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Start OpenGL renderer for group calls.

This commit is contained in:
John Preston 2021-05-21 22:56:12 +04:00
parent ca4b1e6ae0
commit 3e79b67032
2 changed files with 238 additions and 2 deletions
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239
Telegram/SourceFiles/calls/group/calls_group_large_video.cpp
View File

@ -20,6 +20,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include "lang/lang_keys.h"
#include "styles/style_calls.h"
#include "core/application.h"
#include <QtGui/QWindow>
namespace Calls::Group {
@ -43,6 +45,41 @@ struct LargeVideo::PinButton {
bool shown = false;
};
class LargeVideo::RendererGL : public Ui::GL::Renderer {
public:
explicit RendererGL(not_null<LargeVideo*> owner) : _owner(owner) {
}
~RendererGL();
void init(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f) override;
void resize(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f,
int w,
int h) override;
void paint(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f) override;
private:
void deinit(not_null<QOpenGLContext*> context);
const not_null<LargeVideo*> _owner;
std::array<GLuint, 3> _textures = {};
GLuint _vertexBuffer = 0;
GLuint _vertexShader = 0;
GLuint _fragmentShader = 0;
GLuint _shaderProgram = 0;
qint64 _key = 0;
QMetaObject::Connection _connection;
};
LargeVideo::PinButton::PinButton(
not_null<QWidget*> parent,
const style::GroupCallLargeVideo &st)
@ -55,6 +92,198 @@ LargeVideo::PinButton::PinButton(
st::radialBg) {
}
LargeVideo::RendererGL::~RendererGL() {
}
void LargeVideo::RendererGL::init(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f) {
if (_connection) {
QObject::disconnect(_connection);
}
const auto context = widget->context();
_connection = QObject::connect(
context,
&QOpenGLContext::aboutToBeDestroyed,
[=] { deinit(context); });
f->glGenTextures(3, _textures.data());
for (const auto texture : _textures) {
f->glBindTexture(GL_TEXTURE_2D, texture);
const auto clamp = GL_CLAMP_TO_EDGE;
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, clamp);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, clamp);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
f->glGenBuffers(1, &_vertexBuffer);
const char *vertexShaderSource = R"(
#version 130
in vec2 position;
in vec2 texcoord;
out vec2 v_texcoord;
void main() {
gl_Position = vec4(position.x, position.y, 0.0, 1.0);
v_texcoord = texcoord;
}
)";
_vertexShader = f->glCreateShader(GL_VERTEX_SHADER);
f->glShaderSource(_vertexShader, 1, &vertexShaderSource, NULL);
f->glCompileShader(_vertexShader);
{
int success;
char infoLog[512];
f->glGetShaderiv(_vertexShader, GL_COMPILE_STATUS, &success);
if (!success) {
f->glGetShaderInfoLog(_vertexShader, 512, NULL, infoLog);
}
int a = 0;
}
const char *fragmentShaderSource = R"(
#version 130
in vec2 v_texcoord;
uniform sampler2D s_texture;
out vec4 fragColor;
void main() {
vec4 color = texture(s_texture, v_texcoord);
fragColor = vec4(color.b, color.g, color.r, color.a);
}
)";
// ;
_fragmentShader = f->glCreateShader(GL_FRAGMENT_SHADER);
f->glShaderSource(_fragmentShader, 1, &fragmentShaderSource, NULL);
f->glCompileShader(_fragmentShader);
{
int success;
char infoLog[512];
f->glGetShaderiv(_fragmentShader, GL_COMPILE_STATUS, &success);
if (!success) {
f->glGetShaderInfoLog(_fragmentShader, 512, NULL, infoLog);
}
int a = 0;
}
_shaderProgram = f->glCreateProgram();
f->glAttachShader(_shaderProgram, _vertexShader);
f->glAttachShader(_shaderProgram, _fragmentShader);
f->glLinkProgram(_shaderProgram);
{
int success;
char infoLog[512];
f->glGetProgramiv(_shaderProgram, GL_LINK_STATUS, &success);
if (!success) {
f->glGetProgramInfoLog(_shaderProgram, 512, NULL, infoLog);
}
int a = 0;
}
}
void LargeVideo::RendererGL::deinit(not_null<QOpenGLContext*> context) {
context->functions()->glDeleteTextures(_textures.size(), _textures.data());
context->functions()->glDeleteBuffers(1, &_vertexBuffer);
