parent
dcce0ed11b
commit
e80d426872
GPG Key ID:
2B7BF9531FF03BE8
|
Before Width: | Height: | Size: 20 KiB After Width: | Height: | Size: 4.9 KiB |
@ -0,0 +1,14 @@ |
|||||||
|
#version 330 |
||||||
|
|
||||||
|
// viewsize.x = viewport width in pixels; viewsize.y = viewport height in pixels |
||||||
|
uniform vec2 viewsize; |
||||||
|
// texture uv coordinate in texture space |
||||||
|
in vec2 texture_coord; |
||||||
|
uniform sampler2D texture_sampler; |
||||||
|
|
||||||
|
out vec4 color; |
||||||
|
|
||||||
|
void main() |
||||||
|
{ |
||||||
|
color = mix(vec4(0.0f,0.0f,0.0f,1.0f), vec4(1.0f,1.0f,1.0f,1.0f), texture(texture_sampler, texture_coord)) + vec4(1.0f,0.0f,0.0f,1.0f); |
||||||
|
} |
||||||
@ -0,0 +1,20 @@ |
|||||||
|
#version 330 core |
||||||
|
|
||||||
|
// viewsize.x = viewport width in pixels; viewsize.y = viewport height in pixels |
||||||
|
uniform vec2 viewsize; |
||||||
|
|
||||||
|
// both position and and uv are in pixels |
||||||
|
layout(location = 0) in vec2 position; |
||||||
|
layout(location = 1) in vec2 uv; |
||||||
|
|
||||||
|
out vec2 texture_coord; |
||||||
|
|
||||||
|
void main() |
||||||
|
{ |
||||||
|
vec4 pos = vec4(position.x, position.y, 0.0f, 1.0f); |
||||||
|
vec2 v = viewsize / 2; |
||||||
|
pos.xy = (pos.xy - v) / v; |
||||||
|
|
||||||
|
gl_Position = pos; |
||||||
|
texture_coord = uv / viewsize; |
||||||
|
} |
||||||
@ -1,3 +0,0 @@ |
|||||||
build |
|
||||||
.vscode |
|
||||||
.DS_Store |
|
||||||
@ -1,27 +0,0 @@ |
|||||||
# msdf_c 0.1 |
|
||||||
A pure C99 multi-channel signed distance field generator. Handles MSDF bitmap |
|
||||||
Generation from given ttf/otf font (outlines). |
|
||||||
Single Header STB-style library |
|
||||||
|
|
||||||
--- |
|
||||||
|
|
||||||
[This library is my take on improving msdf-c with some fixes and improving its API](https://github.com/solenum/msdf-c) |
|
||||||
|
|
||||||
[Based on the C++ implementation by Viktor Chlumský.](https://github.com/Chlumsky/msdfgen) |
|
||||||
|
|
||||||
~~~ |
|
||||||
// example fragment shader |
|
||||||
// scale is render_width/glyph_width |
|
||||||
// render_width being the width of each rendered glyph |
|
||||||
float median(float r, float g, float b) { |
|
||||||
return max(min(r, g), min(max(r, g), b)); |
|
||||||
} |
|
||||||
|
|
||||||
void main() |
|
||||||
{ |
|
||||||
vec3 sample = texture(u_texture, uv).rgb; |
|
||||||
float dist = scale * (median(sample.r, sample.g, sample.b) - 0.5); |
|
||||||
float o = clamp(dist + 0.5, 0.0, 1.0); |
|
||||||
color = vec4(vec3(1.0), o); |
|
||||||
} |
|
||||||
~~~ |
|
||||||
@ -1,4 +0,0 @@ |
|||||||
#define STB_TRUETYPE_IMPLEMENTATION |
|
||||||
#include "stb_truetype.h" |
|
||||||
#define MSDF_IMPLEMENTATION |
|
||||||
#include "msdf.h" |
|
||||||
File diff suppressed because it is too large
Load Diff
Binary file not shown.
