void App::render_gaussian_blur(clan::Canvas &canvas, float blur_amount, clan::Texture2D &source_texture, clan::ProgramObject &program_object, float dx, float dy) { uniforms.sample[0].weight = compute_gaussian(0, blur_amount); uniforms.sample[0].offset_x = 0.0f; uniforms.sample[0].offset_y = 0.0f; float totalWeights = uniforms.sample[0].weight; for (int i = 0; i < sampleCount / 2; i++) { float weight = compute_gaussian(i + 1.0f, blur_amount); uniforms.sample[i * 2 + 1].weight = weight; uniforms.sample[i * 2 + 2].weight = weight; totalWeights += weight * 2; float sampleOffset = i * 2 + 1.5f; clan::Vec2f delta(dx * sampleOffset, dy * sampleOffset); uniforms.sample[i * 2 + 1].offset_x = delta.x; uniforms.sample[i * 2 + 1].offset_y = delta.y; uniforms.sample[i * 2 + 2].offset_x = -delta.x; uniforms.sample[i * 2 + 2].offset_y = -delta.y; } for (int i = 0; i < sampleCount; i++) { uniforms.sample[i].weight /= totalWeights; } canvas.flush(); clan::GraphicContext gc = canvas.get_gc(); gc.set_texture(0, source_texture); gc.set_program_object(program_object); uniforms.cl_ModelViewProjectionMatrix = canvas.get_projection() * canvas.get_transform(); gpu_uniforms.upload_data(gc, &uniforms, 1); gc.set_uniform_buffer(0, gpu_uniforms); draw_texture(gc, clan::Rectf(0,0,canvas.get_width(),canvas.get_height()), clan::Rectf(0.0f, 0.0f, 1.0f, 1.0f)); gc.reset_program_object(); gc.reset_texture(0); }
void App::render_shockwave(clan::Canvas &canvas, clan::Texture2D &source_texture, clan::ProgramObject &program_object) { canvas.flush(); clan::GraphicContext gc = canvas.get_gc(); gc.set_texture(0, source_texture); gc.set_program_object(program_object); uniforms.cl_ModelViewProjectionMatrix = canvas.get_projection() * canvas.get_transform(); gpu_uniforms.upload_data(gc, &uniforms, 1); gc.set_uniform_buffer(0, gpu_uniforms); draw_texture(gc, clan::Rectf(0,0,canvas.get_width(),canvas.get_height()), clan::Rectf(0.0f, 0.0f, 1.0f, 1.0f)); gc.reset_program_object(); gc.reset_texture(0); }
SvgTransformScope::SvgTransformScope(clan::Canvas &canvas, clan::DomElement &e) : canvas(canvas) { try { clan::Mat4d mat = clan::Mat4d::identity(); SvgAttributeReader transform(e, "transform"); while (!transform.is_end()) { clan::Mat4d t; if (transform.is_keyword("matrix")) { transform.get_keyword("matrix"); transform.get_operator("("); t = clan::Mat4d::identity(); t.matrix[0] = transform.get_number(); t.matrix[1] = transform.get_number(); t.matrix[4] = transform.get_number(); t.matrix[5] = transform.get_number(); t.matrix[12] = transform.get_number(); t.matrix[13] = transform.get_number(); transform.get_operator(")"); } else if (transform.is_keyword("translate")) { transform.get_keyword("translate"); transform.get_operator("("); double tx = transform.get_number(); double ty = transform.is_number() ? transform.get_number() : 0.0; transform.get_operator(")"); t = clan::Mat4d::translate(tx, ty, 0.0); } else if (transform.is_keyword("scale")) { transform.get_keyword("scale"); transform.get_operator("("); double sx = transform.get_number(); double sy = transform.is_number() ? transform.get_number() : sx; transform.get_operator(")"); t = clan::Mat4d::scale(sx, sy, 0.0); } else if (transform.is_keyword("rotate")) { transform.get_keyword("rotate"); transform.get_operator("("); double