int init_buffers(void)
{
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glGenBuffers(2, vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[1]);
shader_program_bind(&program);
// получаем аттрибут для вершин
attr_position = shader_program_get_attrib_loc(&program, "position");
if(attr_position != -1) {
glVertexAttribPointer(attr_position, 3, GL_FLOAT, GL_FALSE, sizeof(vector3f), (const GLvoid*) 0);
glEnableVertexAttribArray(attr_position);
}
glUniform3f(uniform_volume_step, volume_step.x, volume_step.y, volume_step.z);
glActiveTexture(GL_TEXTURE0);
texture_bind(&volume_texture);
glUniform1i(uniform_volume_texture, 0);
shader_program_unbind(&program);
return 1;
}
static void
clutter_glx_texture_pixmap_update_area (ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height)
{
ClutterGLXTexturePixmapPrivate *priv;
Display *dpy;
CLUTTER_NOTE (TEXTURE, "Updating texture pixmap");
priv = CLUTTER_GLX_TEXTURE_PIXMAP (texture)->priv;
dpy = clutter_x11_get_default_display();
if (!CLUTTER_ACTOR_IS_REALIZED (texture))
return;
if (priv->use_fallback)
{
CLUTTER_NOTE (TEXTURE, "Falling back to X11");
parent_class->update_area (texture,
x, y,
width, height);
return;
}
if (priv->glx_pixmap == None)
return;
if (texture_bind (CLUTTER_GLX_TEXTURE_PIXMAP(texture)))
{
CLUTTER_NOTE (TEXTURE, "Really updating via GLX");
clutter_x11_trap_x_errors ();
(_gl_bind_tex_image) (dpy,
priv->glx_pixmap,
GLX_FRONT_LEFT_EXT,
NULL);
XSync (clutter_x11_get_default_display(), FALSE);
/* Note above fires X error for non name pixmaps - but
* things still seem to work - i.e pixmap updated
*/
if (clutter_x11_untrap_x_errors ())
CLUTTER_NOTE (TEXTURE, "Update bind_tex_image failed");
priv->bound = TRUE;
}
else
g_warning ("Failed to bind initial tex");
if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR(texture)))
clutter_actor_queue_redraw (CLUTTER_ACTOR(texture));
}
void render_update_volume_tex(void)
{
static int init = 0;
if(init) {
// если текстура уже инициализирована, то сначало удаляем её
texture_release(&volume_texture);
init = 0;
}
// создаем текстуру с данными скалярного поля.
// используем только red компоненту
texture_create3d_from_data(&volume_texture, GL_R32F, GL_RED,
volume_size.x, volume_size.y, volume_size.z,
GL_FLOAT, (void*) volume);
texture_bind(&volume_texture);
glUniform3f(uniform_volume_step, volume_step.x, volume_step.y, volume_step.z);
init = 1;
}
void sprite_draw(Sprite* sprite, const mat4* view, GLuint umatrix_id, GLuint utexture_id) {
mat4 mvp;
m4_x_m4(&mvp, view, &sprite->transform);
glUniformMatrix4fv(umatrix_id, 1, GL_FALSE, (float*) &mvp);
texture_bind(sprite->texture);
glUniform1i(utexture_id, 0);
int i;
for(i = 0; i < NB_VERTEX_ATTRIB; ++i) {
glEnableVertexAttribArray(i);
buffer_bind(sprite->attributes[i].buffer);
glVertexAttribPointer(i, sprite->attributes[i].size, GL_FLOAT, GL_FALSE, 0, NULL);
}
glDrawArrays(GL_TRIANGLES, 0, num_vertices);
for(i = 0; i < NB_VERTEX_ATTRIB; ++i) {
glDisableVertexAttribArray(i);
}
}
void render_draw(void)
{
IF_FAILED(init);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glActiveTexture(GL_TEXTURE0);
texture_bind(&volume_texture);
shader_program_bind(&program);
glBindVertexArray(vao);
glEnableVertexAttribArray(attr_position);
glDrawElements(GL_TRIANGLES, num_elements, GL_UNSIGNED_INT, NULL);
glDisableVertexAttribArray(attr_position);
glBindVertexArray(0);
shader_program_unbind(&program);
}
void RenderTarget::draw(Shader* shader, const glm::vec2& pos, const glm::vec2& size){
glm::mat4 model(1.f);
model = glm::translate(model, glm::vec3(pos.x, pos.y, 0.0f));
model = glm::scale(model, glm::vec3(size.x, size.y, 1.0f));
Shader::upload_model_matrix(model);
shader->bind();
texture_bind(Shader::TEXTURE_2D_0);
depth_bind(Shader::TEXTURE_2D_1);
glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo[1]);
glVertexAttribPointer(Shader::ATTR_POSITION, 3, GL_FLOAT, GL_FALSE, sizeof(Shader::vertex_t), (const GLvoid*)offsetof(Shader::vertex_t, pos));
glVertexAttribPointer(Shader::ATTR_TEXCOORD, 2, GL_FLOAT, GL_FALSE, sizeof(Shader::vertex_t), (const GLvoid*)offsetof(Shader::vertex_t, uv));
glVertexAttribPointer(Shader::ATTR_NORMAL, 3, GL_FLOAT, GL_FALSE, sizeof(Shader::vertex_t), (const GLvoid*)offsetof(Shader::vertex_t, normal));