@ -1,201 +0,0 @@ |
|||||||
Apache License |
|
||||||
Version 2.0, January 2004 |
|
||||||
http://www.apache.org/licenses/ |
|
||||||
|
|
||||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION |
|
||||||
|
|
||||||
1. Definitions. |
|
||||||
|
|
||||||
"License" shall mean the terms and conditions for use, reproduction, |
|
||||||
and distribution as defined by Sections 1 through 9 of this document. |
|
||||||
|
|
||||||
"Licensor" shall mean the copyright owner or entity authorized by |
|
||||||
the copyright owner that is granting the License. |
|
||||||
|
|
||||||
"Legal Entity" shall mean the union of the acting entity and all |
|
||||||
other entities that control, are controlled by, or are under common |
|
||||||
control with that entity. For the purposes of this definition, |
|
||||||
"control" means (i) the power, direct or indirect, to cause the |
|
||||||
direction or management of such entity, whether by contract or |
|
||||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the |
|
||||||
outstanding shares, or (iii) beneficial ownership of such entity. |
|
||||||
|
|
||||||
"You" (or "Your") shall mean an individual or Legal Entity |
|
||||||
exercising permissions granted by this License. |
|
||||||
|
|
||||||
"Source" form shall mean the preferred form for making modifications, |
|
||||||
including but not limited to software source code, documentation |
|
||||||
source, and configuration files. |
|
||||||
|
|
||||||
"Object" form shall mean any form resulting from mechanical |
|
||||||
transformation or translation of a Source form, including but |
|
||||||
not limited to compiled object code, generated documentation, |
|
||||||
and conversions to other media types. |
|
||||||
|
|
||||||
"Work" shall mean the work of authorship, whether in Source or |
|
||||||
Object form, made available under the License, as indicated by a |
|
||||||
copyright notice that is included in or attached to the work |
|
||||||
(an example is provided in the Appendix below). |
|
||||||
|
|
||||||
"Derivative Works" shall mean any work, whether in Source or Object |
|
||||||
form, that is based on (or derived from) the Work and for which the |
|
||||||
editorial revisions, annotations, elaborations, or other modifications |
|
||||||
represent, as a whole, an original work of authorship. For the purposes |
|
||||||
of this License, Derivative Works shall not include works that remain |
|
||||||
separable from, or merely link (or bind by name) to the interfaces of, |
|
||||||
the Work and Derivative Works thereof. |
|
||||||
|
|
||||||
"Contribution" shall mean any work of authorship, including |
|
||||||
the original version of the Work and any modifications or additions |
|
||||||
to that Work or Derivative Works thereof, that is intentionally |
|
||||||
submitted to Licensor for inclusion in the Work by the copyright owner |
|
||||||
or by an individual or Legal Entity authorized to submit on behalf of |
|
||||||
the copyright owner. For the purposes of this definition, "submitted" |
|
||||||
means any form of electronic, verbal, or written communication sent |
|
||||||
to the Licensor or its representatives, including but not limited to |
|
||||||
communication on electronic mailing lists, source code control systems, |
|
||||||
and issue tracking systems that are managed by, or on behalf of, the |
|
||||||
Licensor for the purpose of discussing and improving the Work, but |
|
||||||
excluding communication that is conspicuously marked or otherwise |
|
||||||
designated in writing by the copyright owner as "Not a Contribution." |
|
||||||
|
|
||||||
"Contributor" shall mean Licensor and any individual or Legal Entity |
|
||||||
on behalf of whom a Contribution has been received by Licensor and |
|
||||||
subsequently incorporated within the Work. |
|
||||||
|
|
||||||
2. Grant of Copyright License. Subject to the terms and conditions of |
|
||||||
this License, each Contributor hereby grants to You a perpetual, |
|
||||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable |
|
||||||
copyright license to reproduce, prepare Derivative Works of, |
|
||||||
