3LoadTestSample
+{
+  public:
+    TextureCubemap(uint32_t width, uint32_t height,
+                 const char* const szArgs,
+                 const std::string sBasePath);
+    ~TextureCubemap();
+
+    virtual int doEvent(SDL_Event* event);
+    virtual void resize(uint32_t width, uint32_t height);
+    virtual void run(uint32_t msTicks);
+
+    //virtual void getOverlayText(VulkanTextOverlay *textOverlay);
+
+    static LoadTestSample*
+    create(uint32_t width, uint32_t height,
+           const char* const szArgs, const std::string sBasePath);
+
+  protected:
+    const GLuint cubemapTexUnit;
+    const GLuint uniformBufferBindId;
+    GLuint levelCount = 0;
+    GLenum cubemapTexTarget;
+    GLuint gnCubemapTexture;
+    GLuint gnReflectProg;
+    GLuint gnSkyboxProg;
+    GLuint gnUbo;
+    
+    bool bInitialized;
+    bool bIsMipmapped;
+    bool bDisplaySkybox = true;
+    
+    uint32_t numLayers;
+
+    // Vertex layout for this example
+    struct TAVertex {
+        float pos[3];
+        float uv[2];
+    };
+    
+    struct {
+        glMeshLoader::MeshBuffer skybox;
+        std::vector<glMeshLoader::MeshBuffer> objects;
+        int32_t objectIndex = 0;
+    } meshes;
+
+    struct {
+        // Global matrices
+        glm::mat4 projection;
+        glm::mat4 modelView;
+        glm::mat4 skyboxView;
+        glm::mat4 invModelView;
+        glm::mat4 uvwTransform;
+        float lodBias = 0.0f;
+    } ubo;
+    
+    GLint uReflectProgramUniforms;
+    GLint uSkyboxProgramUniforms;
+    GLint uReflectCubemap;
+    GLint uSkyboxCubemap;
+
+    glm::vec3 zRotationAxis;
+
+    void cleanup();
+
+    void loadMeshes();
+
+    void prepareUniformBuffers();
+    void updateUniformBuffers();
+    void prepareSampler();
+    void preparePrograms();
+    void prepare();
+
+    void toggleSkyBox();
+    void toggleObject(int direction);
+    void changeLodBias(float delta);
+
+    void processArgs(std::string sArgs);
+
+    virtual void keyPressed(uint32_t keyCode);
+    virtual void viewChanged()
+    {
+        updateUniformBuffers();
+    }
+
+    GLuint skyboxVAO, skyboxVBO;
+};