bool CgShaderProgramGL::setConstant(const io::stringc &Name, const f32* Buffer, s32 Count)
{
if (!Buffer)
return false;
/* Get top-level parameter */
CGparameter Param = cgGetNamedParameter(cgProgram_, Name.c_str());
if (!Param)
return false;
/* Get array parameter */
if (cgGetParameterType(Param) != CG_ARRAY)
return false;
s32 ArraySize = cgGetArraySize(Param, 0);
for (s32 i = 0; i < ArraySize; ++i)
{
/* Get array element parameter */
CGparameter ElementParam = cgGetArrayParameter(Param, i);
switch (cgGetParameterType(ElementParam))
{
case CG_FLOAT:
cgGLSetParameterArray1f(Param, 0, Count, Buffer);
return true;
case CG_FLOAT2:
cgGLSetParameterArray2f(Param, 0, Count/2, Buffer);
return true;
case CG_FLOAT3:
cgGLSetParameterArray3f(Param, 0, Count/3, Buffer);
return true;
case CG_FLOAT4:
cgGLSetParameterArray4f(Param, 0, Count/4, Buffer);
return true;
case CG_FLOAT4x4:
cgGLSetMatrixParameterArrayfc(Param, 0, Count/16, Buffer);
return true;
case CG_STRUCT:
{
/* Get structure field parameter */
CGparameter FieldParam = cgGetFirstStructParameter(ElementParam);
while (FieldParam)
{
switch (cgGetParameterType(FieldParam))
{
case CG_FLOAT:
cgGLSetParameter1f(FieldParam, *Buffer);
Buffer += 1;
break;
case CG_FLOAT2:
cgGLSetParameter2fv(FieldParam, Buffer);
Buffer += 2;
break;
case CG_FLOAT3:
cgGLSetParameter3fv(FieldParam, Buffer);
Buffer += 3;
break;
case CG_FLOAT4:
cgGLSetParameter4fv(FieldParam, Buffer);
Buffer += 4;
break;
case CG_FLOAT4x4:
cgGLSetMatrixParameterfc(FieldParam, Buffer);
Buffer += 16;
break;
case CG_INT:
cgSetParameter1i(FieldParam, *((s32*)Buffer));
Buffer += 1;
break;
default:
break;
}
FieldParam = cgGetNextParameter(FieldParam);
}
}
break;
default:
break;
}
}
return true;
}
static void gl_cg_set_uniform_parameter(
void *data,
struct uniform_info *param,
void *uniform_data)
{
CGparameter location;
cg_shader_data_t *cg = (cg_shader_data_t*)data;
if (!param || !param->enabled)
return;
if (param->lookup.enable)
{
char ident[64];
CGprogram prog = 0;
switch (param->lookup.type)
{
case SHADER_PROGRAM_VERTEX:
prog = cg->prg[param->lookup.idx].vprg;
break;
case SHADER_PROGRAM_FRAGMENT:
default:
prog = cg->prg[param->lookup.idx].fprg;
break;
}
if (param->lookup.add_prefix)
snprintf(ident, sizeof(ident), "IN.%s", param->lookup.ident);
location = cgGetNamedParameter(prog, param->lookup.add_prefix ? ident : param->lookup.ident);
}
else
{
struct uniform_cg *cg_param = (struct uniform_cg*)uniform_data;
location = cg_param->loc;
}
switch (param->type)
{
case UNIFORM_1F:
cgGLSetParameter1f(location, param->result.f.v0);
break;
case UNIFORM_2F:
cgGLSetParameter2f(location, param->result.f.v0, param->result.f.v1);
break;
case UNIFORM_3F:
cgGLSetParameter3f(location, param->result.f.v0, param->result.f.v1,
param->result.f.v2);
break;
case UNIFORM_4F:
cgGLSetParameter4f(location, param->result.f.v0, param->result.f.v1,
param->result.f.v2, param->result.f.v3);
break;
case UNIFORM_1FV:
cgGLSetParameter1fv(location, param->result.floatv);
break;
case UNIFORM_2FV:
cgGLSetParameter2fv(location, param->result.floatv);
break;
case UNIFORM_3FV:
cgGLSetParameter3fv(location, param->result.floatv);
break;
case UNIFORM_4FV:
cgGLSetParameter3fv(location, param->result.floatv);
break;
case UNIFORM_1I:
/* Unimplemented - Cg limitation */
break;
}
}