glVertexAttribPointer(Shader::ATTR_TANGENT, 3, GL_FLOAT, GL_FALSE, sizeof(Shader::vertex_t), (const GLvoid*)offsetof(Shader::vertex_t, tangent));
glVertexAttribPointer(Shader::ATTR_BITANGENT, 3, GL_FLOAT, GL_FALSE, sizeof(Shader::vertex_t), (const GLvoid*)offsetof(Shader::vertex_t, bitangent));
glVertexAttribPointer(Shader::ATTR_COLOR, 4, GL_FLOAT, GL_FALSE, sizeof(Shader::vertex_t), (const GLvoid*)offsetof(Shader::vertex_t, color));
glDrawElements(GL_QUADS, 4, GL_UNSIGNED_INT, 0);
}
static void
clutter_glx_texture_pixmap_free_glx_pixmap (ClutterGLXTexturePixmap *texture)
{
ClutterGLXTexturePixmapPrivate *priv = texture->priv;
Display *dpy;
dpy = clutter_x11_get_default_display ();
if (priv->glx_pixmap &&
priv->bound)
{
texture_bind (texture);
clutter_x11_trap_x_errors ();
(_gl_release_tex_image) (dpy,
priv->glx_pixmap,
GLX_FRONT_LEFT_EXT);
XSync (clutter_x11_get_default_display(), FALSE);
if (clutter_x11_untrap_x_errors ())
CLUTTER_NOTE (TEXTURE, "Failed to release?");
CLUTTER_NOTE (TEXTURE, "Destroyed pxm: %li", priv->glx_pixmap);
priv->bound = FALSE;
}
clutter_x11_trap_x_errors ();
if (priv->glx_pixmap)
glXDestroyGLXPixmap (dpy, priv->glx_pixmap);
XSync (dpy, FALSE);
clutter_x11_untrap_x_errors ();
priv->glx_pixmap = None;
}
void con_render(renderer_t r)
{
unsigned int width, height;
if ( NULL == con_default )
return;
renderer_size(r, &width, &height);
if ( CONSOLE_HIDDEN == con_default->state) {
/* todo: draw the "last 4 lines" */
} else {
float pitchx, pitchy;
int i, offs, cursor_screen_offs;
font_get_pitch(con_default->font, &pitchx, &pitchy);
int const num_lines = con_display_lines;
int const visible_height = pitchy * (num_lines + 1);
int const border_top = height - visible_height - 5;
if (con_default->conback) {
glEnable(GL_TEXTURE_2D);
texture_bind(con_default->conback);
/* try toggling disabling blend - looks nice in different ways in each setting */
/* glDisable(GL_BLEND); */
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glBegin(GL_QUADS);
glColor4f(1,1,1,1);
glTexCoord2f(0, 0); glVertex2i(0, border_top);
glTexCoord2f(1, 0); glVertex2i(width, border_top);
glTexCoord2f(1, 1); glVertex2i(width, height);
glTexCoord2f(0, 1); glVertex2i(0, height);
glEnd();
glEnable(GL_BLEND);
} else {
glDisable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
glColor4f(0, 1.f, 0, 0.f);
glVertex2i(0, border_top);
glVertex2i(width, border_top);
glVertex2i(width, height);
glVertex2i(0, height);
glEnd();
glEnable(GL_TEXTURE_2D);
}
offs = (con_default->lines_size % CONSOLE_MAX_LINES) - num_lines;
for(i = 0; i < num_lines; i++, offs++) {
if (offs < 0 && con_default->lines_size < CONSOLE_MAX_LINES) {
/* well, this line hasn't actually been typed, so do nothing. */
} else {
if (offs < 0) offs += CONSOLE_MAX_LINES;
font_print(con_default->font, 0, border_top + i * pitchy, con_default->lines[offs % CONSOLE_MAX_LINES]);
}
}
/* offset the input line if it's wider than the screen can show. we also keep a buffer of 3 characters at the "other side" of it, so that inplace editing is a bit more sensible. */
/* todo: blatantly should be able to move the character "within" the buffer within a current line when offset, and only scroll when at the left- or right- edges. */
/* should probably do this with a "current line display window" type concept. */
offs = 0;
cursor_screen_offs = con_default->cursor_offs;
if (pitchx * con_default->cursor_offs > width) {
offs = con_default->cursor_offs - (width / pitchx) + 3;
offs = offs < 0 ? 0 : offs;
cursor_screen_offs = (width / pitchx) - 3;
}
font_print(con_default->font, 0, height - pitchy, &con_default->input_line[offs]);
/* flashing cursor */
if (SDL_GetTicks() % 1000 < 500) {
glBegin(GL_QUADS);
glColor4f(1,1,1,1);
glVertex2i(cursor_screen_offs * pitchx, height);
glVertex2i(cursor_screen_offs * pitchx + pitchx, height);
glVertex2i(cursor_screen_offs * pitchx + pitchx, height - 2);
glVertex2i(cursor_screen_offs * pitchx, height - 2);
glEnd();
}
}
}
void texture_download(gfx_texture* texture, SDL_Surface* target) {
texture_bind(texture, TEX_UNIT_0);
SDL_LockSurface(target);
glGetTexImage(GL_TEXTURE_2D, _LOD, GL_RGBA, GL_UNSIGNED_BYTE, target->pixels );
SDL_UnlockSurface(target);
}