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author | Tavian Barnes <tavianator@tavianator.com> | 2014-08-19 17:10:03 -0400 |
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committer | Tavian Barnes <tavianator@tavianator.com> | 2015-10-25 11:03:56 -0400 |
commit | 7b09710392d35fb55b52031d447a542d99fc6b4b (patch) | |
tree | 270eb927ee8c52ceeb99926ebf4843704775a610 /libdimension/gl.c | |
parent | 200c86b91ea7063d35be3bffc11c5da53c054653 (diff) | |
download | dimension-7b09710392d35fb55b52031d447a542d99fc6b4b.tar.xz |
Modularize the libdimension codebase.
Diffstat (limited to 'libdimension/gl.c')
-rw-r--r-- | libdimension/gl.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/libdimension/gl.c b/libdimension/gl.c deleted file mode 100644 index 77099d2..0000000 --- a/libdimension/gl.c +++ /dev/null @@ -1,111 +0,0 @@ -/************************************************************************* - * Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.com> * - * * - * This file is part of The Dimension Library. * - * * - * The Dimension Library is free software; you can redistribute it and/ * - * or modify it under the terms of the GNU Lesser General Public License * - * as published by the Free Software Foundation; either version 3 of the * - * License, or (at your option) any later version. * - * * - * The Dimension Library 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 * - * Lesser General Public License for more details. * - * * - * You should have received a copy of the GNU Lesser General Public * - * License along with this program. If not, see * - * <http://www.gnu.org/licenses/>. * - *************************************************************************/ - -/** - * @file - * OpenGL import/export. - */ - -#include "dimension-internal.h" -#include <GL/gl.h> -#include <stdlib.h> -#include <stdint.h> - -// Optimize canvas for GL drawing -int -dmnsn_gl_optimize_canvas(dmnsn_pool *pool, dmnsn_canvas *canvas) -{ - dmnsn_rgba8_optimize_canvas(pool, canvas); - return 0; -} - -// Write canvas to GL framebuffer. Returns 0 on success, nonzero on failure -int -dmnsn_gl_write_canvas(const dmnsn_canvas *canvas) -{ - size_t width = canvas->width; - size_t height = canvas->height; - - // Check if we can optimize this - dmnsn_rgba8_optimizer *rgba8 = (dmnsn_rgba8_optimizer *)dmnsn_canvas_find_optimizer(canvas, dmnsn_rgba8_optimizer_fn); - if (rgba8) { - glDrawPixels(width, height, GL_RGBA, GL_UNSIGNED_BYTE, rgba8->data); - return glGetError() == GL_NO_ERROR ? 0 : 1; - } - - // We couldn't, so transform the canvas to RGB now - GLubyte *pixels = dmnsn_malloc(4*width*height*sizeof(GLubyte)); - - for (size_t y = 0; y < height; ++y) { - for (size_t x = 0; x < width; ++x) { - GLubyte *pixel = pixels + 4*(y*width + x); - - dmnsn_tcolor tcolor = dmnsn_canvas_get_pixel(canvas, x, y); - tcolor = dmnsn_tcolor_remove_filter(tcolor); - tcolor.c = dmnsn_color_to_sRGB(tcolor.c); - tcolor = dmnsn_tcolor_clamp(tcolor); - - pixel[0] = lround(tcolor.c.R*UINT8_MAX); - pixel[1] = lround(tcolor.c.G*UINT8_MAX); - pixel[2] = lround(tcolor.c.B*UINT8_MAX); - pixel[3] = lround(tcolor.T*UINT8_MAX); - } - } - - glDrawPixels(width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels); - - dmnsn_free(pixels); - return glGetError() == GL_NO_ERROR ? 0 : 1; -} - -// Read a canvas from a GL framebuffer. Returns NULL on failure. -int -dmnsn_gl_read_canvas(dmnsn_canvas *canvas, size_t x0, size_t y0) -{ - size_t width = canvas->width; - size_t height = canvas->height; - - // Array of 16-bit ints in RGBA order - GLushort *pixels = dmnsn_malloc(4*width*height*sizeof(GLushort)); - glReadPixels(x0, y0, width, height, GL_RGBA, GL_UNSIGNED_SHORT, pixels); - if (glGetError() != GL_NO_ERROR) { - dmnsn_free(pixels); - return -1; - } - - for (size_t y = 0; y < height; ++y) { - for (size_t x = 0; x < width; ++x) { - GLushort *pixel = pixels + 4*(y*width + x); - - dmnsn_tcolor tcolor = dmnsn_new_tcolor5( - (double)pixel[0]/UINT16_MAX, - (double)pixel[1]/UINT16_MAX, - (double)pixel[2]/UINT16_MAX, - (double)pixel[3]/UINT16_MAX, - 0.0 - ); - tcolor.c = dmnsn_color_from_sRGB(tcolor.c); - dmnsn_canvas_set_pixel(canvas, x, y, tcolor); - } - } - - dmnsn_free(pixels); - return 0; -} |