diff options
Diffstat (limited to 'wave-sim/src/graphics/graphicsdebug.cpp')
| -rw-r--r-- | wave-sim/src/graphics/graphicsdebug.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/wave-sim/src/graphics/graphicsdebug.cpp b/wave-sim/src/graphics/graphicsdebug.cpp new file mode 100644 index 0000000..b9d831c --- /dev/null +++ b/wave-sim/src/graphics/graphicsdebug.cpp @@ -0,0 +1,126 @@ +#include <GL/glew.h> +#include "graphics/graphicsdebug.h" + +#include <iostream> +#include <vector> + + +void checkError(std::string prefix) { + GLenum err = glGetError(); + if (err != GL_NO_ERROR) { + std::cerr << prefix << (prefix == std::string("") ? "" : ": ") << "GL is in an error state before painting." << std::endl; + printGLErrorCodeInEnglish(err); + } +} + +void printGLErrorCodeInEnglish(GLenum err) { + std::cerr << "GL error code " << err << ":" << std::endl; + switch(err) { + case GL_INVALID_ENUM: + std::cerr << "GL_INVALID_ENUM" << std::endl; + std::cerr << "An unacceptable value is specified for an enumerated argument. The offending command is ignored and has no other side effect than to set the error flag." << std::endl; + break; + case GL_INVALID_VALUE: + std::cerr << "GL_INVALID_VALUE" << std::endl; + std::cerr << "A numeric argument is out of range. The offending command is ignored and has no other side effect than to set the error flag." << std::endl; + break; + case GL_INVALID_OPERATION: + std::cerr << "GL_INVALID_OPERATION" << std::endl; + std::cerr << "The specified operation is not allowed in the current state. The offending command is ignored and has no other side effect than to set the error flag." << std::endl; + break; + case GL_INVALID_FRAMEBUFFER_OPERATION: + std::cerr << "GL_INVALID_FRAMEBUFFER_OPERATION" << std::endl; + std::cerr << "The framebuffer object is not complete. The offending command is ignored and has no other side effect than to set the error flag." << std::endl; + break; + case GL_OUT_OF_MEMORY: + std::cerr << "GL_OUT_OF_MEMORY" << std::endl; + std::cerr << "There is not enough memory left to execute the command. The state of the GL is undefined, except for the state of the error flags, after this error is recorded." << std::endl; + break; + case GL_STACK_UNDERFLOW: + std::cerr << "GL_STACK_UNDERFLOW" << std::endl; + std::cerr << "An attempt has been made to perform an operation that would cause an internal stack to underflow." << std::endl; + break; + case GL_STACK_OVERFLOW: + std::cerr << "GL_STACK_OVERFLOW" << std::endl; + std::cerr << "An attempt has been made to perform an operation that would cause an internal stack to overflow." << std::endl; + break; + default: + std::cerr << "Unknown GL error code" << std::endl; + } +} + +void checkFramebufferStatus() { + GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); + if (status != GL_FRAMEBUFFER_COMPLETE) { + std::cerr << "Framebuffer is incomplete." << std::endl; + printFramebufferErrorCodeInEnglish(status); + } +} + +void printFramebufferErrorCodeInEnglish(GLenum err) { + switch(err) { + case GL_FRAMEBUFFER_UNDEFINED: + std:: cerr << "GL_FRAMEBUFFER_UNDEFINED is returned if the specified framebuffer is the default read or draw framebuffer, but the default framebuffer does not exist." << std::endl; + break; + case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: + std::cerr << "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT is returned if any of the framebuffer attachment points are framebuffer incomplete." << std::endl; + break; + case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: + std::cerr << "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT is returned if the framebuffer does not have at least one image attached to it." << std::endl; + break; + case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER: + std::cerr << "GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER is returned if the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is GL_NONE for any color attachment point(s) named by GL_DRAW_BUFFERi." << std::endl; + break; + case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER: + std::cerr << "GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER is returned if GL_READ_BUFFER is not GL_NONE and the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is GL_NONE for the color attachment point named by GL_READ_BUFFER." << std::endl; + break; + case GL_FRAMEBUFFER_UNSUPPORTED: + std::cerr << "GL_FRAMEBUFFER_UNSUPPORTED is returned if the combination of internal formats of the attached images violates an implementation-dependent set of restrictions." << std::endl; + break; + case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE: + std::cerr << "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE is returned if the value of GL_RENDERBUFFER_SAMPLES is not the same for all attached renderbuffers; if the value of GL_TEXTURE_SAMPLES is the not same for all attached textures; or, if the attached images are a mix of renderbuffers and textures, the value of GL_RENDERBUFFER_SAMPLES does not match the value of GL_TEXTURE_SAMPLES." << std::endl; + std::cerr << "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE is also returned if the value of GL_TEXTURE_FIXED_SAMPLE_LOCATIONS is not the same for all attached textures; or, if the attached images are a mix of renderbuffers and textures, the value of GL_TEXTURE_FIXED_SAMPLE_LOCATIONS is not GL_TRUE for all attached textures." << std::endl; + break; + case GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS: + std::cerr << "GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS is returned if any framebuffer attachment is layered, and any populated attachment is not layered, or if all populated color attachments are not from textures of the same target." << std::endl; + break; + } +} + +void checkShaderCompilationStatus(GLuint shaderID) { + GLint status; + glGetShaderiv(shaderID, GL_COMPILE_STATUS, &status); + if (status == GL_FALSE) { + std::cerr << "Error: Could not compile shader." << std::endl; + + GLint maxLength = 0; + glGetShaderiv(shaderID, GL_INFO_LOG_LENGTH, &maxLength); + + // The maxLength includes the null character + std::vector<GLchar> errorLog(maxLength); + glGetShaderInfoLog(shaderID, maxLength, &maxLength, &errorLog[0]); + + std::cerr << &errorLog[0] << std::endl; + } else { + std::cerr << "Shader compiled." << std::endl; + } +} + +void checkShaderLinkStatus(GLuint shaderProgramID) { + GLint linked; + glGetProgramiv(shaderProgramID, GL_LINK_STATUS, &linked); + if (linked == GL_FALSE) { + std::cerr << "Shader failed to link" << std::endl; + + GLint maxLength = 0; + glGetProgramiv(shaderProgramID, GL_INFO_LOG_LENGTH, &maxLength); + + // The maxLength includes the null character + std::vector<GLchar> errorLog(maxLength); + glGetProgramInfoLog(shaderProgramID, maxLength, &maxLength, &errorLog[0]); + + std::cerr << &errorLog[0] << std::endl; + } else { + std::cerr << "Shader linked successfully." << std::endl; + } +} |