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Implement interleaved drawing of cells

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Kovid Goyal
2017-10-04 16:11:20 +05:30
parent 3f615666df
commit e1650d5df7
3 changed files with 33 additions and 5 deletions
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13
kitty/shaders.c
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@@ -300,10 +300,21 @@ draw_all_cells(Screen *screen) {
glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, screen->lines * screen->columns); check_gl();
}
static void
draw_cells_interleaved(Screen *screen) {
bind_program(CELL_BACKGROUND_PROGRAM);
glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, screen->lines * screen->columns); check_gl();
bind_program(CELL_SPECIAL_PROGRAM);
glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, screen->lines * screen->columns); check_gl();
bind_program(CELL_FOREGROUND_PROGRAM);
glDrawArraysInstanced(GL_TRIANGLE_FAN, 0, 4, screen->lines * screen->columns); check_gl();
}
static void
draw_cells_impl(ssize_t vao_idx, GLfloat xstart, GLfloat ystart, GLfloat dx, GLfloat dy, Screen *screen, CursorRenderInfo *cursor) {
cell_prepare_to_render(vao_idx, screen, xstart, ystart, dx, dy, cursor);
draw_all_cells(screen);
if (false) draw_cells_interleaved(screen);
else draw_all_cells(screen);
}
// }}}