dxt_display.h File Reference

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Functions
int	dxt_display_image (const char *title, DXT_IMAGE_TYPE *image, int width, int height)
int	dxt_display_image_comparison (DXT_IMAGE_TYPE *image, unsigned char *image_compressed, int image_compressed_size, enum dxt_type type, int width, int height)
int	dxt_display_image_compressed (const char *title, unsigned char *image_compressed, int image_compressed_size, enum dxt_type type, int width, int height)

Function Documentation

dxt_display_image()

int dxt_display_image	(	const char *	title,
		DXT_IMAGE_TYPE *	image,
		int	width,
		int	height )

Copyright (c) 2011, Martin Srom All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in the
  documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Display image

Parameters

window	title
image
width
height

Returns

decoder structure or zero if fails

Documented at declaration

Definition at line 198 of file dxt_display.c.

{
#ifdef DEBUG
    printf("Display Image [resolution: %dx%d]\n", width, height);
#endif
    
    dxt_display_init(title, DXT_TYPE_DXT1, width, height);
    
    glGenTextures(1, &g_display.texture_id);
    glBindTexture(GL_TEXTURE_2D, g_display.texture_id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    glTexImage2D(GL_TEXTURE_2D, 0, DXT_IMAGE_GL_FORMAT, width, height, 0, GL_RGBA, DXT_IMAGE_GL_TYPE, image);
    
    dxt_display_run();
    
    glDeleteShader(g_display.shader_fragment_display);
    glDeleteShader(g_display.shader_fragment_display_dxt5ycocg);
    glDeleteProgram(g_display.program_display);
    glDeleteProgram(g_display.program_display_dxt5ycocg);
}

References dxt_display_init(), dxt_display_run(), DXT_IMAGE_GL_FORMAT, DXT_IMAGE_GL_TYPE, DXT_TYPE_DXT1, g_display, dxt_display::height, dxt_display::program_display, dxt_display::program_display_dxt5ycocg, dxt_display::shader_fragment_display, dxt_display::shader_fragment_display_dxt5ycocg, dxt_display::texture_id, and dxt_display::width.

Referenced by perform_decode(), perform_display(), and perform_encode().

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dxt_display_image_comparison()

int dxt_display_image_comparison	(	DXT_IMAGE_TYPE *	image,
		unsigned char *	image_compressed,
		int	image_compressed_size,
		enum dxt_type	type,
		int	width,
		int	height )

Display comparison for image and compressed image

Parameters

window	title
image_compressed	Compressed image data
type
width
height

Returns

0 if succeeds, otherwise nonzero

Documented at declaration

Definition at line 248 of file dxt_display.c.

{
#ifdef DEBUG
    printf("Display Image Comparison [size: %d bytes, resolution: %dx%d]\n", image_compressed_size, width, height);
#endif
    
    dxt_display_init("Display Comparison", type, width, height);
    
    glGenTextures(1, &g_display.texture_id);
    glBindTexture(GL_TEXTURE_2D, g_display.texture_id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    glTexImage2D(GL_TEXTURE_2D, 0, DXT_IMAGE_GL_FORMAT, width, height, 0, GL_RGBA, DXT_IMAGE_GL_TYPE, image);
    
    glGenTextures(1, &g_display.texture_compressed_id);
    glBindTexture(GL_TEXTURE_2D, g_display.texture_compressed_id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    if ( g_display.type == DXT_TYPE_DXT5_YCOCG )
        glCompressedTexImage2DARB(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, width, height, 0, image_compressed_size, image_compressed);
    else
        glCompressedTexImage2DARB(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, width, height, 0, image_compressed_size, image_compressed);
    
    g_display.texture_current_id = g_display.texture_id;
    
    dxt_display_run();
    
    return 0;
}

References dxt_display_init(), dxt_display_run(), DXT_IMAGE_GL_FORMAT, DXT_IMAGE_GL_TYPE, DXT_TYPE_DXT5_YCOCG, g_display, dxt_display::height, dxt_display::texture_compressed_id, dxt_display::texture_current_id, dxt_display::texture_id, dxt_display::type, type, and dxt_display::width.

Referenced by perform_comparison().

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dxt_display_image_compressed()

int dxt_display_image_compressed	(	const char *	title,
		unsigned char *	image_compressed,
		int	image_compressed_size,
		enum dxt_type	type,
		int	width,
		int	height )

Display compressed image

Parameters

window	title
image_compressed	Compressed image data
type
width
height

Returns

0 if succeeds, otherwise nonzero

Documented at declaration

Definition at line 224 of file dxt_display.c.

{
#ifdef DEBUG
    printf("Display Compressed Image [size: %d bytes, resolution: %dx%d]\n", image_compressed_size, width, height);
#endif
    
    dxt_display_init(title, type, width, height);
    
    glGenTextures(1, &g_display.texture_compressed_id);
    glBindTexture(GL_TEXTURE_2D, g_display.texture_compressed_id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    if ( type == DXT_TYPE_DXT5_YCOCG )
        glCompressedTexImage2DARB(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, width, height, 0, image_compressed_size, image_compressed);
    else
        glCompressedTexImage2DARB(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, width, height, 0, image_compressed_size, image_compressed);
    
    dxt_display_run();
}

References dxt_display_init(), dxt_display_run(), DXT_TYPE_DXT5_YCOCG, g_display, dxt_display::height, dxt_display::texture_compressed_id, type, and dxt_display::width.

Referenced by perform_decode(), perform_display(), and perform_encode().

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