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gfx-shader: Support for filters and transitions

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Due to render logic required for transitions, some of the render logic is split into an additional function called 'prepare_render'. Additionally the storage for some temporary objects has been removed as it these objects usually do not outlive their rendering time anyway.

Related: #96 #95 #94 #5
This commit is contained in:
Michael Fabian 'Xaymar' Dirks 2020-03-28 18:37:00 +01:00
parent e66acbeb98
commit 6ae9904e13
2 changed files with 56 additions and 20 deletions
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68
source/gfx/shader/gfx-shader.cpp
View file

@ -32,7 +32,7 @@
#define ST_PARAMETERS ST ".Parameters"
gfx::shader::shader::shader(obs_source_t* self, shader_mode mode)
: _self(self), _mode(mode), _base_width(1), _base_height(1), _input_a(), _input_b(),
: _self(self), _mode(mode), _base_width(1), _base_height(1),
_shader(), _shader_file(), _shader_tech("Draw"), _shader_file_mt(), _shader_file_sz(), _shader_file_tick(0),
@ -320,11 +320,7 @@ uint32_t gfx::shader::shader::width()
case size_type::Pixel:
return std::clamp(static_cast<uint32_t>(_width_value), 1u, 8192u);
case size_type::Percent:
if (_input_a) {
return std::clamp(static_cast<uint32_t>(_width_value * _input_a->get_width()), 1u, 8192u);
} else {
return std::clamp(static_cast<uint32_t>(_width_value * _base_width), 1u, 8192u);
}
return std::clamp(static_cast<uint32_t>(_width_value * _base_width), 1u, 8192u);
}
default:
return 0;
@ -348,11 +344,7 @@ uint32_t gfx::shader::shader::height()
case size_type::Pixel:
return std::clamp(static_cast<uint32_t>(_height_value), 1u, 8192u);
case size_type::Percent:
if (_input_a) {
return std::clamp(static_cast<uint32_t>(_height_value * _input_a->get_height()), 1u, 8192u);
} else {
return std::clamp(static_cast<uint32_t>(_height_value * _base_height), 1u, 8192u);
}
return std::clamp(static_cast<uint32_t>(_height_value * _base_height), 1u, 8192u);
}
default:
return 0;
@ -374,14 +366,11 @@ bool gfx::shader::shader::tick(float_t time)
return false;
}
void gfx::shader::shader::render()
void gfx::shader::shader::prepare_render()
{
if (!_shader)
return;
uint32_t szw = width();
uint32_t szh = height();
for (auto kv : _shader_params) {
kv.second->assign();
}
@ -403,9 +392,15 @@ void gfx::shader::shader::render()
1.0f / static_cast<float_t>(width()), 1.0f / static_cast<float_t>(height()));
}
}
}
void gfx::shader::shader::render()
{
if (!_shader)
return;
while (gs_effect_loop(_shader.get_object(), _shader_tech.c_str())) {
gs_draw_sprite(nullptr, 0, szw, szh);
gs_draw_sprite(nullptr, 0, width(), height());
}
}
@ -417,10 +412,47 @@ void gfx::shader::shader::set_size(uint32_t w, uint32_t h)
void gfx::shader::shader::set_input_a(std::shared_ptr<gs::texture> tex)
{
_input_a = tex;
if (!_shader)
return;
if (gs::effect_parameter el = _shader.get_parameter("InputA"); el != nullptr) {
if (el.get_type() == gs::effect_parameter::type::Texture) {
el.set_texture(tex);
}
}
}
void gfx::shader::shader::set_input_b(std::shared_ptr<gs::texture> tex)
{
_input_b = tex;
if (!_shader)
return;
if (gs::effect_parameter el = _shader.get_parameter("InputB"); el != nullptr) {
if (el.get_type() == gs::effect_parameter::type::Texture) {
el.set_texture(tex);
}
}
}
void gfx::shader::shader::set_transition_time(float_t t)
{
if (!_shader)
return;
if (gs::effect_parameter el = _shader.get_parameter("TransitionTime"); el != nullptr) {
if (el.get_type() == gs::effect_parameter::type::Float) {
el.set_float(t);
}
}
}
void gfx::shader::shader::set_transition_size(uint32_t w, uint32_t h)
{
if (!_shader)
return;
if (gs::effect_parameter el = _shader.get_parameter("TransitionSize"); el != nullptr) {
if (el.get_type() == gs::effect_parameter::type::Integer2) {
el.set_int2(w, h);
}
}
}

8
source/gfx/shader/gfx-shader.hpp
View file

@ -59,8 +59,6 @@ namespace gfx {
shader_mode _mode;
uint32_t _base_width;
uint32_t _base_height;
std::shared_ptr<gs::texture> _input_a;
std::shared_ptr<gs::texture> _input_b;
// Shader
gs::effect _shader;
@ -107,6 +105,8 @@ namespace gfx {
bool tick(float_t time);
void prepare_render();
void render();
public:
@ -115,6 +115,10 @@ namespace gfx {
void set_input_a(std::shared_ptr<gs::texture> tex);
void set_input_b(std::shared_ptr<gs::texture> tex);
void set_transition_time(float_t t);
void set_transition_size(uint32_t w, uint32_t h);
};
} // namespace shader
} // namespace gfx