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-rw-r--r--vcl/glyphy/demo/demo-shader.cc212
1 files changed, 0 insertions, 212 deletions
diff --git a/vcl/glyphy/demo/demo-shader.cc b/vcl/glyphy/demo/demo-shader.cc
deleted file mode 100644
index 395068d22db4..000000000000
--- a/vcl/glyphy/demo/demo-shader.cc
+++ /dev/null
@@ -1,212 +0,0 @@
-/*
- * Copyright 2012 Google, Inc. All Rights Reserved.
- *
- * 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.
- *
- * Google Author(s): Behdad Esfahbod
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include "demo-shader.h"
-
-#include "demo-atlas-glsl.h"
-#include "demo-vshader-glsl.h"
-#include "demo-fshader-glsl.h"
-
-
-static unsigned int
-glyph_encode (unsigned int atlas_x , /* 7 bits */
- unsigned int atlas_y, /* 7 bits */
- unsigned int corner_x, /* 1 bit */
- unsigned int corner_y, /* 1 bit */
- unsigned int nominal_w, /* 6 bits */
- unsigned int nominal_h /* 6 bits */)
-{
- assert (0 == (atlas_x & ~0x7F));
- assert (0 == (atlas_y & ~0x7F));
- assert (0 == (corner_x & ~1));
- assert (0 == (corner_y & ~1));
- assert (0 == (nominal_w & ~0x3F));
- assert (0 == (nominal_h & ~0x3F));
-
- unsigned int x = (((atlas_x << 6) | nominal_w) << 1) | corner_x;
- unsigned int y = (((atlas_y << 6) | nominal_h) << 1) | corner_y;
-
- return (x << 16) | y;
-}
-
-static void
-glyph_vertex_encode (double x, double y,
- unsigned int corner_x, unsigned int corner_y,
- const glyph_info_t *gi,
- glyph_vertex_t *v)
-{
- unsigned int encoded = glyph_encode (gi->atlas_x, gi->atlas_y,
- corner_x, corner_y,
- gi->nominal_w, gi->nominal_h);
- v->x = x;
- v->y = y;
- v->g16hi = encoded >> 16;
- v->g16lo = encoded & 0xFFFF;
-}
-
-void
-demo_shader_add_glyph_vertices (const glyphy_point_t &p,
- double font_size,
- glyph_info_t *gi,
- std::vector<glyph_vertex_t> *vertices,
- glyphy_extents_t *extents)
-{
- if (gi->is_empty)
- return;
-
- glyph_vertex_t v[4];
-
-#define ENCODE_CORNER(_cx, _cy) \
- do { \
- double _vx = p.x + font_size * ((1-_cx) * gi->extents.min_x + _cx * gi->extents.max_x); \
- double _vy = p.y - font_size * ((1-_cy) * gi->extents.min_y + _cy * gi->extents.max_y); \
- glyph_vertex_encode (_vx, _vy, _cx, _cy, gi, &v[_cx * 2 + _cy]); \
- } while (false)
- ENCODE_CORNER (0, 0);
- ENCODE_CORNER (0, 1);
- ENCODE_CORNER (1, 0);
- ENCODE_CORNER (1, 1);
-#undef ENCODE_CORNER
-
- vertices->push_back (v[0]);
- vertices->push_back (v[1]);
- vertices->push_back (v[2]);
-
- vertices->push_back (v[1]);
- vertices->push_back (v[2]);
- vertices->push_back (v[3]);
-
- if (extents) {
- glyphy_extents_clear (extents);
- for (unsigned int i = 0; i < 4; i++) {
- glyphy_point_t p2 = {v[i].x, v[i].y};
- glyphy_extents_add (extents, &p2);
- }
- }
-}
-
-
-
-
-static GLuint
-compile_shader (GLenum type,
- GLsizei count,
- const GLchar** sources)
-{
- TRACE();
-
- GLuint shader;
- GLint compiled;
-
- if (!(shader = glCreateShader (type)))
- return shader;
-
- glShaderSource (shader, count, sources, nullptr);
- glCompileShader (shader);
-
- glGetShaderiv (shader, GL_COMPILE_STATUS, &compiled);
- if (!compiled) {
- GLint info_len = 0;
- LOGW ("%s shader failed to compile\n",
- type == GL_VERTEX_SHADER ? "Vertex" : "Fragment");
- glGetShaderiv (shader, GL_INFO_LOG_LENGTH, &info_len);
-
- if (info_len > 0) {
- char *info_log = static_cast<char*>(malloc (info_len));
- glGetShaderInfoLog (shader, info_len, nullptr, info_log);
-
- LOGW ("%s\n", info_log);
- free (info_log);
- }
-
- abort ();
- }
-
- return shader;
-}
-
-static GLuint
-link_program (GLuint vshader,
- GLuint fshader)
-{
- TRACE();
-
- GLuint program;
- GLint linked;
-
- program = glCreateProgram ();
- glAttachShader (program, vshader);
- glAttachShader (program, fshader);
- glLinkProgram (program);
- glDeleteShader (vshader);
- glDeleteShader (fshader);
-
- glGetProgramiv (program, GL_LINK_STATUS, &linked);
- if (!linked) {
- GLint info_len = 0;
- LOGW ("Program failed to link\n");
- glGetProgramiv (program, GL_INFO_LOG_LENGTH, &info_len);
-
- if (info_len > 0) {
- char *info_log = static_cast<char*>(malloc (info_len));
- glGetProgramInfoLog (program, info_len, nullptr, info_log);
-
- LOGW ("%s\n", info_log);
- free (info_log);
- }
-
- abort ();
- }
-
- return program;
-}
-
-#ifdef GL_ES_VERSION_2_0
-# define GLSL_HEADER_STRING \
- "#extension GL_OES_standard_derivatives : enable\n" \
- "precision highp float;\n" \
- "precision highp int;\n"
-#else
-# define GLSL_HEADER_STRING \
- "#version 110\n"
-#endif
-
-GLuint
-demo_shader_create_program (void)
-{
- TRACE();
-
- GLuint vshader, fshader, program;
- const GLchar *vshader_sources[] = {GLSL_HEADER_STRING,
- demo_vshader_glsl};
- vshader = compile_shader (GL_VERTEX_SHADER, ARRAY_LEN (vshader_sources), vshader_sources);
- const GLchar *fshader_sources[] = {GLSL_HEADER_STRING,
- demo_atlas_glsl,
- glyphy_common_shader_source (),
- "#define GLYPHY_SDF_PSEUDO_DISTANCE 1\n",
- glyphy_sdf_shader_source (),
- demo_fshader_glsl};
- fshader = compile_shader (GL_FRAGMENT_SHADER, ARRAY_LEN (fshader_sources), fshader_sources);
-
- program = link_program (vshader, fshader);
- return program;
-}
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