2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG.
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6 * CasparCG is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at your option) any later version.
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11 * CasparCG is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
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20 #include "../../stdafx.h"
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22 #include "image_kernel.h"
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24 #include "image_shader.h"
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26 #include "blending_glsl.h"
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27 #include "../gpu/shader.h"
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28 #include "../gpu/device_buffer.h"
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29 #include "../gpu/ogl_device.h"
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31 #include <common/exception/exceptions.h>
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32 #include <common/gl/gl_check.h>
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33 #include <common/env.h>
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35 #include <core/video_format.h>
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36 #include <core/producer/frame/pixel_format.h>
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37 #include <core/producer/frame/frame_transform.h>
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39 #include <GL/glew.h>
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41 #include <boost/noncopyable.hpp>
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43 #include <unordered_map>
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45 namespace caspar { namespace core {
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47 GLubyte upper_pattern[] = {
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48 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
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49 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
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50 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
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51 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00};
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53 GLubyte lower_pattern[] = {
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54 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
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55 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
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56 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
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57 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff};
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59 struct image_kernel::implementation : boost::noncopyable
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61 std::shared_ptr<shader> shader_;
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64 void draw(ogl_device& ogl,
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66 device_buffer& background,
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67 const std::shared_ptr<device_buffer>& local_key,
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68 const std::shared_ptr<device_buffer>& layer_key)
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70 static const double epsilon = 0.001;
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72 CASPAR_ASSERT(item.pix_desc.planes.size() == item.textures.size());
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74 if(item.textures.empty())
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77 if(item.transform.opacity < epsilon)
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80 if(!std::all_of(item.textures.begin(), item.textures.end(), std::mem_fn(&device_buffer::ready)))
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82 CASPAR_LOG(warning) << L"[image_mixer] Performance warning. Host to device transfer not complete, GPU will be stalled";
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83 ogl.yield(); // Try to give it some more time.
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88 for(size_t n = 0; n < item.textures.size(); ++n)
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89 item.textures[n]->bind(n);
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92 local_key->bind(texture_id::local_key);
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95 layer_key->bind(texture_id::layer_key);
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100 shader_ = get_image_shader(ogl, blend_modes_);
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104 shader_->set("plane[0]", texture_id::plane0);
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105 shader_->set("plane[1]", texture_id::plane1);
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106 shader_->set("plane[2]", texture_id::plane2);
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107 shader_->set("plane[3]", texture_id::plane3);
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108 shader_->set("local_key", texture_id::local_key);
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109 shader_->set("layer_key", texture_id::layer_key);
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110 shader_->set("is_hd", item.pix_desc.planes.at(0).height > 700 ? 1 : 0);
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111 shader_->set("has_local_key", local_key);
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112 shader_->set("has_layer_key", layer_key);
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113 shader_->set("pixel_format", item.pix_desc.pix_fmt);
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114 shader_->set("opacity", item.transform.is_key ? 1.0 : item.transform.opacity);
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116 // Setup blend_func
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118 if(item.transform.is_key)
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119 item.blend_mode = blend_mode::normal;
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123 background.bind(6);
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125 shader_->set("background", texture_id::background);
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126 shader_->set("blend_mode", item.blend_mode);
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130 ogl.blend_func_separate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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133 // Setup image-adjustements
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135 if(item.transform.levels.min_input > epsilon ||
