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obs-StreamFX/source/gfx/gfx-util.cpp
Michael Fabian 'Xaymar' Dirks 8aa8745a3a gfx/util: Move draw_fullscreen_triangle here for consistency
2023-04-05 18:58:56 +02:00

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// Copyright (c) 2021 Michael Fabian Dirks <info@xaymar.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#include "gfx-util.hpp"
#include "graphics/matrix4.h"
#include "obs/gs/gs-helper.hpp"
#include "plugin.hpp"
#include "util/util-logging.hpp"
#include "warning-disable.hpp"
#include <mutex>
#include "warning-enable.hpp"
#ifdef _DEBUG
#define ST_PREFIX "<%s> "
#define D_LOG_ERROR(x, ...) P_LOG_ERROR(ST_PREFIX##x, __FUNCTION_SIG__, __VA_ARGS__)
#define D_LOG_WARNING(x, ...) P_LOG_WARN(ST_PREFIX##x, __FUNCTION_SIG__, __VA_ARGS__)
#define D_LOG_INFO(x, ...) P_LOG_INFO(ST_PREFIX##x, __FUNCTION_SIG__, __VA_ARGS__)
#define D_LOG_DEBUG(x, ...) P_LOG_DEBUG(ST_PREFIX##x, __FUNCTION_SIG__, __VA_ARGS__)
#else
#define ST_PREFIX "<gfx::debug> "
#define D_LOG_ERROR(...) P_LOG_ERROR(ST_PREFIX __VA_ARGS__)
#define D_LOG_WARNING(...) P_LOG_WARN(ST_PREFIX __VA_ARGS__)
#define D_LOG_INFO(...) P_LOG_INFO(ST_PREFIX __VA_ARGS__)
#define D_LOG_DEBUG(...) P_LOG_DEBUG(ST_PREFIX __VA_ARGS__)
#endif
std::shared_ptr<streamfx::gfx::util> streamfx::gfx::util::get()
{
static std::weak_ptr<streamfx::gfx::util> instance;
static std::mutex lock;
std::unique_lock<std::mutex> ul(lock);
if (instance.expired()) {
auto hard_instance = std::shared_ptr<streamfx::gfx::util>(new streamfx::gfx::util());
instance = hard_instance;
return hard_instance;
}
return instance.lock();
}
streamfx::gfx::util::util()
{
{
std::filesystem::path file = ::streamfx::data_file_path("effects/standard.effect");
try {
_effect = std::make_shared<::streamfx::obs::gs::effect>(file);
} catch (...) {
D_LOG_ERROR("Failed to load '%s'.", file.generic_u8string().c_str());
}
}
}
streamfx::gfx::util::~util()
{
obs::gs::context gctx{};
_point_vb.reset();
_line_vb.reset();
_arrow_vb.reset();
_quad_vb.reset();
}
void streamfx::gfx::util::draw_point(float x, float y, uint32_t color)
{
obs::gs::context gctx{};
if (!_point_vb) {
_point_vb = std::make_shared<obs::gs::vertex_buffer>(uint32_t{1}, uint8_t{1});
}
{
auto vtx = _point_vb->at(0);
vec3_set(vtx.position, x, y, 0.);
*vtx.color = color;
}
gs_load_indexbuffer(nullptr);
gs_load_vertexbuffer(_point_vb->update(true));
while (gs_effect_loop(_effect->get_object(), "Color")) {
gs_draw(GS_POINTS, 0, 1);
}
gs_load_vertexbuffer(nullptr);
}
void streamfx::gfx::util::draw_line(float x, float y, float x2, float y2, uint32_t color /*= 0xFFFFFFFF*/)
{
obs::gs::context gctx{};
if (!_line_vb) {
_line_vb = std::make_shared<obs::gs::vertex_buffer>(uint32_t{2}, uint8_t{1});
}
{
auto vtx = _line_vb->at(0);
vec3_set(vtx.position, x, y, 0.);
*vtx.color = color;
}
{
auto vtx = _line_vb->at(1);
vec3_set(vtx.position, x2, y2, 0.);
*vtx.color = color;
}
gs_load_indexbuffer(nullptr);
gs_load_vertexbuffer(_line_vb->update(true));
while (gs_effect_loop(_effect->get_object(), "Color")) {
gs_draw(GS_LINES, 0, 2);
}
gs_load_vertexbuffer(nullptr);
}
void streamfx::gfx::util::draw_arrow(float x, float y, float x2, float y2, float w /*= 0.*/,
uint32_t color /*= 0xFFFFFFFF*/)
{
obs::gs::context gctx{};
if (!_arrow_vb) {
_arrow_vb = std::make_shared<obs::gs::vertex_buffer>(uint32_t{5}, uint8_t{1});
}
float dx = x2 - x;
float dy = y2 - y;
float ang = atan2(-dx, dy);
float len = sqrt(dx * dx + dy * dy);