context->functions()->glDeleteProgram(_shaderProgram);
context->functions()->glDeleteShader(_vertexShader);
context->functions()->glDeleteShader(_fragmentShader);
}
void LargeVideo::RendererGL::resize(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f,
int w,
int h) {
f->glViewport(0, 0, w, h);
}
void LargeVideo::RendererGL::paint(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f) {
const auto bg = st::groupCallMembersFg->c;
const auto fill = [&](QRect rect) {
//p.fillRect(rect, st::groupCallMembersBg);
};
const auto [image, rotation] = _owner->_track
? _owner->_track.track->frameOriginalWithRotation()
: std::pair<QImage, int>();
if (image.isNull()) {
f->glClearColor(bg.redF(), bg.greenF(), bg.blueF(), 1.);
f->glClear(GL_COLOR_BUFFER_BIT);
return;
}
f->glUseProgram(_shaderProgram);
f->glActiveTexture(GL_TEXTURE0);
f->glBindTexture(GL_TEXTURE_2D, _textures[0]);
// #TODO calls check stride, upload with stride or from copy of an image.
const auto key = image.cacheKey();
if (_key != key) {
_key = key;
f->glPixelStorei(GL_UNPACK_ROW_LENGTH, image.bytesPerLine() / 4);
f->glTexImage2D(
GL_TEXTURE_2D,
0,
GL_RGB,
image.width(),
image.height(),
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
image.constBits());
f->glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
}
_owner->_track.track->markFrameShown();
f->glBindBuffer(GL_ARRAY_BUFFER, _vertexBuffer);
std::array<std::array<GLfloat, 2>, 4> UVCoords = { {
{{0, 1}}, // Lower left.
{{1, 1}}, // Lower right.
{{1, 0}}, // Upper right.
{{0, 0}}, // Upper left.
} };
const auto rotation_offset = (rotation / 90);
std::rotate(
UVCoords.begin(),
UVCoords.begin() + rotation_offset,
UVCoords.end());
const GLfloat vertices[] = {
-1, -1, UVCoords[0][0], UVCoords[0][1],
1, -1, UVCoords[1][0], UVCoords[1][1],
1, 1, UVCoords[2][0], UVCoords[2][1],
-1, 1, UVCoords[3][0], UVCoords[3][1],
};
f->glBufferData(
GL_ARRAY_BUFFER,
sizeof(vertices),
vertices,
GL_DYNAMIC_DRAW);
GLint sampler = f->glGetUniformLocation(_shaderProgram, "s_texture");
GLint position = f->glGetAttribLocation(_shaderProgram, "position");
GLint texcoord = f->glGetAttribLocation(_shaderProgram, "texcoord");
if (position < 0 || texcoord < 0) {
return;
}
f->glUniform1i(sampler, 0);
// Read position attribute with size of 2 and stride of 4 beginning at the start of the array. The
// last argument indicates offset of data within the vertex buffer.
f->glVertexAttribPointer(position, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (void *)0);
f->glEnableVertexAttribArray(position);
// Read texcoord attribute with size of 2 and stride of 4 beginning at the first texcoord in the
// array. The last argument indicates offset of data within the vertex buffer.
f->glVertexAttribPointer(texcoord, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (void *)(2 * sizeof(GLfloat)));
f->glEnableVertexAttribArray(texcoord);
f->glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
LargeVideo::LargeVideo(
QWidget *parent,
const style::GroupCallLargeVideo &st,
@ -84,7 +313,7 @@ Ui::GL::ChosenRenderer LargeVideo::chooseRenderer(
Ui::GL::Capabilities capabilities) {
class Renderer : public Ui::GL::Renderer {
public:
Renderer(not_null<LargeVideo*> owner) : _owner(owner) {
explicit Renderer(not_null<LargeVideo*> owner) : _owner(owner) {
}
void paintFallback(
@ -108,9 +337,15 @@ Ui::GL::ChosenRenderer LargeVideo::chooseRenderer(
? capabilities.supported
: capabilities.transparency;
LOG(("OpenGL: %1 (LargeVideo)").arg(Logs::b(use)));
if (use) {
return {
.renderer = std::make_unique<RendererGL>(this),
.backend = Ui::GL::Backend::OpenGL,
};
}
return {
.renderer = std::make_unique<Renderer>(this),
.backend = (use ? Ui::GL::Backend::OpenGL : Ui::GL::Backend::Raster),
.backend = Ui::GL::Backend::Raster,
};
}

1
Telegram/SourceFiles/calls/group/calls_group_large_video.h
View File

@ -80,6 +80,7 @@ public:
private:
struct PinButton;
class RendererGL;
[[nodiscard]] not_null<QWidget*> widget() const;