Reorganise GL initialisation.
This commit is contained in:
Paul Chote
@@ -23,6 +23,15 @@ namespace OpenRA.Platforms.Default
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Justification = "C-style naming is kept for consistency with the underlying native API.")]
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internal static class OpenGL
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{
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public enum GLFeatures
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{
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None = 0,
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GL2OrGreater = 1,
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FramebufferExt = 4,
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}
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public static GLFeatures Features { get; private set; }
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public const int GL_FALSE = 0;
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// ClearBufferMask
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@@ -338,81 +347,99 @@ namespace OpenRA.Platforms.Default
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public static void Initialize()
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{
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CheckGlVersion();
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if (SDL.SDL_GL_ExtensionSupported("GL_EXT_framebuffer_object") == SDL.SDL_bool.SDL_FALSE)
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// glGetError and glGetString are used in our error handlers
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// so we want these to be available early.
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try
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{
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OpenGL.WriteGraphicsLog("OpenRA requires the OpenGL extension GL_EXT_framebuffer_object.\n"
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+ "Please try updating your GPU driver to the latest version provided by the manufacturer.");
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throw new InvalidProgramException("Missing OpenGL extension GL_EXT_framebuffer_object. See graphics.log for details.");
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glGetError = Bind<GetError>("glGetError");
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glGetStringInternal = Bind<GetString>("glGetString");
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}
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catch (Exception)
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{
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throw new InvalidProgramException("Failed to initialize low-level OpenGL bindings. GPU information is not available");
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}
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glFlush = Bind<Flush>("glFlush");
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glViewport = Bind<Viewport>("glViewport");
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glClear = Bind<Clear>("glClear");
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glClearColor = Bind<ClearColor>("glClearColor");
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glGetError = Bind<GetError>("glGetError");
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glGetStringInternal = Bind<GetString>("glGetString");
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glGetIntegerv = Bind<GetIntegerv>("glGetIntegerv");
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glFinish = Bind<Finish>("glFinish");
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glCreateProgram = Bind<CreateProgram>("glCreateProgram");
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glUseProgram = Bind<UseProgram>("glUseProgram");
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glGetProgramiv = Bind<GetProgramiv>("glGetProgramiv");
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glCreateShader = Bind<CreateShader>("glCreateShader");
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glShaderSource = Bind<ShaderSource>("glShaderSource");
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glCompileShader = Bind<CompileShader>("glCompileShader");
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glGetShaderiv = Bind<GetShaderiv>("glGetShaderiv");
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glAttachShader = Bind<AttachShader>("glAttachShader");
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glGetShaderInfoLog = Bind<GetShaderInfoLog>("glGetShaderInfoLog");
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glLinkProgram = Bind<LinkProgram>("glLinkProgram");
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glGetProgramInfoLog = Bind<GetProgramInfoLog>("glGetProgramInfoLog");
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glGetUniformLocation = Bind<GetUniformLocation>("glGetUniformLocation");
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glGetActiveUniform = Bind<GetActiveUniform>("glGetActiveUniform");
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glUniform1i = Bind<Uniform1i>("glUniform1i");
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glUniform1f = Bind<Uniform1f>("glUniform1f");
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glUniform2f = Bind<Uniform2f>("glUniform2f");
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glUniform1fv = Bind<Uniform1fv>("glUniform1fv");
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glUniform2fv = Bind<Uniform2fv>("glUniform2fv");
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glUniform3fv = Bind<Uniform3fv>("glUniform3fv");
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glUniform4fv = Bind<Uniform4fv>("glUniform4fv");
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glUniformMatrix4fv = Bind<UniformMatrix4fv>("glUniformMatrix4fv");
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glGenBuffers = Bind<GenBuffers>("glGenBuffers");
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glBindBuffer = Bind<BindBuffer>("glBindBuffer");
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glBufferData = Bind<BufferData>("glBufferData");
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glBufferSubData = Bind<BufferSubData>("glBufferSubData");
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glDeleteBuffers = Bind<DeleteBuffers>("glDeleteBuffers");
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glBindAttribLocation = Bind<BindAttribLocation>("glBindAttribLocation");
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glVertexAttribPointer = Bind<VertexAttribPointer>("glVertexAttribPointer");
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glEnableVertexAttribArray = Bind<EnableVertexAttribArray>("glEnableVertexAttribArray");
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glDisableVertexAttribArray = Bind<DisableVertexAttribArray>("glDisableVertexAttribArray");
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glDrawArrays = Bind<DrawArrays>("glDrawArrays");
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glEnable = Bind<Enable>("glEnable");
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glDisable = Bind<Disable>("glDisable");
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glBlendEquation = Bind<BlendEquation>("glBlendEquation");
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glBlendFunc = Bind<BlendFunc>("glBlendFunc");
