Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/examples/common/glShaderCache.cpp

@@ -0,0 +1,91 @@
+//
+//   Copyright 2015 Pixar
+//
+//   Licensed under the terms set forth in the LICENSE.txt file available at
+//   https://opensubdiv.org/license.
+//
+
+#include "glLoader.h"
+
+#include "glShaderCache.h"
+#include "glUtils.h"
+
+#include <vector>
+#include <opensubdiv/far/error.h>
+
+GLDrawConfig::GLDrawConfig(const std::string &version)
+    : _version(version), _numShaders(0) {
+    _program = glCreateProgram();
+}
+
+
+GLDrawConfig::~GLDrawConfig() {
+    if (_program)
+        glDeleteProgram(_program);
+}
+
+bool
+GLDrawConfig::CompileAndAttachShader(GLenum shaderType,
+const std::string &source) {
+
+
+	GLuint shader = glCreateShader(shaderType);
+
+#if 0
+	const char *sources[2];
+	sources[0] = _version.c_str();
+	sources[1] = source.c_str();
+#endif
+
+	std::string sources = _version + source;
+
+	const char *src = sources.c_str();
+
+    glShaderSource(shader, 1, &src, NULL);
+    glCompileShader(shader);
+
+    GLint status;
+    glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
+    if (status == GL_FALSE) {
+        GLint infoLogLength;
+        glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLogLength);
+        char * infoLog = new char[infoLogLength];
+        glGetShaderInfoLog(shader, infoLogLength, NULL, infoLog);
+        OpenSubdiv::Far::Error(OpenSubdiv::Far::FAR_RUNTIME_ERROR,
+                               "Error compiling GLSL shader: %s\n",
+                               infoLog);
+        delete[] infoLog;
+        return false;
+    }
+
+    glAttachShader(_program, shader);
+    ++_numShaders;
+    return true;
+}
+
+bool
+GLDrawConfig::Link() {
+    glLinkProgram(_program);
+
+    std::vector<GLuint> shaders(_numShaders);
+    GLsizei count = 0;
+    glGetAttachedShaders(_program, _numShaders, &count, &shaders[0]);
+    for (int i = 0; i < (int)count; ++i) {
+        glDeleteShader(shaders[i]);
+    }
+
+    GLint status;
+    glGetProgramiv(_program, GL_LINK_STATUS, &status );
+    if (status == GL_FALSE) {
+        GLint infoLogLength;
+        glGetProgramiv(_program, GL_INFO_LOG_LENGTH, &infoLogLength);
+        char * infoLog = new char[infoLogLength];
+        glGetProgramInfoLog(_program, infoLogLength, NULL, infoLog);
+        OpenSubdiv::Far::Error(OpenSubdiv::Far::FAR_RUNTIME_ERROR,
+                   "Error linking GLSL program: %s\n", infoLog);
+        delete[] infoLog;
+        return false;
+    }
+
+    return true;
+}