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gl_shader_util: Grab latest upstream.

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This commit is contained in:
bunnei 2018-04-06 23:54:44 -04:00
parent dbfd106ba0
commit 4f2b2d0bc5
2 changed files with 75 additions and 150 deletions
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169
src/video_core/renderer_opengl/gl_shader_util.cpp
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@ -10,156 +10,41 @@
namespace GLShader {
GLuint LoadProgram(const char* vertex_shader, const char* geometry_shader,
const char* fragment_shader, const std::vector<const char*>& feedback_vars,
bool separable_program) {
// Create the shaders
GLuint vertex_shader_id = vertex_shader ? glCreateShader(GL_VERTEX_SHADER) : 0;
GLuint geometry_shader_id = geometry_shader ? glCreateShader(GL_GEOMETRY_SHADER) : 0;
GLuint fragment_shader_id = fragment_shader ? glCreateShader(GL_FRAGMENT_SHADER) : 0;
GLuint LoadShader(const char* source, GLenum type) {
const char* debug_type;
switch (type) {
case GL_VERTEX_SHADER:
debug_type = "vertex";
break;
case GL_GEOMETRY_SHADER:
debug_type = "geometry";
break;
case GL_FRAGMENT_SHADER:
debug_type = "fragment";
break;
default:
UNREACHABLE();
}
GLuint shader_id = glCreateShader(type);
glShaderSource(shader_id, 1, &source, nullptr);
NGLOG_DEBUG(Render_OpenGL, "Compiling {} shader...", debug_type);
glCompileShader(shader_id);
GLint result = GL_FALSE;
int info_log_length;
if (vertex_shader) {
// Compile Vertex Shader
LOG_DEBUG(Render_OpenGL, "Compiling vertex shader...");
glShaderSource(vertex_shader_id, 1, &vertex_shader, nullptr);
glCompileShader(vertex_shader_id);
// Check Vertex Shader
glGetShaderiv(vertex_shader_id, GL_COMPILE_STATUS, &result);
glGetShaderiv(vertex_shader_id, GL_INFO_LOG_LENGTH, &info_log_length);
GLint info_log_length;
glGetShaderiv(shader_id, GL_COMPILE_STATUS, &result);
glGetShaderiv(shader_id, GL_INFO_LOG_LENGTH, &info_log_length);
if (info_log_length > 1) {
std::vector<char> vertex_shader_error(info_log_length);
glGetShaderInfoLog(vertex_shader_id, info_log_length, nullptr, &vertex_shader_error[0]);
std::string shader_error(info_log_length, ' ');
glGetShaderInfoLog(shader_id, info_log_length, nullptr, &shader_error[0]);
if (result == GL_TRUE) {
LOG_DEBUG(Render_OpenGL, "%s", &vertex_shader_error[0]);
NGLOG_DEBUG(Render_OpenGL, "{}", shader_error);
} else {
LOG_CRITICAL(Render_OpenGL, "Error compiling vertex shader:\n%s",
&vertex_shader_error[0]);
NGLOG_ERROR(Render_OpenGL, "Error compiling {} shader:\n{}", debug_type, shader_error);
}
}
}
if (geometry_shader) {
// Compile Geometry Shader
LOG_DEBUG(Render_OpenGL, "Compiling geometry shader...");
glShaderSource(geometry_shader_id, 1, &geometry_shader, nullptr);
glCompileShader(geometry_shader_id);
// Check Geometry Shader
glGetShaderiv(geometry_shader_id, GL_COMPILE_STATUS, &result);
glGetShaderiv(geometry_shader_id, GL_INFO_LOG_LENGTH, &info_log_length);
if (info_log_length > 1) {
std::vector<char> geometry_shader_error(info_log_length);
glGetShaderInfoLog(geometry_shader_id, info_log_length, nullptr,
&geometry_shader_error[0]);
if (result == GL_TRUE) {
LOG_DEBUG(Render_OpenGL, "%s", &geometry_shader_error[0]);
} else {
LOG_CRITICAL(Render_OpenGL, "Error compiling geometry shader:\n%s",
&geometry_shader_error[0]);
}
}
}
if (fragment_shader) {
// Compile Fragment Shader
LOG_DEBUG(Render_OpenGL, "Compiling fragment shader...");
glShaderSource(fragment_shader_id, 1, &fragment_shader, nullptr);
glCompileShader(fragment_shader_id);
// Check Fragment Shader
glGetShaderiv(fragment_shader_id, GL_COMPILE_STATUS, &result);
glGetShaderiv(fragment_shader_id, GL_INFO_LOG_LENGTH, &info_log_length);
if (info_log_length > 1) {
std::vector<char> fragment_shader_error(info_log_length);
glGetShaderInfoLog(fragment_shader_id, info_log_length, nullptr,
&fragment_shader_error[0]);
if (result == GL_TRUE) {
LOG_DEBUG(Render_OpenGL, "%s", &fragment_shader_error[0]);
} else {
LOG_CRITICAL(Render_OpenGL, "Error compiling fragment shader:\n%s",
&fragment_shader_error[0]);
}
}
}
// Link the program
LOG_DEBUG(Render_OpenGL, "Linking program...");
GLuint program_id = glCreateProgram();
if (vertex_shader) {
glAttachShader(program_id, vertex_shader_id);
}
if (geometry_shader) {
glAttachShader(program_id, geometry_shader_id);
}
if (fragment_shader) {
glAttachShader(program_id, fragment_shader_id);
}
if (!feedback_vars.empty()) {
auto varyings = feedback_vars;
glTransformFeedbackVaryings(program_id, static_cast<GLsizei>(feedback_vars.size()),
&varyings[0], GL_INTERLEAVED_ATTRIBS);
}
if (separable_program) {
glProgramParameteri(program_id, GL_PROGRAM_SEPARABLE, GL_TRUE);
}
glLinkProgram(program_id);
// Check the program
glGetProgramiv(program_id, GL_LINK_STATUS, &result);
glGetProgramiv(program_id, GL_INFO_LOG_LENGTH, &info_log_length);
if (info_log_length > 1) {
std::vector<char> program_error(info_log_length);
glGetProgramInfoLog(program_id, info_log_length, nullptr, &program_error[0]);
if (result == GL_TRUE) {
LOG_DEBUG(Render_OpenGL, "%s", &program_error[0]);
} else {
LOG_CRITICAL(Render_OpenGL, "Error linking shader:\n%s", &program_error[0]);
}
}
// If the program linking failed at least one of the shaders was probably bad
if (result == GL_FALSE) {
if (vertex_shader) {
LOG_CRITICAL(Render_OpenGL, "Vertex shader:\n%s", vertex_shader);
}
if (geometry_shader) {
LOG_CRITICAL(Render_OpenGL, "Geometry shader:\n%s", geometry_shader);
}
if (fragment_shader) {
LOG_CRITICAL(Render_OpenGL, "Fragment shader:\n%s", fragment_shader);
}
}
ASSERT_MSG(result == GL_TRUE, "Shader not linked");
if (vertex_shader) {
glDetachShader(program_id, vertex_shader_id);
glDeleteShader(vertex_shader_id);
}
if (geometry_shader) {
glDetachShader(program_id, geometry_shader_id);
glDeleteShader(geometry_shader_id);
}
if (fragment_shader) {
glDetachShader(program_id, fragment_shader_id);
glDeleteShader(fragment_shader_id);
}
return program_id;
return shader_id;
}
} // namespace GLShader