publicly display, publicly perform, sublicense, and distribute the |
|
||||||
Work and such Derivative Works in Source or Object form. |
|
||||||
|
|
||||||
3. Grant of Patent License. Subject to the terms and conditions of |
|
||||||
this License, each Contributor hereby grants to You a perpetual, |
|
||||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable |
|
||||||
(except as stated in this section) patent license to make, have made, |
|
||||||
use, offer to sell, sell, import, and otherwise transfer the Work, |
|
||||||
where such license applies only to those patent claims licensable |
|
||||||
by such Contributor that are necessarily infringed by their |
|
||||||
Contribution(s) alone or by combination of their Contribution(s) |
|
||||||
with the Work to which such Contribution(s) was submitted. If You |
|
||||||
institute patent litigation against any entity (including a |
|
||||||
cross-claim or counterclaim in a lawsuit) alleging that the Work |
|
||||||
or a Contribution incorporated within the Work constitutes direct |
|
||||||
or contributory patent infringement, then any patent licenses |
|
||||||
granted to You under this License for that Work shall terminate |
|
||||||
as of the date such litigation is filed. |
|
||||||
|
|
||||||
4. Redistribution. You may reproduce and distribute copies of the |
|
||||||
Work or Derivative Works thereof in any medium, with or without |
|
||||||
modifications, and in Source or Object form, provided that You |
|
||||||
meet the following conditions: |
|
||||||
|
|
||||||
(a) You must give any other recipients of the Work or |
|
||||||
Derivative Works a copy of this License; and |
|
||||||
|
|
||||||
(b) You must cause any modified files to carry prominent notices |
|
||||||
stating that You changed the files; and |
|
||||||
|
|
||||||
(c) You must retain, in the Source form of any Derivative Works |
|
||||||
that You distribute, all copyright, patent, trademark, and |
|
||||||
attribution notices from the Source form of the Work, |
|
||||||
excluding those notices that do not pertain to any part of |
|
||||||
the Derivative Works; and |
|
||||||
|
|
||||||
(d) If the Work includes a "NOTICE" text file as part of its |
|
||||||
distribution, then any Derivative Works that You distribute must |
|
||||||
include a readable copy of the attribution notices contained |
|
||||||
within such NOTICE file, excluding those notices that do not |
|
||||||
pertain to any part of the Derivative Works, in at least one |
|
||||||
of the following places: within a NOTICE text file distributed |
|
||||||
as part of the Derivative Works; within the Source form or |
|
||||||
documentation, if provided along with the Derivative Works; or, |
|
||||||
within a display generated by the Derivative Works, if and |
|
||||||
wherever such third-party notices normally appear. The contents |
|
||||||
of the NOTICE file are for informational purposes only and |
|
||||||
do not modify the License. You may add Your own attribution |
|
||||||
notices within Derivative Works that You distribute, alongside |
|
||||||
or as an addendum to the NOTICE text from the Work, provided |
|
||||||
that such additional attribution notices cannot be construed |
|
||||||
as modifying the License. |
|
||||||
|
|
||||||
You may add Your own copyright statement to Your modifications and |
|
||||||
may provide additional or different license terms and conditions |
|
||||||
for use, reproduction, or distribution of Your modifications, or |
|
||||||
for any such Derivative Works as a whole, provided Your use, |
|
||||||
reproduction, and distribution of the Work otherwise complies with |
|
||||||
the conditions stated in this License. |
|
||||||
|
|
||||||
5. Submission of Contributions. Unless You explicitly state otherwise, |
|
||||||
any Contribution intentionally submitted for inclusion in the Work |
|
||||||
by You to the Licensor shall be under the terms and conditions of |
|
||||||
this License, without any additional terms or conditions. |
|
||||||
Notwithstanding the above, nothing herein shall supersede or modify |
|
||||||