a = transform.get_number() * clan::PI / 180.0; t = clan::Mat4d::identity(); t.matrix[0] = std::cos(a); t.matrix[1] = std::sin(a); t.matrix[4] = -t.matrix[1]; t.matrix[5] = -t.matrix[0]; if (transform.is_number()) { double tx = transform.get_number(); double ty = transform.is_number() ? transform.get_number() : 0.0; t = clan::Mat4d::translate(tx, ty, 0.0) * t * clan::Mat4d::translate(-tx, -ty, 0.0); } transform.get_operator(")"); } else if (transform.is_keyword("skewX")) { transform.get_keyword("skewX"); transform.get_operator("("); double a = transform.get_number() * clan::PI / 180.0; transform.get_operator(")"); t = clan::Mat4d::identity(); t.matrix[4] = std::tan(a); } else if (transform.is_keyword("skewY")) { transform.get_keyword("skewY"); transform.get_operator("("); double a = transform.get_number() * clan::PI / 180.0; transform.get_operator(")"); t = clan::Mat4d::identity(); t.matrix[1] = std::tan(a); } else { transform.parse_error("expected transform keyword"); } mat = mat * t; if (transform.is_operator(",")) transform.get_operator(","); } old_transform = canvas.get_transform(); canvas.mult_transform(clan::Mat4f(mat)); transform_active = true; } catch (clan::Exception &) { } }
SvgTransformScope::SvgTransformScope(clan::Canvas &canvas, const clan::Mat4f &transform, bool transform_active) : canvas(canvas), transform_active(transform_active) { old_transform = canvas.get_transform(); canvas.mult_transform(transform); }
SvgTransformScope::SvgTransformScope(clan::Canvas &canvas, clan::DomElement &e) : canvas(canvas) { old_transform = canvas.get_transform(); canvas.mult_transform(parse_transform(e, transform_active)); }
void App::render_bloom_combine(clan::Canvas &canvas, clan::Texture2D &tex_base, clan::Texture2D &tex_bloom, clan::ProgramObject &program_object) { canvas.flush(); clan::GraphicContext gc = canvas.get_gc(); gc.set_texture(0, tex_base); gc.set_texture(1, tex_bloom); gc.set_program_object(program_object); program_object.set_uniform1i(("BaseTexture"), 0); program_object.set_uniform1f(("BaseIntensity"), base_intensity); program_object.set_uniform1f(("BaseSaturation"), base_saturation); program_object.set_uniform1i(("BloomTexture"), 1); program_object.set_uniform1f(("BloomIntensity"), bloom_intensity); program_object.set_uniform1f(("BloomSaturation"), bloom_saturation); program_object.set_uniform_matrix("cl_ModelViewProjectionMatrix", canvas.get_projection() * canvas.get_transform()); draw_texture(gc, clan::Rectf(0,0,canvas.get_width(),canvas.get_height()), clan::Rectf(0.0f, 0.0f, 1.0f, 1.0f)); gc.reset_program_object(); gc.reset_texture(0); gc.reset_texture(1); }
void App::render_extract_highlights(clan::Canvas &canvas, clan::Texture2D &source_texture, clan::ProgramObject &program_object) { canvas.flush(); clan::GraphicContext gc = canvas.get_gc(); gc.set_texture(0, source_texture); gc.set_program_object(program_object); program_object.set_uniform1i(("SourceTexture"), 0); program_object.set_uniform1f(("Threshold"), highlight_threshold); program_object.set_uniform_matrix("cl_ModelViewProjectionMatrix", canvas.get_projection() * canvas.get_transform()); draw_texture(gc, clan::Rectf(0,0,canvas.get_width(),canvas.get_height()), clan::Rectf(0.0f, 0.0f, 1.0f, 1.0f)); gc.reset_program_object(); gc.reset_texture(0); }