Add ktx

2026-06-14 19:09:18 +01:00
parent 14bd1a9271
commit 13fa90a0e9
3958 changed files with 999286 additions and 4 deletions
@@ -0,0 +1,76 @@
+/* -*- tab-width: 4; -*- */
+/* vi: set sw=2 ts=4 expandtab: */
+
+/*
+ * Copyright 2017-2020 Mark Callow, <khronos at callow dot im>.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef GL3_LOAD_TEST_SAMPLE_H
+#define GL3_LOAD_TEST_SAMPLE_H
+
+#include <ktx.h>
+#include "LoadTestSample.h"
+#include "mygl.h"
+#include "utils/GLMeshLoader.hpp"
+
+#define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
+
+class GL3LoadTestSample : public LoadTestSample {
+  public:
+    typedef uint64_t ticks_t;
+    GL3LoadTestSample(uint32_t width, uint32_t height,
+                     const char* const /*szArgs*/,
+                     const std::string sBasePath)
+           : LoadTestSample(width, height, sBasePath)
+    {
+    }
+
+    virtual ~GL3LoadTestSample() { }
+    virtual int doEvent(SDL_Event* event) { return LoadTestSample::doEvent(event); };
+    virtual void resize(uint32_t width, uint32_t height) = 0;
+    virtual void run(uint32_t msTicks) = 0;
+
+    //virtual void getOverlayText(TextOverlay *textOverlay) { };
+
+    typedef LoadTestSample* (*PFN_create)(uint32_t width, uint32_t height,
+                                          const char* const szArgs,
+                                          const std::string sBasePath);
+
+  protected:
+    using ShaderSource = std::vector<const GLchar*>;
+
+    virtual void keyPressed(uint32_t /*keyCode*/) { }
+    virtual void viewChanged() { }
+
+    static bool contextSupportsSwizzle();
+
+    std::string ktxfilename;
+    int externalFile = 0;
+
+    struct compressedTexFeatures {
+        bool astc_ldr;
+        bool astc_hdr;
+        bool bc6h;
+        bool bc7;
+        bool etc1;
+        bool etc2;
+        bool bc3;
+        bool pvrtc1;
+        bool pvrtc_srgb;
+        bool pvrtc2;
+        bool rgtc;
+    };
+
+    static void determineCompressedTexFeatures(compressedTexFeatures& features);
+    static GLint framebufferColorEncoding();
+    void loadMesh(std::string filename, glMeshLoader::MeshBuffer& meshBuffer,
+                  std::vector<glMeshLoader::VertexLayout> vertexLayout,
+                  float scale);
+    static void makeShader(GLenum type, ShaderSource& source, GLuint* shader);
+    static void makeShader(GLenum type, const GLchar* const source,
+                           GLuint* shader);
+    static void makeProgram(GLuint vs, GLuint fs, GLuint* program);
+};
+
+#endif /* GL3_LOAD_TEST_SAMPLE_H */