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RSDuck
2023-04-08 01:37:32 +02:00
parent f8fdc77e43
commit b11b5bf522
16 changed files with 3472 additions and 176 deletions
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144
src/OpenGLSupport.cpp
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@ -24,7 +24,9 @@ using Platform::LogLevel;
namespace OpenGL
{
bool BuildShaderProgram(const char* vs, const char* fs, GLuint* ids, const char* name)
#define checkGLError() if (glGetError() != GL_NO_ERROR) printf("error %d\n", __LINE__)
bool CompilerShader(GLuint& id, const char* source, const char* name, const char* type)
{
int len;
int res;
@ -35,61 +37,31 @@ bool BuildShaderProgram(const char* vs, const char* fs, GLuint* ids, const char*
return false;
}
ids[0] = glCreateShader(GL_VERTEX_SHADER);
len = strlen(vs);
glShaderSource(ids[0], 1, &vs, &len);
glCompileShader(ids[0]);
len = strlen(source);
glShaderSource(id, 1, &source, &len);
checkGLError();
glCompileShader(id);
checkGLError();
glGetShaderiv(ids[0], GL_COMPILE_STATUS, &res);
glGetShaderiv(id, GL_COMPILE_STATUS, &res);
checkGLError();
if (res != GL_TRUE)
{
glGetShaderiv(ids[0], GL_INFO_LOG_LENGTH, &res);
glGetShaderiv(id, GL_INFO_LOG_LENGTH, &res);
if (res < 1) res = 1024;
char* log = new char[res+1];
glGetShaderInfoLog(ids[0], res+1, NULL, log);
Log(LogLevel::Error, "OpenGL: failed to compile vertex shader %s: %s\n", name, log);
Log(LogLevel::Debug, "shader source:\n--\n%s\n--\n", vs);
glGetShaderInfoLog(id, res+1, NULL, log);
Log(LogLevel::Error, "OpenGL: failed to compile %s shader %s: %s\n", type, name, log);
Log(LogLevel::Debug, "shader source:\n--\n%s\n--\n", source);
delete[] log;
glDeleteShader(ids[0]);
return false;
}
ids[1] = glCreateShader(GL_FRAGMENT_SHADER);
len = strlen(fs);
glShaderSource(ids[1], 1, &fs, &len);
glCompileShader(ids[1]);
glGetShaderiv(ids[1], GL_COMPILE_STATUS, &res);
if (res != GL_TRUE)
{
glGetShaderiv(ids[1], GL_INFO_LOG_LENGTH, &res);
if (res < 1) res = 1024;
char* log = new char[res+1];
glGetShaderInfoLog(ids[1], res+1, NULL, log);
Log(LogLevel::Error, "OpenGL: failed to compile fragment shader %s: %s\n", name, log);
//printf("shader source:\n--\n%s\n--\n", fs);
delete[] log;
FILE* logf = fopen("shaderfail.log", "w");
fwrite(fs, len+1, 1, logf);
fclose(logf);
glDeleteShader(ids[0]);
glDeleteShader(ids[1]);
return false;
}
ids[2] = glCreateProgram();
glAttachShader(ids[2], ids[0]);
glAttachShader(ids[2], ids[1]);
return true;
}
bool LinkShaderProgram(GLuint* ids)
bool LinkProgram(GLuint& result, GLuint* ids, int numIds)
{
int res;
@ -99,46 +71,100 @@ bool LinkShaderProgram(GLuint* ids)
return false;
}
glLinkProgram(ids[2]);
for (int i = 0; i < numIds; i++)
{
glAttachShader(result, ids[i]);
checkGLError();
}
glDetachShader(ids[2], ids[0]);
glDetachShader(ids[2], ids[1]);
glLinkProgram(result);
glDeleteShader(ids[0]);
glDeleteShader(ids[1]);
for (int i = 0; i < numIds; i++)
glDetachShader(result, ids[i]);
glGetProgramiv(ids[2], GL_LINK_STATUS, &res);
glGetProgramiv(result, GL_LINK_STATUS, &res);
if (res != GL_TRUE)
{
glGetProgramiv(ids[2], GL_INFO_LOG_LENGTH, &res);
glGetProgramiv(result, GL_INFO_LOG_LENGTH, &res);
if (res < 1) res = 1024;
char* log = new char[res+1];
glGetProgramInfoLog(ids[2], res+1, NULL, log);
glGetProgramInfoLog(result, res+1, NULL, log);
Log(LogLevel::Error, "OpenGL: failed to link shader program: %s\n", log);
delete[] log;
glDeleteProgram(ids[2]);
return false;
}
return true;
}
void DeleteShaderProgram(GLuint* ids)
bool CompileComputeProgram(GLuint& result, const char* source, const char* name)
{
GLuint shader = glCreateShader(GL_COMPUTE_SHADER);
bool linkingSucess = false;
if (glDeleteProgram)
{ // If OpenGL isn't loaded, then there's no shader program to delete
glDeleteProgram(ids[2]);
goto error;
}
result = glCreateProgram();
printf("compiling %s", name);
if (!CompilerShader(shader, source, name, "compute"))
goto error;
linkingSucess = LinkProgram(result, &shader, 1);
error:
glDeleteShader(shader);
if (!linkingSucess)
glDeleteProgram(result);
return linkingSucess;
}
void UseShaderProgram(GLuint* ids)
bool CompileVertexFragmentProgram(GLuint& result,
const char* vs, const char* fs,
const char* name,
const std::initializer_list<AttributeTarget>& vertexInAttrs,
const std::initializer_list<AttributeTarget>& fragmentOutAttrs)
{
if (glUseProgram)
{ // If OpenGL isn't loaded, then there's no shader program to use
glUseProgram(ids[2]);
GLuint shaders[2] =
{
glCreateShader(GL_VERTEX_SHADER),
glCreateShader(GL_FRAGMENT_SHADER)
};
result = glCreateProgram();
bool linkingSucess = false;
if (!CompilerShader(shaders[0], vs, name, "vertex"))
goto error;
if (!CompilerShader(shaders[1], fs, name, "fragment"))
goto error;
for (const AttributeTarget& target : vertexInAttrs)
{
glBindAttribLocation(result, target.Location, target.Name);
}
for (const AttributeTarget& target : fragmentOutAttrs)
{
glBindFragDataLocation(result, target.Location, target.Name);
}
linkingSucess = LinkProgram(result, shaders, 2);
error:
glDeleteShader(shaders[1]);
glDeleteShader(shaders[0]);
if (!linkingSucess)
glDeleteProgram(result);
return linkingSucess;
}
}