if (abs(w) <= 1) {
w = len / 3.f;
}
matrix4 rotator;
matrix4_identity(&rotator);
matrix4_rotate_aa4f(&rotator, &rotator, 0, 0, 1, ang);
vec3 offset;
vec3_set(&offset, x, y, 0.);
{
auto vtx = _arrow_vb->at(0);
vec3_set(vtx.position, 0, 0, 0.);
vec3_transform(vtx.position, vtx.position, &rotator);
vec3_add(vtx.position, vtx.position, &offset);
*vtx.color = color;
}
{
auto vtx = _arrow_vb->at(1);
vec3_set(vtx.position, 0, len, 0.);
vec3_transform(vtx.position, vtx.position, &rotator);
vec3_add(vtx.position, vtx.position, &offset);
*vtx.color = color;
}
{
auto vtx = _arrow_vb->at(2);
vec3_set(vtx.position, -w, len - w, 0.);
vec3_transform(vtx.position, vtx.position, &rotator);
vec3_add(vtx.position, vtx.position, &offset);
*vtx.color = color;
}
{
auto vtx = _arrow_vb->at(3);
vec3_set(vtx.position, w, len - w, 0.);
vec3_transform(vtx.position, vtx.position, &rotator);
vec3_add(vtx.position, vtx.position, &offset);
*vtx.color = color;
}
{
auto vtx = _arrow_vb->at(4);
vec3_set(vtx.position, 0, len, 0.);
vec3_transform(vtx.position, vtx.position, &rotator);
vec3_add(vtx.position, vtx.position, &offset);
*vtx.color = color;
}
gs_load_indexbuffer(nullptr);
gs_load_vertexbuffer(_arrow_vb->update(true));
while (gs_effect_loop(_effect->get_object(), "Color")) {
gs_draw(GS_LINESTRIP, 0, 5);
}
gs_load_vertexbuffer(nullptr);
}
void streamfx::gfx::util::draw_rectangle(float x, float y, float w, float h, bool frame,
uint32_t color /*= 0xFFFFFFFF*/)
{
obs::gs::context gctx{};
if (!_quad_vb) {
_quad_vb = std::make_shared<obs::gs::vertex_buffer>(uint32_t{5}, uint8_t{1});
}
if (frame) {
{
auto vtx = _quad_vb->at(0);
vec3_set(vtx.position, x, y, 0.);
*vtx.color = color;
}
{
auto vtx = _quad_vb->at(1);
vec3_set(vtx.position, x + w, y, 0.);
*vtx.color = color;
}
{
auto vtx = _quad_vb->at(2);
vec3_set(vtx.position, x + w, y + h, 0.);
*vtx.color = color;
}
{
auto vtx = _quad_vb->at(3);
vec3_set(vtx.position, x, y + h, 0.);
*vtx.color = color;
}
{
auto vtx = _quad_vb->at(4);
vec3_set(vtx.position, x, y, 0.);
*vtx.color = color;
}
gs_load_indexbuffer(nullptr);
gs_load_vertexbuffer(_quad_vb->update(true));
while (gs_effect_loop(_effect->get_object(), "Color")) {
gs_draw(GS_LINESTRIP, 0, 5);
}
gs_load_vertexbuffer(nullptr);
} else {
{
auto vtx = _quad_vb->at(0);
vec3_set(vtx.position, x, y, 0.);
*vtx.color = color;
}
{
auto vtx = _quad_vb->at(1);
vec3_set(vtx.position, x + w, y, 0.);
*vtx.color = color;
}
{
auto vtx = _quad_vb->at(2);
vec3_set(vtx.position, x, y + h, 0.);
*vtx.color = color;
}
{
auto vtx = _quad_vb->at(3);
vec3_set(vtx.position, x + w, y + h, 0.);
*vtx.color = color;
}
gs_load_indexbuffer(nullptr);
gs_load_vertexbuffer(_quad_vb->update(true));
while (gs_effect_loop(_effect->get_object(), "Color")) {
gs_draw(GS_TRISTRIP, 0, 4);
}
gs_load_vertexbuffer(nullptr);
}
}
void streamfx::gfx::util::draw_fullscreen_triangle()
{
if (!_fstri_vb) {
_fstri_vb = std::make_shared<streamfx::obs::gs::vertex_buffer>(uint32_t(3), uint8_t(1));
{
auto vtx = _fstri_vb->at(0);
vec3_set(vtx.position, 0, 0, 0);
vec4_set(vtx.uv[0], 0, 0, 0, 0);
}
{
auto vtx = _fstri_vb->at(1);
vec3_set(vtx.position, 2, 0, 0);
vec4_set(vtx.uv[0], 2, 0, 0, 0);
}
{
auto vtx = _fstri_vb->at(2);
vec3_set(vtx.position, 0, 2, 0);
vec4_set(vtx.uv[0], 0, 2, 0, 0);
}
_fstri_vb->update();
}
gs_load_indexbuffer(nullptr);
gs_load_vertexbuffer(_fstri_vb->update(false));
gs_draw(GS_TRIS, 0, 3); //_gs_fstri_vb->size());
gs_load_vertexbuffer(nullptr);
}
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