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136 item.transform.levels.max_input < 1.0-epsilon ||
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137 item.transform.levels.min_output > epsilon ||
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138 item.transform.levels.max_output < 1.0-epsilon ||
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139 std::abs(item.transform.levels.gamma - 1.0) > epsilon)
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141 shader_->set("levels", true);
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142 shader_->set("min_input", item.transform.levels.min_input);
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143 shader_->set("max_input", item.transform.levels.max_input);
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144 shader_->set("min_output", item.transform.levels.min_output);
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145 shader_->set("max_output", item.transform.levels.max_output);
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146 shader_->set("gamma", item.transform.levels.gamma);
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149 shader_->set("levels", false);
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151 if(std::abs(item.transform.brightness - 1.0) > epsilon ||
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152 std::abs(item.transform.saturation - 1.0) > epsilon ||
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153 std::abs(item.transform.contrast - 1.0) > epsilon)
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155 shader_->set("csb", true);
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157 shader_->set("brt", item.transform.brightness);
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158 shader_->set("sat", item.transform.saturation);
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159 shader_->set("con", item.transform.contrast);
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162 shader_->set("csb", false);
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164 // Setup interlacing
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166 if(item.transform.field_mode == core::field_mode::progressive)
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167 ogl.disable(GL_POLYGON_STIPPLE);
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170 ogl.enable(GL_POLYGON_STIPPLE);
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172 if(item.transform.field_mode == core::field_mode::upper)
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173 ogl.stipple_pattern(upper_pattern);
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174 else if(item.transform.field_mode == core::field_mode::lower)
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175 ogl.stipple_pattern(lower_pattern);
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178 // Setup drawing area
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180 ogl.viewport(0, 0, background.width(), background.height());
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182 auto m_p = item.transform.clip_translation;
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183 auto m_s = item.transform.clip_scale;
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185 bool scissor = m_p[0] > std::numeric_limits<double>::epsilon() || m_p[1] > std::numeric_limits<double>::epsilon() ||
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186 m_s[0] < (1.0 - std::numeric_limits<double>::epsilon()) || m_s[1] < (1.0 - std::numeric_limits<double>::epsilon());
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190 double w = static_cast<double>(background.width());
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191 double h = static_cast<double>(background.height());
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193 ogl.enable(GL_SCISSOR_TEST);
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194 ogl.scissor(static_cast<size_t>(m_p[0]*w), static_cast<size_t>(m_p[1]*h), static_cast<size_t>(m_s[0]*w), static_cast<size_t>(m_s[1]*h));
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197 auto f_p = item.transform.fill_translation;
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198 auto f_s = item.transform.fill_scale;
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200 // Set render target
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202 ogl.attach(background);
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207 glMultiTexCoord2d(GL_TEXTURE0, 0.0, 0.0); glMultiTexCoord2d(GL_TEXTURE1, f_p[0] , f_p[1] ); glVertex2d( f_p[0] *2.0-1.0, f_p[1] *2.0-1.0);
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208 glMultiTexCoord2d(GL_TEXTURE0, 1.0, 0.0); glMultiTexCoord2d(GL_TEXTURE1, (f_p[0]+f_s[0]), f_p[1] ); glVertex2d((f_p[0]+f_s[0])*2.0-1.0, f_p[1] *2.0-1.0);
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209 glMultiTexCoord2d(GL_TEXTURE0, 1.0, 1.0); glMultiTexCoord2d(GL_TEXTURE1, (f_p[0]+f_s[0]), (f_p[1]+f_s[1])); glVertex2d((f_p[0]+f_s[0])*2.0-1.0, (f_p[1]+f_s[1])*2.0-1.0);
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210 glMultiTexCoord2d(GL_TEXTURE0, 0.0, 1.0); glMultiTexCoord2d(GL_TEXTURE1, f_p[0] , (f_p[1]+f_s[1])); glVertex2d( f_p[0] *2.0-1.0, (f_p[1]+f_s[1])*2.0-1.0);
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215 ogl.disable(GL_SCISSOR_TEST);
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217 item.textures.clear();
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218 ogl.yield(); // Return resources to pool as early as possible.
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222 // http://www.opengl.org/registry/specs/NV/texture_barrier.txt
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223 // This allows us to use framebuffer (background) both as source and target while blending.
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224 glTextureBarrierNV();
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229 image_kernel::image_kernel() : impl_(new implementation()){}
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230 void image_kernel::draw(ogl_device& ogl,
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231 render_item&& item,
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232 device_buffer& background,
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233 const std::shared_ptr<device_buffer>& local_key,
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234 const std::shared_ptr<device_buffer>& layer_key)
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236 impl_->draw(ogl, std::move(item), background, local_key, layer_key);
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239 bool operator==(const render_item& lhs, const render_item& rhs)
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241 return lhs.textures == rhs.textures && lhs.transform == rhs.transform;
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