the terms of any separate license agreement you may have executed |
|
||||||
with Licensor regarding such Contributions. |
|
||||||
|
|
||||||
6. Trademarks. This License does not grant permission to use the trade |
|
||||||
names, trademarks, service marks, or product names of the Licensor, |
|
||||||
except as required for reasonable and customary use in describing the |
|
||||||
origin of the Work and reproducing the content of the NOTICE file. |
|
||||||
|
|
||||||
7. Disclaimer of Warranty. Unless required by applicable law or |
|
||||||
agreed to in writing, Licensor provides the Work (and each |
|
||||||
Contributor provides its Contributions) on an "AS IS" BASIS, |
|
||||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
|
||||||
implied, including, without limitation, any warranties or conditions |
|
||||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A |
|
||||||
PARTICULAR PURPOSE. You are solely responsible for determining the |
|
||||||
appropriateness of using or redistributing the Work and assume any |
|
||||||
risks associated with Your exercise of permissions under this License. |
|
||||||
|
|
||||||
8. Limitation of Liability. In no event and under no legal theory, |
|
||||||
whether in tort (including negligence), contract, or otherwise, |
|
||||||
unless required by applicable law (such as deliberate and grossly |
|
||||||
negligent acts) or agreed to in writing, shall any Contributor be |
|
||||||
liable to You for damages, including any direct, indirect, special, |
|
||||||
incidental, or consequential damages of any character arising as a |
|
||||||
result of this License or out of the use or inability to use the |
|
||||||
Work (including but not limited to damages for loss of goodwill, |
|
||||||
work stoppage, computer failure or malfunction, or any and all |
|
||||||
other commercial damages or losses), even if such Contributor |
|
||||||
has been advised of the possibility of such damages. |
|
||||||
|
|
||||||
9. Accepting Warranty or Additional Liability. While redistributing |
|
||||||
the Work or Derivative Works thereof, You may choose to offer, |
|
||||||
and charge a fee for, acceptance of support, warranty, indemnity, |
|
||||||
or other liability obligations and/or rights consistent with this |
|
||||||
License. However, in accepting such obligations, You may act only |
|
||||||
on Your own behalf and on Your sole responsibility, not on behalf |
|
||||||
of any other Contributor, and only if You agree to indemnify, |
|
||||||
defend, and hold each Contributor harmless for any liability |
|
||||||
incurred by, or claims asserted against, such Contributor by reason |
|
||||||
of your accepting any such warranty or additional liability. |
|
||||||
|
|
||||||
END OF TERMS AND CONDITIONS |
|
||||||
|
|
||||||
APPENDIX: How to apply the Apache License to your work. |
|
||||||
|
|
||||||
To apply the Apache License to your work, attach the following |
|
||||||
boilerplate notice, with the fields enclosed by brackets "[]" |
|
||||||
replaced with your own identifying information. (Don't include |
|
||||||
the brackets!) The text should be enclosed in the appropriate |
|
||||||
comment syntax for the file format. We also recommend that a |
|
||||||
file or class name and description of purpose be included on the |
|
||||||
same "printed page" as the copyright notice for easier |
|
||||||
identification within third-party archives. |
|
||||||
|
|
||||||
Copyright [yyyy] [name of copyright owner] |
|
||||||
|
|
||||||
Licensed under the Apache License, Version 2.0 (the "License"); |
|
||||||
you may not use this file except in compliance with the License. |
|
||||||
You may obtain a copy of the License at |
|
||||||
|
|
||||||
http://www.apache.org/licenses/LICENSE-2.0 |
|
||||||
|
|
||||||
Unless required by applicable law or agreed to in writing, software |
|
||||||
distributed under the License is distributed on an "AS IS" BASIS, |
|
||||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
||||||
See the License for the specific language governing permissions and |
|
||||||
limitations under the License. |
|
||||||
Binary file not shown.
