GCC Code Coverage Report

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2000-2022 Inria
3			* All rights reserved.
4			*
5			* Redistribution and use in source and binary forms, with or without
6			* modification, are permitted provided that the following conditions are met:
7			*
8			* * Redistributions of source code must retain the above copyright notice,
9			* this list of conditions and the following disclaimer.
10			* * Redistributions in binary form must reproduce the above copyright notice,
11			* this list of conditions and the following disclaimer in the documentation
12			* and/or other materials provided with the distribution.
13			* * Neither the name of the ALICE Project-Team nor the names of its
14			* contributors may be used to endorse or promote products derived from this
15			* software without specific prior written permission.
16			*
17			* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18			* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20			* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
21			* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22			* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23			* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24			* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25			* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27			* POSSIBILITY OF SUCH DAMAGE.
28			*
29			* Contact: Bruno Levy
30			*
31			* https://www.inria.fr/fr/bruno-levy
32			*
33			* Inria,
34			* Domaine de Voluceau,
35			* 78150 Le Chesnay - Rocquencourt
36			* FRANCE
37			*
38			*/
39
40
41			#include <geogram_gfx/full_screen_effects/unsharp_masking.h>
42			#include <geogram_gfx/basic/GLSL.h>
43			#include <geogram/basic/logger.h>
44			#include <geogram/bibliography/bibliography.h>
45
46			// Requirements for Android compile are the same
47			// as for Emscripten.
48			// TODO: something cleaner.
49			#ifdef GEO_OS_ANDROID
50			#define GEO_OS_EMSCRIPTEN
51			#endif
52
53			namespace GEO {
54
55		✗	UnsharpMaskingImpl::UnsharpMaskingImpl() {
56		✗	unsharp_masking_program_ = 0;
57		✗	blur_program_ = 0;
58		✗	positive_shadows_ = true;
59		✗	contrast_ = 50;
60		✗	intensity_ = 50;
61		✗	halos_ = true;
62		✗	blur_width_ = 1;
63		✗	geo_cite("DBLP:journals/tog/LuftCD06");
64		✗	}
65
66		✗	UnsharpMaskingImpl::~UnsharpMaskingImpl() {
67		✗	if (unsharp_masking_program_ != 0) {
68		✗	glDeleteProgram(unsharp_masking_program_);
69			}
70		✗	if (blur_program_ != 0) {
71		✗	glDeleteProgram(blur_program_);
72			}
73		✗	}
74
75		✗	double UnsharpMaskingImpl::required_GLSL_version() const {
76			#ifdef GEO_OS_EMSCRIPTEN
77			return 1.0;
78			#else
79		✗	return 1.3;
80			#endif
81			}
82
83		✗	void UnsharpMaskingImpl::initialize(index_t w, index_t h) {
84		✗	FullScreenEffectImpl::initialize(w,h);
85		✗	if(!OK()) {
86			return;
87			}
88
89			#if defined(GEO_OS_EMSCRIPTEN) || defined(GEO_OS_ANDROID)
90			// GL_R16F gives a different result (stripes) on Emscripten
91			// Note: does not work on Android for now.
92			# if defined(GEO_OS_EMSCRIPTEN) && !defined(GEO_WEBGL2)
93			const GLint internal_format = GL_RGBA;
94			# else
95			const GLint internal_format = GL_R32F;
96			# endif
97			#else
98			// Note: I do not know what GL_R16 corresponds to internally,
99			// it is different from GL_R16F and GL_R16I and GL_R16UI
100			// (different behavior when I use them).
101			const GLint internal_format = GL_R16;
102			#endif
103
104		✗	if(!blur_1_.initialize(
105			width(), height(), false, internal_format
106			)
107			) {
108		✗	Logger::err("UnsharpM")
109			<< "blur_1_ FBO is not initialized" << std::endl;
110			}
111		✗	if(!blur_2_.initialize(
112			width(), height(), false, internal_format
113			)
114			) {
115		✗	Logger::err("UnsharpM")
116			<< "blur_2_ FBO is not initialized" << std::endl;
117			}
118
119			// Shader sources are embedded in source code,
120			// Initial sourcecode is in:
121			// geogram_gfx/GLUP/shaders/fullscreen
122		✗	unsharp_masking_program_ = GLSL::compile_program_with_includes_no_link(
123			this,
124			"//stage GL_VERTEX_SHADER\n"
125			"//import <fullscreen/vertex_shader.h>\n",
126			"//stage GL_FRAGMENT_SHADER\n"
127			"//import <fullscreen/unsharp_masking_fragment_shader.h>\n"
128			);
129
130
131		✗	glBindAttribLocation(unsharp_masking_program_, 0, "vertex_in");
132		✗	glBindAttribLocation(unsharp_masking_program_, 1, "tex_coord_in");
133
