/*
* CINELERRA
* Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
- *
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ *
*/
#include "dissolve.h"
int DissolveMain::process_realtime(VFrame *incoming, VFrame *outgoing)
{
- fade = (float)PluginClient::get_source_position() /
+ fade = (float)PluginClient::get_source_position() /
PluginClient::get_total_len();
// Use hardware
// Use software
if(!overlayer) overlayer = new OverlayFrame(get_project_smp() + 1);
-
-// There is a problem when dissolving from a big picture to a small picture.
-// In order to make it dissolve correctly, we have to manually decrese alpha of big picture.
- switch (outgoing->get_color_model())
- {
- case BC_RGBA8888:
- case BC_YUVA8888:
- {
- uint8_t** data_rows = (uint8_t **)outgoing->get_rows();
- int w = outgoing->get_w();
- int h = outgoing->get_h();
- for(int i = 0; i < h; i++)
- {
- uint8_t* alpha_chan = data_rows[i] + 3;
- for(int j = 0; j < w; j++)
- {
- *alpha_chan = (uint8_t) (*alpha_chan * (1-fade));
- alpha_chan+=4;
- }
- }
- break;
- }
- case BC_YUVA16161616:
- {
- uint16_t** data_rows = (uint16_t **)outgoing->get_rows();
- int w = outgoing->get_w();
- int h = outgoing->get_h();
- for(int i = 0; i < h; i++)
- {
- uint16_t* alpha_chan = data_rows[i] + 3; // 3 since this is uint16_t
- for(int j = 0; j < w; j++)
- {
- *alpha_chan = (uint16_t)(*alpha_chan * (1-fade));
- alpha_chan += 8;
- }
- }
- break;
- }
- case BC_RGBA_FLOAT:
- {
- float** data_rows = (float **)outgoing->get_rows();
- int w = outgoing->get_w();
- int h = outgoing->get_h();
- for(int i = 0; i < h; i++)
- {
- float* alpha_chan = data_rows[i] + 3; // 3 since this is floats
- for(int j = 0; j < w; j++)
- {
- *alpha_chan = *alpha_chan * (1-fade);
- alpha_chan += sizeof(float);
- }
- }
- break;
- }
- default:
- break;
- }
-
-
- overlayer->overlay(outgoing,
- incoming,
- 0,
- 0,
- incoming->get_w(),
- incoming->get_h(),
- 0,
- 0,
- incoming->get_w(),
- incoming->get_h(),
- fade,
- TRANSFER_NORMAL,
- NEAREST_NEIGHBOR);
+ overlayer->overlay(outgoing, incoming,
+ 0, 0, incoming->get_w(), incoming->get_h(),
+ 0, 0, incoming->get_w(), incoming->get_h(),
+ fade, TRANSFER_SRC, NEAREST_NEIGHBOR);
return 0;
}
int DissolveMain::handle_opengl()
{
#ifdef HAVE_GL
+ static const char *blend_dissolve =
+ "uniform float fade;\n"
+ "uniform sampler2D src_tex;\n"
+ "uniform sampler2D dst_tex;\n"
+ "uniform vec2 dst_tex_dimensions;\n"
+ "uniform vec3 chroma_offset;\n"
+ "void main()\n"
+ "{\n"
+ " vec4 result_color;\n"
+ " vec4 dst_color = texture2D(dst_tex, gl_FragCoord.xy / dst_tex_dimensions);\n"
+ " vec4 src_color = texture2D(src_tex, gl_TexCoord[0].st);\n"
+ " src_color.rgb -= chroma_offset;\n"
+ " dst_color.rgb -= chroma_offset;\n"
+ " result_color = mix(dst_color, src_color, fade);\n"
+ " result_color.rgb += chroma_offset;\n"
+ " gl_FragColor = result_color;\n"
+ "}\n";
// Read images from RAM
- get_input()->to_texture();
- get_output()->to_texture();
+ VFrame *src = get_input();
+ src->to_texture();
+ VFrame *dst = get_output();
+ dst->to_texture();
+ dst->enable_opengl();
+ dst->init_screen();
+ src->bind_texture(0);
+ dst->bind_texture(1);
+
+ const char *shader_stack[] = { 0, 0, 0 };
+ int current_shader = 0;
+ shader_stack[current_shader++] = blend_dissolve;
+
+ unsigned int shader_id = VFrame::make_shader(0,
+ shader_stack[0], shader_stack[1], shader_stack[2], 0);
+
+ glUseProgram(shader_id);
+ glUniform1f(glGetUniformLocation(shader_id, "fade"), fade);
+ glUniform1i(glGetUniformLocation(shader_id, "src_tex"), 0);
+ glUniform1i(glGetUniformLocation(shader_id, "dst_tex"), 1);
+ if(BC_CModels::is_yuv(dst->get_color_model()))
+ glUniform3f(glGetUniformLocation(shader_id, "chroma_offset"), 0.0, 0.5, 0.5);
+ else
+ glUniform3f(glGetUniformLocation(shader_id, "chroma_offset"), 0.0, 0.0, 0.0);
+ glUniform2f(glGetUniformLocation(shader_id, "dst_tex_dimensions"),
+ (float)dst->get_texture_w(),
+ (float)dst->get_texture_h());
-// Create output pbuffer
- get_output()->enable_opengl();
-
- VFrame::init_screen(get_output()->get_w(), get_output()->get_h());
-
-// Enable output texture
- get_output()->bind_texture(0);
-// Draw output texture
glDisable(GL_BLEND);
- glColor4f(1, 1, 1, 1);
- get_output()->draw_texture();
-
-// Draw input texture
- get_input()->bind_texture(0);
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glColor4f(1, 1, 1, fade);
- get_input()->draw_texture();
-
+ src->draw_texture();
+ glUseProgram(0);
glDisable(GL_BLEND);
- get_output()->set_opengl_state(VFrame::SCREEN);
-
+ glActiveTexture(GL_TEXTURE1);
+ glDisable(GL_TEXTURE_2D);
+ glActiveTexture(GL_TEXTURE0);
+ glDisable(GL_TEXTURE_2D);
+ dst->set_opengl_state(VFrame::SCREEN);
#endif
return 0;
}
projects / goodguy / history.git / blobdiff