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obs-StreamFX/source/gs-effect.cpp
Michael Fabian 'Xaymar' Dirks e0e2d9fe80 project: Improve Linux support (#27 and #13) 
While Linux was not an original goal of the project, it should still be supported out of the box. Therefore a number of changes are contained in this changeset:

- All C++ .h files were renamed to .hpp.
- All C includes (<....h>) were replaced with C++ includes (<c...>) and missing includes were added.
- std::memset and std::memcpy was replaced with memset and memcpy.
- All anonymous structs were removed where necessary.
- `extern "C"` was removed where it wasn't needed.
- #pragma warning was placed behind an #ifdef _MSC_VER
- The macros for `min`, `max` and `clamp` were removed as they were not used.
- `-fpedantic` was added to the GCC flags for bitmask support.
- `gs::rendertarget_op` is now declared before use.
- std::exception(const char*) was replaced with std::runtime_error(const char*).
- Added aligned_alloc and aligned_free macros for GCC and MSVC support.
- Replaced use of `sprintf_s` with `snprintf`.
- Placed additional guards around windows only code.

Additonally some changes were made that do not affect Linux:
- `NOMINMAX` and `NOINOUT` were removed.

Fixes: #27
Fixes: #13
2019-01-14 22:31:35 +01:00

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/*
* Modern effects for a modern Streamer
* Copyright (C) 2017 Michael Fabian Dirks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "gs-effect.hpp"
#include <stdexcept>
// OBS
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4201)
#endif
#include <obs.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif
gs::effect::effect() : m_effect(nullptr) {}
gs::effect::effect(std::string file)
{
obs_enter_graphics();
char* errorMessage = nullptr;
m_effect = gs_effect_create_from_file(file.c_str(), &errorMessage);
if (!m_effect || errorMessage) {
std::string error = "Generic Error";
if (errorMessage) {
error = std::string(errorMessage);
bfree((void*)errorMessage);
}
obs_leave_graphics();
throw std::runtime_error(error);
}
obs_leave_graphics();
}
gs::effect::effect(std::string code, std::string name)
{
obs_enter_graphics();
char* errorMessage = nullptr;
m_effect = gs_effect_create(code.c_str(), name.c_str(), &errorMessage);
if (!m_effect || errorMessage) {
std::string error = "Generic Error";
if (errorMessage) {
error = std::string(errorMessage);
bfree((void*)errorMessage);
}
obs_leave_graphics();
throw std::runtime_error(error);
}
obs_leave_graphics();
}
gs::effect::~effect()
{
obs_enter_graphics();
gs_effect_destroy(m_effect);
obs_leave_graphics();
}
gs_effect_t* gs::effect::get_object()
{
return m_effect;
}
size_t gs::effect::count_parameters()
{
return (size_t)gs_effect_get_num_params(m_effect);
}
std::list<gs::effect_parameter> gs::effect::get_parameters()
{
size_t num = gs_effect_get_num_params(m_effect);
std::list<gs::effect_parameter> ps;
for (size_t idx = 0; idx < num; idx++) {
ps.emplace_back(get_parameter(idx));
}
return ps;
}
gs::effect_parameter gs::effect::get_parameter(size_t idx)
{
gs_eparam_t* param = gs_effect_get_param_by_idx(m_effect, idx);
if (!param)
throw std::invalid_argument("parameter with index not found");
return effect_parameter(param);
}
bool gs::effect::has_parameter(std::string name)
{
gs_eparam_t* param = gs_effect_get_param_by_name(m_effect, name.c_str());
return (param != nullptr);
}
bool gs::effect::has_parameter(std::string name, effect_parameter::type type)
{
gs_eparam_t* param = gs_effect_get_param_by_name(m_effect, name.c_str());
if (param == nullptr)
return false;
gs::effect_parameter eprm(param);
return eprm.get_type() == type;
}
gs::effect_parameter gs::effect::get_parameter(std::string name)
{
gs_eparam_t* param = gs_effect_get_param_by_name(m_effect, name.c_str());
if (!param)
throw std::invalid_argument("parameter with name not found");
return effect_parameter(param);
}
gs::effect_parameter::effect_parameter(gs_eparam_t* param)
{
if (!param)
throw std::invalid_argument("param is null");
m_param = param;
gs_effect_get_param_info(m_param, &m_paramInfo);
}
std::string gs::effect_parameter::get_name()
{
return m_paramInfo.name;
}
gs::effect_parameter::type gs::effect_parameter::get_type()
{
switch (m_paramInfo.type) {
case GS_SHADER_PARAM_BOOL:
return type::Boolean;
case GS_SHADER_PARAM_FLOAT:
