c9df41c1e2
Typedef pointers are unsafe. If you do: typedef struct bla *bla_t; then you cannot use it as a constant, such as: const bla_t, because that constant will be to the pointer itself rather than to the underlying data. I admit this was a fundamental mistake that must be corrected. All typedefs that were pointer types will now have their pointers removed from the type itself, and the pointers will be used when they are actually used as variables/parameters/returns instead. This does not break ABI though, which is pretty nice.
124 lines
3.7 KiB
C
124 lines
3.7 KiB
C
/******************************************************************************
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Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include "gl-subsystem.h"
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static inline bool upload_texture_cube(struct gs_texture_cube *tex,
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const uint8_t **data)
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{
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uint32_t row_size = tex->size * gs_get_format_bpp(tex->base.format);
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uint32_t tex_size = tex->size * row_size / 8;
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uint32_t num_levels = tex->base.levels;
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bool compressed = gs_is_compressed_format(tex->base.format);
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GLenum gl_type = get_gl_format_type(tex->base.format);
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bool success = true;
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uint32_t i;
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if (!num_levels)
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num_levels = gs_get_total_levels(tex->size, tex->size);
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for (i = 0; i < 6; i++) {
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GLenum target = GL_TEXTURE_CUBE_MAP_POSITIVE_X + i;
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if (!gl_bind_texture(target, tex->base.texture))
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success = false;
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if (!gl_init_face(target, gl_type, num_levels,
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tex->base.gl_format,
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tex->base.gl_internal_format,
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compressed, tex->size, tex->size,
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tex_size, &data))
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success = false;
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if (!gl_bind_texture(target, 0))
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success = false;
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if (data)
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data++;
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}
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glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAX_LEVEL, num_levels);
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if (!gl_success("glTexParameteri"))
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success = false;
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return success;
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}
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gs_texture_t *device_cubetexture_create(gs_device_t *device, uint32_t size,
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enum gs_color_format color_format, uint32_t levels,
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const uint8_t **data, uint32_t flags)
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{
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struct gs_texture_cube *tex = bzalloc(sizeof(struct gs_texture_cube));
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tex->base.device = device;
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tex->base.type = GS_TEXTURE_CUBE;
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tex->base.format = color_format;
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tex->base.levels = levels;
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tex->base.gl_format = convert_gs_format(color_format);
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tex->base.gl_internal_format = convert_gs_internal_format(color_format);
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tex->base.gl_target = GL_TEXTURE_CUBE_MAP;
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tex->base.is_render_target = (flags & GS_RENDER_TARGET) != 0;
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tex->base.gen_mipmaps = (flags & GS_BUILD_MIPMAPS) != 0;
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tex->size = size;
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if (!gl_gen_textures(1, &tex->base.texture))
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goto fail;
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if (!upload_texture_cube(tex, data))
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goto fail;
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return (gs_texture_t*)tex;
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fail:
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gs_cubetexture_destroy((gs_texture_t*)tex);
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blog(LOG_ERROR, "device_cubetexture_create (GL) failed");
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return NULL;
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}
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void gs_cubetexture_destroy(gs_texture_t *tex)
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{
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if (!tex)
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return;
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if (tex->texture) {
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glDeleteTextures(1, &tex->texture);
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gl_success("glDeleteTextures");
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}
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bfree(tex);
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}
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static inline bool is_texture_cube(gs_texture_t *tex, const char *func)
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{
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bool is_texcube = tex->type == GS_TEXTURE_CUBE;
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if (!is_texcube)
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blog(LOG_ERROR, "%s (GL) failed: Not a cubemap texture", func);
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return is_texcube;
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}
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uint32_t gs_cubetexture_get_size(gs_texture_t *cubetex)
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{
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struct gs_texture_cube *cube = (struct gs_texture_cube*)cubetex;
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if (!is_texture_cube(cubetex, "gs_cubetexture_get_size"))
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return 0;
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return cube->size;
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}
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enum gs_color_format gs_cubetexture_get_color_format(gs_texture_t *cubetex)
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{
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return cubetex->format;
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}
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