1 /*-------------------------------------------------------------------------
2 * OpenGL Conformance Test Suite
3 * -----------------------------
4 *
5 * Copyright (c) 2014-2016 The Khronos Group Inc.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 */ /*!
20 * \file
21 * \brief
22 */ /*-------------------------------------------------------------------*/
23
24 #include "esextcGeometryShaderClipping.hpp"
25
26 #include "gluDefs.hpp"
27 #include "glwEnums.hpp"
28 #include "glwFunctions.hpp"
29 #include "tcuTestLog.hpp"
30 #include <cstring>
31
32 namespace glcts
33 {
34 /* Fragment shader code */
35 const char *GeometryShaderClipping::m_fs_code = "${VERSION}\n"
36 "\n"
37 "precision highp float;\n"
38 "\n"
39 "out vec4 result;\n"
40 "\n"
41 "void main()\n"
42 "{\n"
43 " result = vec4(0, 1, 0, 0);\n"
44 "}\n";
45
46 /* Vertex shader code */
47 const char *GeometryShaderClipping::m_vs_code = "${VERSION}\n"
48 "\n"
49 "precision highp float;\n"
50 "\n"
51 "void main()\n"
52 "{\n"
53 " gl_Position = vec4(-10, -10, -10, 0);\n"
54 "}\n";
55
56 /* Geometry shader code */
57 const char *GeometryShaderClipping::m_gs_code = "${VERSION}\n"
58 "${GEOMETRY_SHADER_REQUIRE}\n"
59 "\n"
60 "precision highp float;\n"
61 "\n"
62 "layout(points) in;\n"
63 "layout(triangle_strip, max_vertices=4) out;\n"
64 "\n"
65 "void main()\n"
66 "{\n"
67 "\n"
68 " gl_Position = vec4(1, 1, 0, 1);\n"
69 " EmitVertex();\n"
70 "\n"
71 " gl_Position = vec4(1, -1, 0, 1);\n"
72 " EmitVertex();\n"
73 "\n"
74 " gl_Position = vec4(-1, 1, 0, 1);\n"
75 " EmitVertex();\n"
76 "\n"
77 " gl_Position = vec4(-1, -1, 0, 1);\n"
78 " EmitVertex();\n"
79 "\n"
80 " EndPrimitive();\n"
81 "}\n";
82
83 /** Constructor
84 *
85 * @param context Test context
86 * @param name Test case's name
87 * @param description Test case's desricption
88 **/
GeometryShaderClipping(Context & context,const ExtParameters & extParams,const char * name,const char * description)89 GeometryShaderClipping::GeometryShaderClipping(Context &context, const ExtParameters &extParams, const char *name,
90 const char *description)
91 : TestCaseBase(context, extParams, name, description)
92 , m_fbo_id(0)
93 , m_fs_id(0)
94 , m_gs_id(0)
95 , m_po_id(0)
96 , m_to_id(0)
97 , m_vao_id(0)
98 , m_vs_id(0)
99 {
100 }
101
102 /** Deinitializes GLES objects created during the test.
103 *
104 */
deinit(void)105 void GeometryShaderClipping::deinit(void)
106 {
107 const glw::Functions &gl = m_context.getRenderContext().getFunctions();
108
109 /* Reset OpenGL ES state */
110 gl.useProgram(0);
111 gl.bindTexture(GL_TEXTURE_2D, 0);
112 gl.bindFramebuffer(GL_FRAMEBUFFER, 0);
113 gl.bindVertexArray(0);
114
115 if (m_po_id != 0)
116 {
117 gl.deleteProgram(m_po_id);
118 }
119
120 if (m_fs_id != 0)
121 {
122 gl.deleteShader(m_fs_id);
123 }
124
125 if (m_gs_id != 0)
126 {
127 gl.deleteShader(m_gs_id);
128 }
129
130 if (m_vs_id != 0)
131 {
132 gl.deleteShader(m_vs_id);
133 }
134
135 if (m_to_id != 0)
136 {
137 gl.deleteTextures(1, &m_to_id);
138 }
139
140 if (m_fbo_id != 0)
141 {
142 gl.deleteFramebuffers(1, &m_fbo_id);
143 }
144
145 if (m_vao_id != 0)
146 {
147 gl.deleteVertexArrays(1, &m_vao_id);
148 }
149
150 /* Release base class */
151 TestCaseBase::deinit();
152 }
153
154 /** Executes the test.
155 * Sets the test result to QP_TEST_RESULT_FAIL if the test failed, QP_TEST_RESULT_PASS otherwise.