@ -1,210 +0,0 @@ |
|||||||
//#include "svpng.h"
|
|
||||||
#define STB_IMAGE_WRITE_IMPLEMENTATION |
|
||||||
#include "stb_image_write.h" |
|
||||||
#define STB_TRUETYPE_IMPLEMENTATION |
|
||||||
#include "../stb_truetype.h" |
|
||||||
#define MSDF_IMPLEMENTATION |
|
||||||
#include "../msdf.h" |
|
||||||
|
|
||||||
#include "stdio.h" |
|
||||||
|
|
||||||
|
|
||||||
#ifndef SAMPLE_ROOT |
|
||||||
#define SAMPLE_ROOT "" |
|
||||||
#endif |
|
||||||
|
|
||||||
typedef struct Range { |
|
||||||
void* content; |
|
||||||
size_t size; |
|
||||||
} Range; |
|
||||||
|
|
||||||
Range g_fileRead(const char* fileName) { |
|
||||||
Range range = {NULL, 0}; |
|
||||||
|
|
||||||
FILE* fileHandle = fopen(fileName, "rb"); |
|
||||||
if (fileHandle == NULL) { |
|
||||||
assert(!"File not fount"); |
|
||||||
return range; |
|
||||||
} |
|
||||||
|
|
||||||
fseek(fileHandle, 0, SEEK_END); // seek to end of file
|
|
||||||
size_t size = ftell(fileHandle); // get current file pointer
|
|
||||||
fseek(fileHandle, 0, SEEK_SET); // seek back to beginning of file
|
|
||||||
|
|
||||||
if (size == 0) { |
|
||||||
assert(!"File size zero"); |
|
||||||
return range; |
|
||||||
} |
|
||||||
|
|
||||||
void* mem = malloc(size); |
|
||||||
size_t readSize = fread(mem, 1, size, fileHandle); |
|
||||||
if (readSize == size) { |
|
||||||
range.content = mem; |
|
||||||
range.size = size; |
|
||||||
} else { |
|
||||||
free(mem); |
|
||||||
} |
|
||||||
fclose(fileHandle); |
|
||||||
return range; |
|
||||||
} |
|
||||||
|
|
||||||
static void* g_alloc(size_t size, void* ctx) { |
|
||||||
return malloc(size); |
|
||||||
} |
|
||||||
|
|
||||||
static void g_free(void* ptr, void* ctx) { |
|
||||||
return free(ptr); |
|
||||||
} |
|
||||||
|
|
||||||
float g_min(float a, float b) { |
|
||||||
return a > b ? b : a; |
|
||||||
} |
|
||||||
|
|
||||||
float g_max(float a, float b) { |
|
||||||
return a > b ? a : b; |
|
||||||
} |
|
||||||
|
|
||||||
float g_clamp(float val, float min, float max) { |
|
||||||
return g_min(g_max(val, min), max); |
|
||||||
} |
|
||||||
|
|
||||||
float g_median(float r, float g, float b) { |
|
||||||
return g_max(g_min(r, g), g_min(g_max(r, g), b)); |
|
||||||
} |
|
||||||
|
|
||||||
float g_map(float min, float max, float v) { |
|
||||||
return (v - min) / (max - min); |
|
||||||
} |
|
||||||
|
|
||||||
int main() { |
|
||||||
stbtt_fontinfo stbttInfo; |
|
||||||
|
|
||||||
Range fontFile = g_fileRead("./fonts/Roboto-Regular.ttf"); |
|
||||||
|
|
||||||
if (fontFile.content == NULL) { |
|
||||||
assert(!"could not load font from disk"); |
|
||||||
return 1; |
|
||||||
} |
|
||||||
|
|
||||||
if (!stbtt_InitFont(&stbttInfo, fontFile.content, stbtt_GetFontOffsetForIndex(fontFile.content, 0))) { |
|
||||||
assert(!"Couldn't parse font"); |
|
||||||
return 1; |
|
||||||
} |
|
||||||
|
|
||||||
|
|
||||||
int ascent, descent; |
|
||||||
stbtt_GetFontVMetrics(&stbttInfo, &ascent, &descent, 0); |
|
||||||
|
|
||||||
int borderSize = 4; |
|
||||||
int genSize = 32+borderSize; |
|
||||||
float genScale = stbtt_ScaleForPixelHeight(&stbttInfo, genSize); |
|