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glScissor = Bind<Scissor>("glScissor");
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glPushClientAttrib = Bind<PushClientAttrib>("glPushClientAttrib");
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glPopClientAttrib = Bind<PopClientAttrib>("glPopClientAttrib");
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glPixelStoref = Bind<PixelStoref>("glPixelStoref");
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glReadPixels = Bind<ReadPixels>("glReadPixels");
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glGenTextures = Bind<GenTextures>("glGenTextures");
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glDeleteTextures = Bind<DeleteTextures>("glDeleteTextures");
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glBindTexture = Bind<BindTexture>("glBindTexture");
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glActiveTexture = Bind<ActiveTexture>("glActiveTexture");
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glTexImage2D = Bind<TexImage2D>("glTexImage2D");
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glGetTexImage = Bind<GetTexImage>("glGetTexImage");
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glTexParameteri = Bind<TexParameteri>("glTexParameteri");
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glTexParameterf = Bind<TexParameterf>("glTexParameterf");
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glGenFramebuffersEXT = Bind<GenFramebuffersEXT>("glGenFramebuffersEXT");
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glBindFramebufferEXT = Bind<BindFramebufferEXT>("glBindFramebufferEXT");
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glFramebufferTexture2DEXT = Bind<FramebufferTexture2DEXT>("glFramebufferTexture2DEXT");
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glDeleteFramebuffersEXT = Bind<DeleteFramebuffersEXT>("glDeleteFramebuffersEXT");
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glGenRenderbuffersEXT = Bind<GenRenderbuffersEXT>("glGenRenderbuffersEXT");
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glBindRenderbufferEXT = Bind<BindRenderbufferEXT>("glBindRenderbufferEXT");
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glRenderbufferStorageEXT = Bind<RenderbufferStorageEXT>("glRenderbufferStorageEXT");
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glDeleteRenderbuffersEXT = Bind<DeleteRenderbuffersEXT>("glDeleteRenderbuffersEXT");
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glFramebufferRenderbufferEXT = Bind<FramebufferRenderbufferEXT>("glFramebufferRenderbufferEXT");
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glCheckFramebufferStatus = Bind<CheckFramebufferStatus>("glCheckFramebufferStatus");
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DetectGLFeatures();
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if (!Features.HasFlag(GLFeatures.GL2OrGreater) || !Features.HasFlag(GLFeatures.FramebufferExt))
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{
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WriteGraphicsLog("Unsupported OpenGL version: " + glGetString(OpenGL.GL_VERSION));
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throw new InvalidProgramException("OpenGL Version Error: See graphics.log for details.");
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}
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else
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Console.WriteLine("OpenGL version: " + glGetString(OpenGL.GL_VERSION));
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try
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{
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glFlush = Bind<Flush>("glFlush");
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glViewport = Bind<Viewport>("glViewport");
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glClear = Bind<Clear>("glClear");
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glClearColor = Bind<ClearColor>("glClearColor");
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glGetIntegerv = Bind<GetIntegerv>("glGetIntegerv");
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glFinish = Bind<Finish>("glFinish");
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glCreateProgram = Bind<CreateProgram>("glCreateProgram");
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glUseProgram = Bind<UseProgram>("glUseProgram");
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glGetProgramiv = Bind<GetProgramiv>("glGetProgramiv");
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glCreateShader = Bind<CreateShader>("glCreateShader");
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glShaderSource = Bind<ShaderSource>("glShaderSource");
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glCompileShader = Bind<CompileShader>("glCompileShader");
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glGetShaderiv = Bind<GetShaderiv>("glGetShaderiv");
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glAttachShader = Bind<AttachShader>("glAttachShader");
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glGetShaderInfoLog = Bind<GetShaderInfoLog>("glGetShaderInfoLog");
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glLinkProgram = Bind<LinkProgram>("glLinkProgram");
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glGetProgramInfoLog = Bind<GetProgramInfoLog>("glGetProgramInfoLog");
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glGetUniformLocation = Bind<GetUniformLocation>("glGetUniformLocation");
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glGetActiveUniform = Bind<GetActiveUniform>("glGetActiveUniform");
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glUniform1i = Bind<Uniform1i>("glUniform1i");
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glUniform1f = Bind<Uniform1f>("glUniform1f");
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glUniform2f = Bind<Uniform2f>("glUniform2f");
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glUniform1fv = Bind<Uniform1fv>("glUniform1fv");
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glUniform2fv = Bind<Uniform2fv>("glUniform2fv");
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glUniform3fv = Bind<Uniform3fv>("glUniform3fv");
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glUniform4fv = Bind<Uniform4fv>("glUniform4fv");
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glUniformMatrix4fv = Bind<UniformMatrix4fv>("glUniformMatrix4fv");
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glGenBuffers = Bind<GenBuffers>("glGenBuffers");
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glBindBuffer = Bind<BindBuffer>("glBindBuffer");
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glBufferData = Bind<BufferData>("glBufferData");
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glBufferSubData = Bind<BufferSubData>("glBufferSubData");
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glDeleteBuffers = Bind<DeleteBuffers>("glDeleteBuffers");
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glBindAttribLocation = Bind<BindAttribLocation>("glBindAttribLocation");
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glVertexAttribPointer = Bind<VertexAttribPointer>("glVertexAttribPointer");
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glEnableVertexAttribArray = Bind<EnableVertexAttribArray>("glEnableVertexAttribArray");
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glDisableVertexAttribArray = Bind<DisableVertexAttribArray>("glDisableVertexAttribArray");
