void CopyProgramFragDataBindings(const GLHookSet &gl, GLuint progsrc, GLuint progdst,
ShaderReflection *refl)
{
uint64_t used = 0;
// copy over fragdata bindings
for(size_t i = 0; i < refl->outputSignature.size(); i++)
{
// only look at colour outputs (should be the only outputs from fs)
if(refl->outputSignature[i].systemValue != ShaderBuiltin::ColorOutput)
continue;
if(!strncmp("gl_", refl->outputSignature[i].varName.c_str(), 3))
continue; // GL_INVALID_OPERATION if name starts with reserved gl_ prefix
GLint idx = gl.glGetFragDataLocation(progsrc, refl->outputSignature[i].varName.c_str());
if(idx >= 0)
{
uint64_t mask = 1ULL << idx;
if(used & mask)
{
RDCWARN("Multiple signatures bound to output %zu, ignoring %s", i,
refl->outputSignature[i].varName.c_str());
continue;
}
used |= mask;
if(gl.glBindFragDataLocation)
{
gl.glBindFragDataLocation(progdst, (GLuint)idx, refl->outputSignature[i].varName.c_str());
}
else
{
// glBindFragDataLocation is not core GLES, but it is in GL_EXT_blend_func_extended
// TODO what to do if that extension is not supported
RDCERR("glBindFragDataLocation is not supported!");
}
}
}
}
void SerialiseProgramBindings(SerialiserType &ser, CaptureState state, const GLHookSet &gl,
GLuint prog)
{
std::vector<ProgramBinding> InputBindings;
std::vector<ProgramBinding> OutputBindings;
if(ser.IsWriting())
{
char buf[128] = {};
for(int sigType = 0; sigType < 2; sigType++)
{
GLenum sigEnum = (sigType == 0 ? eGL_PROGRAM_INPUT : eGL_PROGRAM_OUTPUT);
std::vector<ProgramBinding> &bindings = (sigType == 0 ? InputBindings : OutputBindings);
int32_t NumAttributes = 0;
gl.glGetProgramInterfaceiv(prog, sigEnum, eGL_ACTIVE_RESOURCES, (GLint *)&NumAttributes);
bindings.reserve(NumAttributes);
for(GLint i = 0; i < NumAttributes; i++)
{
gl.glGetProgramResourceName(prog, sigEnum, i, 128, NULL, buf);
ProgramBinding bind;
bind.Name = buf;
if(sigType == 0)
bind.Binding = gl.glGetAttribLocation(prog, buf);
else
bind.Binding = gl.glGetFragDataLocation(prog, buf);
bindings.push_back(bind);
}
}
}
SERIALISE_ELEMENT(InputBindings);
SERIALISE_ELEMENT(OutputBindings);
if(ser.IsReading() && IsReplayMode(state))
{
for(int sigType = 0; sigType < 2; sigType++)
{
const std::vector<ProgramBinding> &bindings = (sigType == 0 ? InputBindings : OutputBindings);
uint64_t used = 0;
for(const ProgramBinding &bind : bindings)
{
if(bind.Binding >= 0)
{
uint64_t mask = 1ULL << bind.Binding;
if(used & mask)
{
RDCWARN("Multiple %s items bound to location %d, ignoring %s",
sigType == 0 ? "attrib" : "fragdata", bind.Binding, bind.Name.c_str());
continue;
}
used |= mask;
if(!strncmp("gl_", bind.Name.c_str(), 3))
continue; // GL_INVALID_OPERATION if name starts with reserved gl_ prefix (for both
// glBindAttribLocation and glBindFragDataLocation)
if(sigType == 0)
{
gl.glBindAttribLocation(prog, (GLuint)bind.Binding, bind.Name.c_str());
}
else
{
if(gl.glBindFragDataLocation)
{
gl.glBindFragDataLocation(prog, (GLuint)bind.Binding, bind.Name.c_str());
}
else
{
// glBindFragDataLocation is not core GLES, but it is in GL_EXT_blend_func_extended
// TODO what to do if that extension is not supported
RDCERR("glBindFragDataLocation is not supported!");
}
}
}
}
}
}
}