||||||
|
|
||||||
// int glyph = 0x00e8; // è
|
|
||||||
int glyph = 0x069D; |
|
||||||
|
|
||||||
int glyphIdx = stbtt_FindGlyphIndex(&stbttInfo, glyph); |
|
||||||
|
|
||||||
msdf_AllocCtx allocCtx = {g_alloc, g_free, NULL}; |
|
||||||
|
|
||||||
|
|
||||||
printf("bruh\n"); |
|
||||||
|
|
||||||
msdf_Result result; |
|
||||||
int success = msdf_genGlyph(&result, &stbttInfo, glyphIdx, borderSize, genScale, 2.0f / genSize, &allocCtx); |
|
||||||
|
|
||||||
if (success == 0) { |
|
||||||
assert(!"Failed to generate msdf glyph"); |
|
||||||
return 1; |
|
||||||
} |
|
||||||
printf("bruh\n"); |
|
||||||
|
|
||||||
// FILE* fp = fopen(SAMPLE_ROOT "/sdf.png", "wb");
|
|
||||||
|
|
||||||
uint8_t* pixels = malloc(sizeof(uint8_t) * result.width * result.height * 3); |
|
||||||
float scale = genSize; |
|
||||||
float maxValue = 1.0 * (scale); |
|
||||||
float transistionWidth = ((((((float) genSize) * 0.7f) + scale) / (scale * 2.0f))); |
|
||||||
float transistionAbs = (transistionWidth - 0.5); |
|
||||||
float transistStart = 0.5 - transistionAbs / 2; |
|
||||||
float transistEnd = transistStart + transistionAbs; |
|
||||||
|
|
||||||
//float ff = expf(0.01);
|
|
||||||
for (int y = 0; y < result.height; y++) { |
|
||||||
int yPos = result.width * 3 * y; |
|
||||||
uint8_t* pixelRow = pixels + (y * result.width * 3); |
|
||||||
for (int x = 0; x < result.width; x++) { |
|
||||||
int indexSdf = yPos + (x * 3); |
|
||||||
float r = result.rgb[indexSdf + 0]; |
|
||||||
float g = result.rgb[indexSdf + 1]; |
|
||||||
float b = result.rgb[indexSdf + 2]; |
|
||||||
|
|
||||||
|
|
||||||
r = ((((r) + scale) / (scale * 2.0f))); |
|
||||||
g = ((((g) + scale) / (scale * 2.0f))); |
|
||||||
b = ((((b) + scale) / (scale * 2.0f))); |
|
||||||
|
|
||||||
if (r > transistStart) { |
|
||||||
if (r > (transistEnd)) { |
|
||||||
r = 1.0f; |
|
||||||
} else { |
|
||||||
r = 0.0f + (r - transistStart) / (transistionAbs); |
|
||||||
} |
|
||||||
} else { |
|
||||||
r = 0.0f; |
|
||||||
} |
|
||||||
if (g > transistStart) { |
|
||||||
if (g > (transistEnd)) { |
|
||||||
g = 1.0f; |
|
||||||
} else { |
|
||||||
g = 0.0f + (g - transistStart) / (transistionAbs); |
|
||||||
} |
|
||||||
} else { |
|
||||||
g = 0.0f; |
|
||||||
} |
|
||||||
if (b > transistStart) { |
|
||||||
if (b > (transistEnd)) { |
|
||||||
b = 1.0f; |
|
||||||
} else { |
|
||||||
b = 0.0f + (b - transistStart) / (transistionAbs); |
|
||||||
} |
|
||||||
} else { |
|
||||||
b = 0.0f; |
|
||||||
} |
|
||||||
|
|
||||||
pixelRow[x * 3 + 0] = r * 255.0f; // (r > 0.5f) ? 255.0f : r * 255.0f;
|
|
||||||
pixelRow[x * 3 + 1] = g * 255.0f; // (g > 0.5f) ? 255.0f : g * 255.0f;
|
|
||||||
pixelRow[x * 3 + 2] = b * 255.0f; // (b > 0.5f) ? 255.0f : b * 255.0f;
|
|
||||||
} |
|
||||||
} |
|
||||||
// printf("bruh\n");
|
|
||||||
//
|
|
||||||
// svpng(fp, result.width, result.height, pixels, 0);
|
|
||||||
stbi_write_png("./sdf.png", result.width, result.height, 3, pixels, 3*result.width); |
|
||||||
// fclose(fp);
|
|
||||||
|
|
||||||
// apply sdf
|
|
||||||
//
|
|
||||||
// FILE* finalImage = fopen(SAMPLE_ROOT "/final.png", "wb");