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glDrawArrays = Bind<DrawArrays>("glDrawArrays");
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glEnable = Bind<Enable>("glEnable");
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glDisable = Bind<Disable>("glDisable");
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glBlendEquation = Bind<BlendEquation>("glBlendEquation");
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glBlendFunc = Bind<BlendFunc>("glBlendFunc");
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glScissor = Bind<Scissor>("glScissor");
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glPushClientAttrib = Bind<PushClientAttrib>("glPushClientAttrib");
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glPopClientAttrib = Bind<PopClientAttrib>("glPopClientAttrib");
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glPixelStoref = Bind<PixelStoref>("glPixelStoref");
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glReadPixels = Bind<ReadPixels>("glReadPixels");
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glGenTextures = Bind<GenTextures>("glGenTextures");
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glDeleteTextures = Bind<DeleteTextures>("glDeleteTextures");
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glBindTexture = Bind<BindTexture>("glBindTexture");
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glActiveTexture = Bind<ActiveTexture>("glActiveTexture");
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glTexImage2D = Bind<TexImage2D>("glTexImage2D");
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glGetTexImage = Bind<GetTexImage>("glGetTexImage");
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glTexParameteri = Bind<TexParameteri>("glTexParameteri");
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glTexParameterf = Bind<TexParameterf>("glTexParameterf");
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glGenFramebuffersEXT = Bind<GenFramebuffersEXT>("glGenFramebuffersEXT");
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glBindFramebufferEXT = Bind<BindFramebufferEXT>("glBindFramebufferEXT");
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glFramebufferTexture2DEXT = Bind<FramebufferTexture2DEXT>("glFramebufferTexture2DEXT");
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glDeleteFramebuffersEXT = Bind<DeleteFramebuffersEXT>("glDeleteFramebuffersEXT");
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glGenRenderbuffersEXT = Bind<GenRenderbuffersEXT>("glGenRenderbuffersEXT");
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glBindRenderbufferEXT = Bind<BindRenderbufferEXT>("glBindRenderbufferEXT");
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glRenderbufferStorageEXT = Bind<RenderbufferStorageEXT>("glRenderbufferStorageEXT");
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glDeleteRenderbuffersEXT = Bind<DeleteRenderbuffersEXT>("glDeleteRenderbuffersEXT");
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glFramebufferRenderbufferEXT = Bind<FramebufferRenderbufferEXT>("glFramebufferRenderbufferEXT");
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glCheckFramebufferStatus = Bind<CheckFramebufferStatus>("glCheckFramebufferStatus");
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}
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catch (Exception e)
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{
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OpenGL.WriteGraphicsLog("Failed to initialize OpenGL bindings.\nInner exception was: {0}".F(e));
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throw new InvalidProgramException("Failed to initialize OpenGL. See graphics.log for details.");
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}
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}
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static T Bind<T>(string name)
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@@ -420,27 +447,29 @@ namespace OpenRA.Platforms.Default
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return (T)(object)Marshal.GetDelegateForFunctionPointer(SDL.SDL_GL_GetProcAddress(name), typeof(T));
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}
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static void CheckGlVersion()
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public static void DetectGLFeatures()
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{
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var versionString = OpenGL.glGetString(OpenGL.GL_VERSION);
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var version = versionString.Contains(" ") ? versionString.Split(' ')[0].Split('.') : versionString.Split('.');
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var major = 0;
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if (version.Length > 0)
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int.TryParse(version[0], out major);
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var minor = 0;
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if (version.Length > 1)
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int.TryParse(version[1], out minor);
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Console.WriteLine("Detected OpenGL version: {0}.{1}".F(major, minor));
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if (major < 2)
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try
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{
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OpenGL.WriteGraphicsLog("OpenRA requires OpenGL version 2.0 or greater and detected {0}.{1}".F(major, minor));
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throw new InvalidProgramException("OpenGL Version Error: See graphics.log for details.");
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}
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var versionString = glGetString(OpenGL.GL_VERSION);
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var version = versionString.Contains(" ") ? versionString.Split(' ')[0].Split('.') : versionString.Split('.');
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CheckGlError();
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var major = 0;
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if (version.Length > 0)
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int.TryParse(version[0], out major);
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var minor = 0;
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if (version.Length > 1)
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int.TryParse(version[1], out minor);
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if (major >= 2 && minor >= 0)
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Features |= GLFeatures.GL2OrGreater;
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var hasFramebufferExt = SDL.SDL_GL_ExtensionSupported("GL_EXT_framebuffer_object") == SDL.SDL_bool.SDL_TRUE;
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if (hasFramebufferExt)
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Features |= GLFeatures.FramebufferExt;
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}
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catch (Exception) { }
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}
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public static void CheckGLError()
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