134		✗	GLSL::link_program(unsharp_masking_program_);
135
136		✗	GLSL::set_program_uniform_by_name(
137			unsharp_masking_program_, "blur_texture", 0
138			);
139		✗	GLSL::set_program_uniform_by_name(
140			unsharp_masking_program_, "depth_texture", 1
141			);
142
143			// Shader sources are embedded in source code,
144			// Initial sourcecode is in:
145			// geogram_gfx/GLUP/shaders/fullscreen
146		✗	blur_program_ = GLSL::compile_program_with_includes_no_link(
147			this,
148			"//stage GL_VERTEX_SHADER\n"
149			"//import <fullscreen/vertex_shader.h>\n",
150			"//stage GL_FRAGMENT_SHADER\n"
151			"//import <fullscreen/blur_fragment_shader.h>\n"
152			);
153
154		✗	glBindAttribLocation(blur_program_, 0, "vertex_in");
155		✗	glBindAttribLocation(blur_program_, 1, "tex_coord_in");
156
157		✗	GLSL::link_program(blur_program_);
158
159		✗	GLSL::set_program_uniform_by_name(
160			blur_program_, "source_tex", 0
161			);
162		✗	GLSL::set_program_uniform_by_name(
163			blur_program_, "blur_width", 2.0f
164			);
165		✗	if(ES_profile_) {
166		✗	GLSL::set_program_uniform_by_name(
167			blur_program_, "source_tex_size",
168		✗	float(blur_1_.width), float(blur_1_.height)
169			);
170			}
171		✗	update();
172			}
173
174		✗	void UnsharpMaskingImpl::pre_render(index_t w, index_t h) {
175		✗	FullScreenEffectImpl::pre_render(w,h);
176		✗	}
177
178		✗	void UnsharpMaskingImpl::resize(index_t width, index_t height) {
179		✗	blur_1_.resize(width, height);
180		✗	blur_2_.resize(width, height);
181		✗	if(ES_profile_) {
182		✗	GLSL::set_program_uniform_by_name(
183			blur_program_, "source_tex_size",
184			float(width), float(height)
185			);
186			}
187		✗	FullScreenEffectImpl::resize(width, height);
188		✗	}
189
190		✗	void UnsharpMaskingImpl::blur() {
191		✗	glViewport(0, 0, GLsizei(width()), GLsizei(height()));
192
193			// Horizontal blur: ZBuffer -> blur_2_
194		✗	draw_FBO_.bind_depth_buffer_as_texture();
195		✗	blur_2_.bind_as_framebuffer();
196		✗	GLSL::set_program_uniform_by_name(blur_program_, "vertical", false);
197		✗	glUseProgram(blur_program_);
198		✗	draw_unit_textured_quad();
199		✗	blur_2_.unbind();
200		✗	draw_FBO_.unbind();
201
202			// Vertical blur: blur_2_ -> blur_1_
203		✗	blur_1_.bind_as_framebuffer();
204		✗	blur_2_.bind_as_texture();
205		✗	GLSL::set_program_uniform_by_name(blur_program_, "vertical", true);
206		✗	glUseProgram(blur_program_);
207		✗	draw_unit_textured_quad();
208		✗	blur_1_.unbind();
209		✗	blur_2_.unbind();
210
211		✗	glUseProgram(0);
212		✗	}
213
214		✗	void UnsharpMaskingImpl::display_final_texture() {
215		✗	glBindFramebuffer(GL_FRAMEBUFFER, main_framebuffer_id_);
216
217		✗	glDisable(GL_DEPTH_TEST);
218		✗	glEnable(GL_BLEND);
219		✗	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
220		✗	glViewport(0, 0, GLsizei(width()), GLsizei(height()));
221
222		✗	glUseProgram(unsharp_masking_program_);
223		✗	glActiveTexture(GL_TEXTURE1);
224		✗	draw_FBO_.bind_depth_buffer_as_texture();
225		✗	glActiveTexture(GL_TEXTURE0);
226		✗	blur_1_.bind_as_texture();
227		✗	draw_unit_textured_quad();
228		✗	glUseProgram(0);
229		✗	draw_FBO_.unbind();
230
231		✗	glEnable(GL_DEPTH_TEST);
232		✗	glDisable(GL_BLEND);
233		✗	blur_1_.unbind();
234		✗	}
235
236		✗	void UnsharpMaskingImpl::post_render() {
237			// Copies the content of draw_FBO_ to the screen.
238		✗	FullScreenEffectImpl::post_render();
239
240			// Computes effect and composites effect with
241			// previously rendered image.
242		✗	blur();
243		✗	display_final_texture();
244		✗	reset_alpha();
245		✗	}
246
247		✗	void UnsharpMaskingImpl::update() {
248		✗	if(!OK()) {
249			return;
250			}
251		✗	if(unsharp_masking_program_ != 0) {
252		✗	float fx = 1.0f - float(contrast_)/100.0f;
253			geo_clamp(fx, 0.0f, 1.0f);
254		✗	GLSL::set_program_uniform_by_name(
255			unsharp_masking_program_,
256			"shadows_gamma", fx
257			);
258		✗	GLSL::set_program_uniform_by_name(
259			unsharp_masking_program_,
260		✗	"shadows_intensity", float(intensity_) / 400.0f
261			);
262		✗	GLSL::set_program_uniform_by_name(
263		✗	unsharp_masking_program_, "shadows_halo", halos_
264			);
265		✗	GLSL::set_program_uniform_by_name(
266			unsharp_masking_program_, "do_positive_shadows",
267		✗	positive_shadows_
268			);
269			}
270		✗	if(blur_program_ != 0) {
271		✗	GLSL::set_program_uniform_by_name(
272		✗	blur_program_, "blur_width", float(blur_width_)
273			);
274			}
275			}
276			}
277