|
|
||||||
//
|
|
||||||
// uint8_t* rgbaFinal = malloc(sizeof(uint8_t) * result.width * result.height * 4);
|
|
||||||
//
|
|
||||||
// for (int y = 0; y < result.height; y++) {
|
|
||||||
// uint8_t* pixelRow = pixels + (y * result.width * 3);
|
|
||||||
// uint8_t* rgbaFinalRow = rgbaFinal + (y * result.width * 4);
|
|
||||||
// for (int x = 0; x < result.width; x++) {
|
|
||||||
// float r = ((float)pixelRow[x * 3 + 0]) / 255.0f;// = r * 255.0f; // (r > 0.5f) ? 255.0f : r * 255.0f;
|
|
||||||
// float g = ((float)pixelRow[x * 3 + 1]) / 255.0f;// = g * 255.0f; // (g > 0.5f) ? 255.0f : g * 255.0f;
|
|
||||||
// float b = ((float)pixelRow[x * 3 + 2]) / 255.0f;// = b * 255.0f; // (b > 0.5f) ? 255.0f : b * 255.0f;
|
|
||||||
// float dist = g_median(r, g, b);
|
|
||||||
// float opacity = g_clamp(dist - 0.5f, 0, 1) * 2.0f;
|
|
||||||
// rgbaFinalRow[x * 4 + 0] = 0;//255.0f;
|
|
||||||
// rgbaFinalRow[x * 4 + 1] = 0;//255.0f;
|
|
||||||
// rgbaFinalRow[x * 4 + 2] = 0;//255.0f;
|
|
||||||
// rgbaFinalRow[x * 4 + 3] = opacity * 255.0f;
|
|
||||||
//
|
|
||||||
// }
|
|
||||||
// }
|
|
||||||
// svpng(finalImage, result.width, result.height, rgbaFinal, 1);
|
|
||||||
// fclose(finalImage);
|
|
||||||
return 0; |
|
||||||
} |
|
||||||
|
Before Width: | Height: | Size: 600 B |
File diff suppressed because it is too large
Load Diff
@ -1,110 +0,0 @@ |
|||||||
/*
|
|
||||||
Copyright (C) 2017 Milo Yip. 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. |
|
||||||
|
|
||||||
* Neither the name of pngout nor the names of its |
|
||||||
contributors may be used to endorse or promote products derived from |
|
||||||
this software without specific prior written permission. |
|
||||||
|
|
||||||
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. |
|
||||||
*/ |
|
||||||
|
|
||||||
/*! \file
|
|
||||||
\brief svpng() is a minimalistic C function for saving RGB/RGBA image into uncompressed PNG. |
|
||||||
\author Milo Yip |
|
||||||
\version 0.1.1 |
|
||||||
\copyright MIT license |
|
||||||
\sa http://github.com/miloyip/svpng
|
|
||||||
*/ |
|
||||||
|
|
||||||
#ifndef SVPNG_INC_ |
|
||||||
#define SVPNG_INC_ |
|
||||||
|
|
||||||
/*! \def SVPNG_LINKAGE
|
|
||||||
\brief User customizable linkage for svpng() function. |
|
||||||
By default this macro is empty. |
|
||||||
User may define this macro as static for static linkage,
|
|
||||||
and/or inline in C99/C++, etc. |
|
||||||
*/ |
|
||||||
#ifndef SVPNG_LINKAGE |
|
||||||
#define SVPNG_LINKAGE |
|
||||||
#endif |
|
||||||
|
|
||||||
/*! \def SVPNG_OUTPUT
|
|
||||||
\brief User customizable output stream. |
|
||||||
By default, it uses C file descriptor and fputc() to output bytes. |
|
||||||
In C++, for example, user may use std::ostream or std::vector instead. |
|
||||||
*/ |
|
||||||
#ifndef SVPNG_OUTPUT |
|
||||||
#include <stdio.h> |
|
||||||
#define SVPNG_OUTPUT FILE* fp |
|
||||||
#endif |
|
||||||
|
|
||||||
/*! \def SVPNG_PUT
|
|
||||||
\brief Write a byte |
|
||||||
*/ |
|
||||||
#ifndef SVPNG_PUT |
|
||||||
#define SVPNG_PUT(u) fputc(u, fp) |
|
||||||
#endif |
