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| |
| #include "stream_video_node.h" |
| |
| #include <QtQuick/qsgtexture.h> |
| |
| namespace QtWebEngineCore { |
| |
| class StreamVideoMaterialShader : public QSGMaterialShader |
| { |
| public: |
| StreamVideoMaterialShader(TextureTarget target) : m_target(target) { } |
| virtual void updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) override; |
| |
| char const *const *attributeNames() const override { |
| static const char *names[] = { |
| "a_position", |
| "a_texCoord", |
| 0 |
| }; |
| return names; |
| } |
| |
| protected: |
| const char *vertexShader() const override { |
| // Keep in sync with cc::VertexShaderVideoTransform |
| static const char *shader = |
| "attribute highp vec4 a_position;\n" |
| "attribute mediump vec2 a_texCoord;\n" |
| "uniform highp mat4 matrix;\n" |
| "uniform highp mat4 texMatrix;\n" |
| "varying mediump vec2 v_texCoord;\n" |
| "void main() {\n" |
| " gl_Position = matrix * a_position;\n" |
| " v_texCoord = vec4(texMatrix * vec4(a_texCoord.x, 1.0 - a_texCoord.y, 0.0, 1.0)).xy;\n" |
| "}"; |
| return shader; |
| } |
| |
| const char *fragmentShader() const override { |
| // Keep in sync with cc::FragmentShaderRGBATexAlpha |
| static const char *shaderExternal = |
| "#extension GL_OES_EGL_image_external : require\n" |
| "varying mediump vec2 v_texCoord;\n" |
| "uniform samplerExternalOES s_texture;\n" |
| "uniform lowp float alpha;\n" |
| "void main() {\n" |
| " lowp vec4 texColor = texture2D(s_texture, v_texCoord);\n" |
| " gl_FragColor = texColor * alpha;\n" |
| "}"; |
| static const char *shader2DRect = |
| "#extension GL_ARB_texture_rectangle : require\n" |
| "varying mediump vec2 v_texCoord;\n" |
| "uniform sampler2DRect s_texture;\n" |
| "uniform lowp float alpha;\n" |
| "void main() {\n" |
| " lowp vec4 texColor = texture2DRect(s_texture, v_texCoord);\n" |
| " gl_FragColor = texColor * alpha;\n" |
| "}"; |
| if (m_target == ExternalTarget) |
| return shaderExternal; |
| else |
| return shader2DRect; |
| } |
| |
| virtual void initialize() override { |
| m_id_matrix = program()->uniformLocation("matrix"); |
| m_id_sTexture = program()->uniformLocation("s_texture"); |
| m_id_texMatrix = program()->uniformLocation("texMatrix"); |
| m_id_opacity = program()->uniformLocation("alpha"); |
| } |
| |
| int m_id_matrix; |
| int m_id_texMatrix; |
| int m_id_sTexture; |
| int m_id_opacity; |
| TextureTarget m_target; |
| }; |
| |
| void StreamVideoMaterialShader::updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial) |
| { |
| Q_UNUSED(oldMaterial); |
| |
| StreamVideoMaterial *mat = static_cast<StreamVideoMaterial *>(newMaterial); |
| program()->setUniformValue(m_id_sTexture, 0); |
| |
| mat->m_texture->bind(); |
| |
| if (state.isOpacityDirty()) |
| program()->setUniformValue(m_id_opacity, state.opacity()); |
| |
| if (state.isMatrixDirty()) |
| program()->setUniformValue(m_id_matrix, state.combinedMatrix()); |
| |
| program()->setUniformValue(m_id_texMatrix, mat->m_texMatrix); |
| } |
| |
| StreamVideoMaterial::StreamVideoMaterial(QSGTexture *texture, TextureTarget target) |
| : m_texture(texture) |
| , m_target(target) |
| { |
| } |
| |
| QSGMaterialShader *StreamVideoMaterial::createShader() const |
| { |
| return new StreamVideoMaterialShader(m_target); |
| } |
| |
| StreamVideoNode::StreamVideoNode(QSGTexture *texture, bool flip, TextureTarget target) |
| : m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4) |
| , m_flip(flip) |
| { |
| setGeometry(&m_geometry); |
| setFlag(QSGNode::OwnsMaterial); |
| m_material = new StreamVideoMaterial(texture, target); |
| setMaterial(m_material); |
| } |
| |
| void StreamVideoNode::setRect(const QRectF &rect) |
| { |
| if (m_flip) |
| QSGGeometry::updateTexturedRectGeometry(geometry(), rect, QRectF(0, 1, 1, -1)); |
| else |
| QSGGeometry::updateTexturedRectGeometry(geometry(), rect, QRectF(0, 0, 1, 1)); |
| } |
| |
| void StreamVideoNode::setTextureMatrix(const QMatrix4x4 &matrix) |
| { |
| m_material->m_texMatrix = matrix; |
| } |
| |
| } // namespace |