56
src/video_core/renderer_opengl/gl_shader_util.h
View File

@ -10,14 +10,54 @@
namespace GLShader {
/**
* Utility function to create and compile an OpenGL GLSL shader program (vertex + fragment shader)
* @param vertex_shader String of the GLSL vertex shader program
* @param geometry_shader String of the GLSL geometry shader program
* @param fragment_shader String of the GLSL fragment shader program
* @returns Handle of the newly created OpenGL shader object
* Utility function to create and compile an OpenGL GLSL shader
* @param source String of the GLSL shader program
* @param type Type of the shader (GL_VERTEX_SHADER, GL_GEOMETRY_SHADER or GL_FRAGMENT_SHADER)
*/
GLuint LoadProgram(const char* vertex_shader, const char* geometry_shader,
const char* fragment_shader, const std::vector<const char*>& feedback_vars = {},
bool separable_program = false);
GLuint LoadShader(const char* source, GLenum type);
/**
* Utility function to create and compile an OpenGL GLSL shader program (vertex + fragment shader)
* @param separable_program whether to create a separable program
* @param shaders ID of shaders to attach to the program
* @returns Handle of the newly created OpenGL program object
*/
template <typename... T>
GLuint LoadProgram(bool separable_program, T... shaders) {
// Link the program
NGLOG_DEBUG(Render_OpenGL, "Linking program...");
GLuint program_id = glCreateProgram();
((shaders == 0 ? (void)0 : glAttachShader(program_id, shaders)), ...);
if (separable_program) {
glProgramParameteri(program_id, GL_PROGRAM_SEPARABLE, GL_TRUE);
}
glLinkProgram(program_id);
// Check the program
GLint result = GL_FALSE;
GLint info_log_length;
glGetProgramiv(program_id, GL_LINK_STATUS, &result);
glGetProgramiv(program_id, GL_INFO_LOG_LENGTH, &info_log_length);
if (info_log_length > 1) {
std::string program_error(info_log_length, ' ');
glGetProgramInfoLog(program_id, info_log_length, nullptr, &program_error[0]);
if (result == GL_TRUE) {
NGLOG_DEBUG(Render_OpenGL, "{}", program_error);
} else {
NGLOG_ERROR(Render_OpenGL, "Error linking shader:\n{}", program_error);
}
}
ASSERT_MSG(result == GL_TRUE, "Shader not linked");
((shaders == 0 ? (void)0 : glDetachShader(program_id, shaders)), ...);
return program_id;
}
} // namespace GLShader