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\brief Save a RGB/RGBA image in PNG format. |
|
||||||
\param SVPNG_OUTPUT Output stream (by default using file descriptor). |
|
||||||
\param w Width of the image. (<16383) |
|
||||||
\param h Height of the image. |
|
||||||
\param img Image pixel data in 24-bit RGB or 32-bit RGBA format. |
|
||||||
\param alpha Whether the image contains alpha channel. |
|
||||||
*/ |
|
||||||
SVPNG_LINKAGE void svpng(SVPNG_OUTPUT, unsigned w, unsigned h, const unsigned char* img, int alpha) { |
|
||||||
static const unsigned t[] = { 0, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
|
|
||||||
/* CRC32 Table */ 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c }; |
|
||||||
unsigned a = 1, b = 0, c, p = w * (alpha ? 4 : 3) + 1, x, y, i; /* ADLER-a, ADLER-b, CRC, pitch */ |
|
||||||
#define SVPNG_U8A(ua, l) for (i = 0; i < l; i++) SVPNG_PUT((ua)[i]); |
|
||||||
#define SVPNG_U32(u) do { SVPNG_PUT((u) >> 24); SVPNG_PUT(((u) >> 16) & 255); SVPNG_PUT(((u) >> 8) & 255); SVPNG_PUT((u) & 255); } while(0) |
|
||||||
#define SVPNG_U8C(u) do { SVPNG_PUT(u); c ^= (u); c = (c >> 4) ^ t[c & 15]; c = (c >> 4) ^ t[c & 15]; } while(0) |
|
||||||
#define SVPNG_U8AC(ua, l) for (i = 0; i < l; i++) SVPNG_U8C((ua)[i]) |
|
||||||
#define SVPNG_U16LC(u) do { SVPNG_U8C((u) & 255); SVPNG_U8C(((u) >> 8) & 255); } while(0) |
|
||||||
#define SVPNG_U32C(u) do { SVPNG_U8C((u) >> 24); SVPNG_U8C(((u) >> 16) & 255); SVPNG_U8C(((u) >> 8) & 255); SVPNG_U8C((u) & 255); } while(0) |
|
||||||
#define SVPNG_U8ADLER(u) do { SVPNG_U8C(u); a = (a + (u)) % 65521; b = (b + a) % 65521; } while(0) |
|
||||||
#define SVPNG_BEGIN(s, l) do { SVPNG_U32(l); c = ~0U; SVPNG_U8AC(s, 4); } while(0) |
|
||||||
#define SVPNG_END() SVPNG_U32(~c) |
|
||||||
SVPNG_U8A("\x89PNG\r\n\32\n", 8); /* Magic */ |
|
||||||
SVPNG_BEGIN("IHDR", 13); /* IHDR chunk { */ |
|
||||||
SVPNG_U32C(w); SVPNG_U32C(h); /* Width & Height (8 bytes) */ |
|
||||||
SVPNG_U8C(8); SVPNG_U8C(alpha ? 6 : 2); /* Depth=8, Color=True color with/without alpha (2 bytes) */ |
|
||||||
SVPNG_U8AC("\0\0\0", 3); /* Compression=Deflate, Filter=No, Interlace=No (3 bytes) */ |
|
||||||
SVPNG_END(); /* } */ |
|
||||||
SVPNG_BEGIN("IDAT", 2 + h * (5 + p) + 4); /* IDAT chunk { */ |
|
||||||
SVPNG_U8AC("\x78\1", 2); /* Deflate block begin (2 bytes) */ |
|
||||||
for (y = 0; y < h; y++) { /* Each horizontal line makes a block for simplicity */ |
|
||||||
SVPNG_U8C(y == h - 1); /* 1 for the last block, 0 for others (1 byte) */ |
|
||||||
SVPNG_U16LC(p); SVPNG_U16LC(~p); /* Size of block in little endian and its 1's complement (4 bytes) */ |
|
||||||
SVPNG_U8ADLER(0); /* No filter prefix (1 byte) */ |
|
||||||
for (x = 0; x < p - 1; x++, img++) |
|
||||||
SVPNG_U8ADLER(*img); /* Image pixel data */ |
|
||||||
} |
|
||||||
SVPNG_U32C((b << 16) | a); /* Deflate block end with adler (4 bytes) */ |
|
||||||
SVPNG_END(); /* } */ |
|
||||||
SVPNG_BEGIN("IEND", 0); SVPNG_END(); /* IEND chunk {} */ |
|
||||||
} |
|
||||||
|
|
||||||
#endif /* SVPNG_INC_ */ |
|
||||||
Binary file not shown.
Loading…
Reference in new issue