+++ /dev/null
-
-/*
- * 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
- *
- */
-
-#define GL_GLEXT_PROTOTYPES
-
-#include "bcsynchronous.h"
-#include "bctexture.h"
-#include "bcwindowbase.h"
-#include "bccmodels.h"
-
-
-BC_Texture::BC_Texture(int w, int h, int colormodel)
-{
- this->w = w;
- this->h = h;
- this->colormodel = colormodel;
- texture_id = -1;
- texture_id = -1;
- texture_w = 0;
- texture_h = 0;
- texture_components = 0;
- window_id = -1;
- create_texture(w, h, colormodel);
-}
-
-
-BC_Texture::~BC_Texture()
-{
- clear_objects();
-}
-
-void BC_Texture::clear_objects()
-{
- if(get_texture_id() >= 0)
- {
-// printf("VFrame::clear_objects %p window_id=%d texture_id=%d w=%d h=%d\n",
-// this, window_id, texture_id, texture_w, texture_h);
- BC_WindowBase::get_synchronous()->release_texture(
- window_id,
- texture_id);
- texture_id = -1;
- }
-}
-
-void BC_Texture::new_texture(BC_Texture **texture,
- int w, int h, int colormodel)
-{
- if(!(*texture)) {
- (*texture) = new BC_Texture(w, h, colormodel);
- }
- else {
- (*texture)->create_texture(w, h, colormodel);
- }
-}
-
-void BC_Texture::create_texture(int w, int h, int colormodel)
-{
-#ifdef HAVE_GL
-
-// Get max texture size from the server.
-// Maximum size was 4096 on the earliest cards that could do video.
- int max_texture_size = 0;
- glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
-
-// Calculate dimensions of texture
- int new_w = calculate_texture_size(w, &max_texture_size);
- int new_h = calculate_texture_size(h, &max_texture_size);
- int new_components = BC_CModels::components(colormodel);
-
- if(new_w < w || new_h < h) {
- printf("BC_Texture::create_texture frame size %dx%d bigger than maximum texture %dx%d.\n",
- w, h, max_texture_size, max_texture_size);
- }
-
-// Delete existing texture
- if(texture_id >= 0 && (new_h != texture_h || new_w != texture_w ||
- new_components != texture_components ||
- BC_WindowBase::get_synchronous()->current_window->get_id() != window_id))
- {
-// printf("BC_Texture::create_texture released window_id=%d texture_id=%d\n",
-// BC_WindowBase::get_synchronous()->current_window->get_id(),
-// texture_id);
- BC_WindowBase::get_synchronous()->release_texture(
- window_id,
- texture_id);
- texture_id = -1;
- window_id = -1;
- }
-
-
- texture_w = new_w;
- texture_h = new_h;
- texture_components = new_components;
-
-// Get matching texture
- if(texture_id < 0) {
- texture_id = BC_WindowBase::get_synchronous()->get_texture(
- texture_w, texture_h, texture_components);
-// A new VFrame has no window_id, so it must read it from the matching texture.
- if(texture_id >= 0)
- window_id = BC_WindowBase::get_synchronous()->current_window->get_id();
- }
-
-// No matching texture exists.
-// Create new texture with the proper dimensions
- if(texture_id < 0) {
- glGenTextures(1, (GLuint*)&texture_id);
- glBindTexture(GL_TEXTURE_2D, (GLuint)texture_id);
- glEnable(GL_TEXTURE_2D);
- if(texture_components == 4)
- glTexImage2D(GL_TEXTURE_2D, 0, 4, texture_w, texture_h,
- 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
- else
- glTexImage2D(GL_TEXTURE_2D, 0, 3, texture_w, texture_h,
- 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
-
- window_id = BC_WindowBase::get_synchronous()->current_window->get_id();
- BC_WindowBase::get_synchronous()->put_texture(texture_id,
- texture_w, texture_h, texture_components);
-//printf("BC_Texture::new_texture created texture_id=%d window_id=%d w=%d h=%d\n",
-// texture_id, window_id, texture_w, texture_h);
- }
- else {
- glBindTexture(GL_TEXTURE_2D, (GLuint)texture_id);
- glEnable(GL_TEXTURE_2D);
- }
-#endif
-}
-
-int BC_Texture::calculate_texture_size(int w, int *max)
-{
- int i;
- for(i = 2; (max && i <= *max) || (!max && i < w); i *= 2)
- {
- if(i >= w)
- {
- return i;
- break;
- }
- }
- if(max && i > *max) return 16;
- return i;
-}
-
-int BC_Texture::get_texture_id()
-{
- return texture_id;
-}
-
-int BC_Texture::get_texture_w()
-{
- return texture_w;
-}
-
-int BC_Texture::get_texture_h()
-{
- return texture_h;
-}
-
-int BC_Texture::get_texture_components()
-{
- return texture_components;
-}
-
-int BC_Texture::get_window_id()
-{
- return window_id;
-}
-
-
-void BC_Texture::bind(int texture_unit)
-{
-#ifdef HAVE_GL
-// Bind the texture
- if(texture_id >= 0)
- {
- if(texture_unit >= 0) glActiveTexture(GL_TEXTURE0 + texture_unit);
- glBindTexture(GL_TEXTURE_2D, texture_id);
- glEnable(GL_TEXTURE_2D);
- if(texture_unit >= 0)
- {
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-
-// GL_REPEAT in this case causes the upper left corners of the masks
-// to blur.
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
-
-// Get the texture to alpha blend
- glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
- }
- }
-#endif
-}
-
projects / goodguy / history.git / blobdiff