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gl_shader_util: Sync latest version with Citra.

This commit is contained in:
bunnei 2018-03-19 22:57:22 -04:00
parent d7b1ebe4a8
commit 9c468e0c55
3 changed files with 111 additions and 41 deletions
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78
src/video_core/renderer_opengl/gl_shader_util.cpp
View File

@ -10,15 +10,18 @@
namespace GLShader {
GLuint LoadProgram(const char* vertex_shader, const char* 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) {
// Create the shaders
GLuint vertex_shader_id = glCreateShader(GL_VERTEX_SHADER);
GLuint fragment_shader_id = glCreateShader(GL_FRAGMENT_SHADER);
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;
GLint result = GL_FALSE;
int info_log_length;
if (vertex_shader) {
// Compile Vertex Shader
LOG_DEBUG(Render_OpenGL, "Compiling vertex shader...");
@ -35,10 +38,37 @@ GLuint LoadProgram(const char* vertex_shader, const char* fragment_shader) {
if (result == GL_TRUE) {
LOG_DEBUG(Render_OpenGL, "%s", &vertex_shader_error[0]);
} else {
LOG_ERROR(Render_OpenGL, "Error compiling vertex shader:\n%s", &vertex_shader_error[0]);
LOG_ERROR(Render_OpenGL, "Error compiling vertex shader:\n%s",
&vertex_shader_error[0]);
}
}
}
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_ERROR(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...");
@ -51,7 +81,8 @@ GLuint LoadProgram(const char* vertex_shader, const char* fragment_shader) {
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]);
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 {
@ -59,13 +90,31 @@ GLuint LoadProgram(const char* vertex_shader, const char* fragment_shader) {
&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);
@ -85,13 +134,30 @@ GLuint LoadProgram(const char* vertex_shader, const char* fragment_shader) {
// If the program linking failed at least one of the shaders was probably bad
if (result == GL_FALSE) {
if (vertex_shader) {
LOG_ERROR(Render_OpenGL, "Vertex shader:\n%s", vertex_shader);
}
if (geometry_shader) {
LOG_ERROR(Render_OpenGL, "Geometry shader:\n%s", geometry_shader);
}
if (fragment_shader) {
LOG_ERROR(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;
}

6
src/video_core/renderer_opengl/gl_shader_util.h
View File

@ -4,6 +4,7 @@
#pragma once
#include <vector>
#include <glad/glad.h>
namespace GLShader {
@ -11,9 +12,12 @@ 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
*/
GLuint LoadProgram(const char* vertex_shader, const char* 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);
} // namespace GLShader

2
src/video_core/renderer_opengl/renderer_opengl.cpp
View File

@ -318,7 +318,7 @@ void RendererOpenGL::InitOpenGLObjects() {
0.0f);
// Link shaders and get variable locations
shader.Create(vertex_shader, fragment_shader);
shader.Create(vertex_shader, nullptr, fragment_shader);
state.draw.shader_program = shader.handle;
state.Apply();
uniform_modelview_matrix = glGetUniformLocation(shader.handle, "modelview_matrix");