return type::Float;
case GS_SHADER_PARAM_VEC2:
return type::Float2;
case GS_SHADER_PARAM_VEC3:
return type::Float3;
case GS_SHADER_PARAM_VEC4:
return type::Float4;
case GS_SHADER_PARAM_INT:
return type::Integer;
case GS_SHADER_PARAM_INT2:
return type::Integer2;
case GS_SHADER_PARAM_INT3:
return type::Integer3;
case GS_SHADER_PARAM_INT4:
return type::Integer4;
case GS_SHADER_PARAM_MATRIX4X4:
return type::Matrix;
case GS_SHADER_PARAM_TEXTURE:
return type::Texture;
//case GS_SHADER_PARAM_STRING:
// return Type::String;
default:
case GS_SHADER_PARAM_UNKNOWN:
return type::Unknown;
}
}
void gs::effect_parameter::set_bool(bool v)
{
if (get_type() != type::Boolean)
throw std::bad_cast();
gs_effect_set_bool(m_param, v);
}
void gs::effect_parameter::set_bool_array(bool v[], size_t sz)
{
if (get_type() != type::Boolean)
throw std::bad_cast();
gs_effect_set_val(m_param, v, sz);
}
void gs::effect_parameter::set_float(float_t x)
{
if (get_type() != type::Float)
throw std::bad_cast();
gs_effect_set_float(m_param, x);
}
void gs::effect_parameter::set_float2(vec2& v)
{
if (get_type() != type::Float2)
throw std::bad_cast();
gs_effect_set_vec2(m_param, &v);
}
void gs::effect_parameter::set_float2(float_t x, float_t y)
{
if (get_type() != type::Float2)
throw std::bad_cast();
vec2 v = {x, y};
gs_effect_set_vec2(m_param, &v);
}
void gs::effect_parameter::set_float3(vec3& v)
{
if (get_type() != type::Float3)
throw std::bad_cast();
gs_effect_set_vec3(m_param, &v);
}
void gs::effect_parameter::set_float3(float_t x, float_t y, float_t z)
{
if (get_type() != type::Float3)
throw std::bad_cast();
vec3 v = {x, y, z};
gs_effect_set_vec3(m_param, &v);
}
void gs::effect_parameter::set_float4(vec4& v)
{
if (get_type() != type::Float4)
throw std::bad_cast();
gs_effect_set_vec4(m_param, &v);
}
void gs::effect_parameter::set_float4(float_t x, float_t y, float_t z, float_t w)
{
if (get_type() != type::Float4)
throw std::bad_cast();
vec4 v = {x, y, z, w};
gs_effect_set_vec4(m_param, &v);
}
void gs::effect_parameter::set_float_array(float_t v[], size_t sz)
{
if ((get_type() != type::Float) && (get_type() != type::Float2) && (get_type() != type::Float3)
&& (get_type() != type::Float4))
throw std::bad_cast();
gs_effect_set_val(m_param, v, sizeof(float_t) * sz);
}
void gs::effect_parameter::set_int(int32_t x)
{
if ((get_type() != type::Integer) && (get_type() != type::Unknown))
throw std::bad_cast();
gs_effect_set_int(m_param, x);
}
void gs::effect_parameter::set_int2(int32_t x, int32_t y)
{
if ((get_type() != type::Integer2) && (get_type() != type::Unknown))
throw std::bad_cast();
int32_t v[2] = {x, y};
gs_effect_set_val(m_param, v, sizeof(int) * 2);
}
void gs::effect_parameter::set_int3(int32_t x, int32_t y, int32_t z)
{
if ((get_type() != type::Integer3) && (get_type() != type::Unknown))
throw std::bad_cast();
int32_t v[3] = {x, y, z};
gs_effect_set_val(m_param, v, sizeof(int) * 3);
}
void gs::effect_parameter::set_int4(int32_t x, int32_t y, int32_t z, int32_t w)
{
if ((get_type() != type::Integer4) && (get_type() != type::Unknown))
throw std::bad_cast();
int32_t v[4] = {x, y, z, w};
gs_effect_set_val(m_param, v, sizeof(int) * 4);
}
void gs::effect_parameter::set_int_array(int32_t v[], size_t sz)
{
if ((get_type() != type::Integer) && (get_type() != type::Integer2) && (get_type() != type::Integer3)
&& (get_type() != type::Integer4) && (get_type() != type::Unknown))
throw std::bad_cast();
gs_effect_set_val(m_param, v, sizeof(int) * sz);
}
void gs::effect_parameter::set_matrix(matrix4& v)
{
if (get_type() != type::Matrix)
throw std::bad_cast();
gs_effect_set_matrix4(m_param, &v);
}
void gs::effect_parameter::set_texture(std::shared_ptr<gs::texture> v)
{
if (get_type() != type::Texture)
throw std::bad_cast();
gs_effect_set_texture(m_param, v->get_object());
}
void gs::effect_parameter::set_texture(gs_texture_t* v)
{
if (get_type() != type::Texture)
throw std::bad_cast();
gs_effect_set_texture(m_param, v);
}
void gs::effect_parameter::set_sampler(std::shared_ptr<gs::sampler> v)
{
if (get_type() != type::Texture)
throw std::bad_cast();
gs_effect_set_next_sampler(m_param, v->get_object());
}
void gs::effect_parameter::set_sampler(gs_sampler_state* v)
{
if (get_type() != type::Texture)
throw std::bad_cast();
gs_effect_set_next_sampler(m_param, v);
}
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