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Fill solid background in OpenGL renderer.

This commit is contained in:
John Preston 2021-05-22 19:48:33 +04:00
parent 3e79b67032
commit 047989abcf
2 changed files with 209 additions and 131 deletions
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338
Telegram/SourceFiles/calls/group/calls_group_large_video.cpp
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@ -23,12 +23,95 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include "core/application.h"
#include <QtGui/QWindow>
#include <QtGui/QOpenGLShader>
#include <QtGui/QOpenGLShaderProgram>
#include <QtGui/QOpenGLBuffer>
namespace Calls::Group {
namespace {
constexpr auto kShadowMaxAlpha = 80;
const char *FrameVertexShader() {
return R"(
#version 130
in vec2 position;
in vec2 texcoord;
uniform vec2 viewport;
out vec2 v_texcoord;
vec4 transform(vec2 pos) {
return vec4(vec2(-1, -1) + 2 * pos / viewport, 0., 1.);
}
void main() {
gl_Position = transform(position);
v_texcoord = texcoord;
}
)";
}
const char *FrameFragmentShader() {
return 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);
}
)";
}
const char *FillVertexShader() {
return R"(
#version 130
in vec2 position;
uniform vec2 viewport;
vec4 transform(vec2 pos) {
return vec4(vec2(-1, -1) + 2 * pos / viewport, 0., 1.);
}
void main() {
gl_Position = transform(position);
}
)";
}
const char *FillFragmentShader() {
return R"(
#version 130
uniform vec4 s_color;
out vec4 fragColor;
void main() {
fragColor = s_color;
}
)";
}
not_null<QOpenGLShader*> MakeShader(
not_null<QOpenGLShaderProgram*> program,
QOpenGLShader::ShaderType type,
const char *source) {
const auto result = new QOpenGLShader(type, program);
if (!result->compileSourceCode(source)) {
LOG(("Shader Compilation Failed: %1, error %2."
).arg(source
).arg(result->log()));
}
program->addShader(result);
return result;
}
void LinkProgram(
not_null<QOpenGLShaderProgram*> program,
const char *vertexSource,
const char *fragmentSource) {
MakeShader(program, QOpenGLShader::Vertex, vertexSource);
MakeShader(program, QOpenGLShader::Fragment, fragmentSource);
if (!program->link()) {
LOG(("Shader Link Failed: %1.").arg(program->log()));
}
}
} // namespace
struct LargeVideo::PinButton {
@ -55,6 +138,10 @@ public:
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f) override;
void deinit(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f) override;
void resize(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f,
@ -66,17 +153,14 @@ public:
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;
std::optional<QOpenGLBuffer> _frameBuffer;
std::optional<QOpenGLBuffer> _fillBuffer;
std::optional<QOpenGLShaderProgram> _frameProgram;
std::optional<QOpenGLShaderProgram> _fillProgram;
qint64 _key = 0;
QMetaObject::Connection _connection;
};
@ -98,15 +182,6 @@ 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);
@ -116,79 +191,32 @@ void LargeVideo::RendererGL::init(
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);
_frameBuffer.emplace();
_frameBuffer->setUsagePattern(QOpenGLBuffer::DynamicDraw);
_frameBuffer->create();
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);
_fillBuffer.emplace();
_fillBuffer->setUsagePattern(QOpenGLBuffer::DynamicDraw);
_fillBuffer->create();
{
int success;
char infoLog[512];
f->glGetShaderiv(_vertexShader, GL_COMPILE_STATUS, &success);
if (!success) {
f->glGetShaderInfoLog(_vertexShader, 512, NULL, infoLog);
}
int a = 0;
}
_frameProgram.emplace();
LinkProgram(&*_frameProgram, FrameVertexShader(), FrameFragmentShader());
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;
}
_fillProgram.emplace();
LinkProgram(&*_fillProgram, FillVertexShader(), FillFragmentShader());
}
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::deinit(
not_null<QOpenGLWidget*> widget,
not_null<QOpenGLFunctions*> f) {
if (_textures.front()) {
f->glDeleteTextures(_textures.size(), _textures.data());