156 * @return STOP if the test has finished, CONTINUE to indicate iterate should be called once again.
157 * Note the function throws exception should an error occur!
158 **/
iterate(void)159 tcu::TestNode::IterateResult GeometryShaderClipping::iterate(void)
160 {
161 unsigned char buffer[m_texture_width * m_texture_height * m_texture_n_components];
162
163 const glw::Functions &gl = m_context.getRenderContext().getFunctions();
164 const unsigned char reference_color[] = {0, 255, 0, 0};
165 const unsigned int row_size = m_texture_width * m_texture_n_components;
166
167 if (!m_is_geometry_shader_extension_supported)
168 {
169 throw tcu::NotSupportedError(GEOMETRY_SHADER_EXTENSION_NOT_SUPPORTED, "", __FILE__, __LINE__);
170 }
171
172 /* Create shader objects we'll need */
173 m_fs_id = gl.createShader(GL_FRAGMENT_SHADER);
174 m_gs_id = gl.createShader(m_glExtTokens.GEOMETRY_SHADER);
175 m_vs_id = gl.createShader(GL_VERTEX_SHADER);
176 m_po_id = gl.createProgram();
177
178 if (!buildProgram(m_po_id, m_fs_id, 1 /* part */, &m_fs_code, m_gs_id, 1 /* part */, &m_gs_code, m_vs_id,
179 1 /* part */, &m_vs_code))
180 {
181 TCU_FAIL("Could not create program object from valid vertex/geometry/fragment shaders!");
182 }
183
184 /* Create and configure texture object we'll be rendering to */
185 gl.genTextures(1, &m_to_id);
186 gl.bindTexture(GL_TEXTURE_2D, m_to_id);
187 gl.texStorage2D(GL_TEXTURE_2D, m_texture_n_levels, GL_RGBA8, m_texture_width, m_texture_height);
188
189 GLU_EXPECT_NO_ERROR(gl.getError(), "Error creating texture object!");
190
191 /* Create and configure the framebuffer object */
192 gl.genFramebuffers(1, &m_fbo_id);
193 gl.bindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbo_id);
194 gl.framebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_to_id, 0 /* level */);
195
196 GLU_EXPECT_NO_ERROR(gl.getError(), "Error configuring framebuffer object!");
197
198 /* Create and bind vertex array object */
199 gl.genVertexArrays(1, &m_vao_id);
200 gl.bindVertexArray(m_vao_id);
201
202 GLU_EXPECT_NO_ERROR(gl.getError(), "Error configuring vertex array object");
203
204 /* Render */
205 gl.viewport(0 /* x */, 0 /* y */, m_texture_width /* width */, m_texture_height /* height */);
206 gl.useProgram(m_po_id);
207
208 gl.clearColor(1.0f, 0.0f, 0.0f, 0.0f);
209 gl.clear(GL_COLOR_BUFFER_BIT);
210
211 gl.drawArrays(GL_POINTS, 0 /* first */, 1 /* count */);
212
213 GLU_EXPECT_NO_ERROR(gl.getError(), "Rendering failed!");
214
215 /* Read the rendered data */
216 gl.bindFramebuffer(GL_READ_FRAMEBUFFER, m_fbo_id);
217 gl.readPixels(0 /* x */, 0 /* y */, m_texture_height /* width */, m_texture_width /* height */, GL_RGBA,
218 GL_UNSIGNED_BYTE, buffer);
219
220 GLU_EXPECT_NO_ERROR(gl.getError(), "Reading pixels failed!");
221
222 /* Loop over all pixels and compare the rendered data with reference value */
223 for (int y = 0; y < m_texture_height; ++y)
224 {
225 unsigned char *data_row = buffer + y * row_size;
226
227 for (int x = 0; x < m_texture_width; ++x)
228 {
229 unsigned char *data = data_row + x * m_texture_n_components;
230
231 if (memcmp(data, reference_color, sizeof(reference_color)) != 0)
232 {
233 m_testCtx.getLog() << tcu::TestLog::Message << "Rendered data [" << data[0] << ", " << data[1] << ", "
234 << data[2] << ", " << data[3] << "] is different from reference data ["
235 << reference_color[0] << ", " << reference_color[1] << ", " << reference_color[2]
236 << ", " << reference_color[3] << "] !" << tcu::TestLog::EndMessage;
237
238 m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail");
239
240 return STOP;
241 } /* if (memcmp(data, reference_color, sizeof(reference_color)) != 0) */
242 } /* for (all columns) */
243 } /* for (all rows) */
244
245 m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
246 return STOP;
247 }
248
249 } // namespace glcts
250