ranges::fill(_textures, 0);
}
_frameBuffer = std::nullopt;
_fillBuffer = std::nullopt;
_frameProgram = std::nullopt;
_fillProgram = std::nullopt;
}
void LargeVideo::RendererGL::resize(
@ -202,23 +230,58 @@ void LargeVideo::RendererGL::resize(
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 size = _owner->widget()->size();
if (size.isEmpty()) {
return;
}
const auto bg = st::groupCallMembersBg->c;
const auto bgvector = QVector4D(
bg.redF(),
bg.greenF(),
bg.blueF(),
bg.alphaF());
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->glClearColor(bgvector[0], bgvector[1], bgvector[2], bgvector[3]);
f->glClear(GL_COLOR_BUFFER_BIT);
return;
}
f->glUseProgram(_shaderProgram);
const auto scaled = Media::View::FlipSizeByRotation(
image.size(),
rotation
).scaled(size, Qt::KeepAspectRatio);
const auto left = (size.width() - scaled.width()) / 2;
const auto top = (size.height() - scaled.height()) / 2;
const auto right = left + scaled.width();
const auto bottom = top + scaled.height();
auto texcoords = std::array<std::array<GLfloat, 2>, 4> { {
{ {0, 1}},
{ {1, 1} },
{ {1, 0} },
{ {0, 0} },
} };
if (rotation > 0) {
std::rotate(
texcoords.begin(),
texcoords.begin() + (rotation / 90),
texcoords.end());
}
const GLfloat vertices[] = {
float(left), float(top), texcoords[0][0], texcoords[0][1],
float(right), float(top), texcoords[1][0], texcoords[1][1],
float(right), float(bottom), texcoords[2][0], texcoords[2][1],
float(left), float(bottom), texcoords[3][0], texcoords[3][1],
};
f->glUseProgram(_frameProgram->programId());
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;
@ -237,51 +300,66 @@ void LargeVideo::RendererGL::paint(
}
_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.
} };
_frameBuffer->bind();
_frameBuffer->allocate(vertices, sizeof(vertices));
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);
_frameProgram->setUniformValue("viewport", QSizeF(size));
_frameProgram->setUniformValue("s_texture", GLint(0));
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);
GLint position = _frameProgram->attributeLocation("position");
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)));
GLint texcoord = _frameProgram->attributeLocation("texcoord");
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);
f->glDisableVertexAttribArray(position);
f->glDisableVertexAttribArray(texcoord);
constexpr auto kMaxTriangles = 8;
auto coordinates = std::array<GLfloat, 6 * kMaxTriangles>{ 0 };
auto triangles = 0;
const auto fill = [&](QRect rect) {
auto i = triangles * 6;
coordinates[i + 0] = coordinates[i + 10] = rect.x();
coordinates[i + 1] = coordinates[i + 11] = rect.y();
coordinates[i + 2] = rect.x() + rect.width();
coordinates[i + 3] = rect.y();
coordinates[i + 4] = coordinates[i + 6] = rect.x() + rect.width();
coordinates[i + 5] = coordinates[i + 7] = rect.y() + rect.height();
coordinates[i + 8] = rect.x();
coordinates[i + 9] = rect.y() + rect.height();
triangles += 2;
};
if (left > 0) {
fill({ 0, 0, left, size.height() });
}
if (right < size.width()) {
fill({ right, 0, size.width() - right, size.height() });
}
if (top > 0) {
fill({ 0, 0, size.width(), top });
}
if (bottom < size.height()) {
fill({ 0, bottom, size.width(), size.height() - bottom });
}
if (triangles > 0) {
_fillBuffer->bind();
_fillBuffer->allocate(coordinates.data(), triangles * 6 * sizeof(GLfloat));
f->glUseProgram(_fillProgram->programId());
_fillProgram->setUniformValue("viewport", QSizeF(size));
_fillProgram->setUniformValue("s_color", bgvector);
GLint position = _fillProgram->attributeLocation("position");
f->glVertexAttribPointer(position, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (void*)0);
f->glEnableVertexAttribArray(position);
f->glDrawArrays(GL_TRIANGLES, 0, triangles * 3);
}
}
LargeVideo::LargeVideo(

2
Telegram/lib_ui

@ -1 +1 @@
Subproject commit 5e38964fbfed38efdcf5c1628ca65d7e3469764a
Subproject commit 8d7ced5c74328db316e2d80883ec0b12ab8c062b