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/*
* Copyright © 2015 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/**
* \file drawid.c
*
* Basic test for gl_DrawIDARB.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 31;
config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static const char vs_template[] =
"#version 330\n"
"#extension GL_ARB_shader_draw_parameters: require\n"
"\n"
"/* This is floating point so we can use immediate mode */\n"
"layout(location = 0) in vec2 pos;\n"
"layout(location = 1) in ivec2 ref;\n"
"out vec4 color;\n"
"\n"
"void main()\n"
"{\n"
" gl_Position = vec4(pos, 0.0, 1.0);\n"
" if (%s)\n"
" color = vec4(0, 1, 0, 1);\n"
" else\n"
" color = vec4(1, 0, 0, 1);\n"
"}\n";
static const char fs_text[] =
"#version 130\n"
"\n"
"in vec4 color;\n"
"\n"
"void main()\n"
"{\n"
" gl_FragColor = color;\n"
"}\n";
void
piglit_init(int argc, char **argv)
{
GLuint prog;
char *vs_text;
if (strcmp(argv[1], "drawid") == 0) {
(void)!asprintf(&vs_text, vs_template,
"ref.x == gl_DrawIDARB");
} else if (strcmp(argv[1], "vertexid") == 0) {
(void)!asprintf(&vs_text, vs_template,
"ref.x == gl_DrawIDARB && ref.y == gl_VertexID");
} else {
printf("Unknown subtest: %s\n", argv[1]);
piglit_report_result(PIGLIT_FAIL);
}
piglit_require_GLSL_version(330);
piglit_require_extension("GL_ARB_shader_draw_parameters");
piglit_require_extension("GL_ARB_base_instance");
prog = piglit_build_simple_program(vs_text, fs_text);
glUseProgram(prog);
}
enum piglit_result
piglit_display()
{
bool pass;
struct {
float vertex_array[16];
int reference_array[16];
int indices[6];
} geometry = {
.vertex_array = {
-1, -1,
0, -1,
0, 1,
-1, 1,
0, -1,
1, -1,
1, 1,
0, 1,
},
.reference_array = {
0, 0,
0, 1,
0, 2,
0, 3,
1, 4,
1, 5,
1, 6,
1, 7,
}
};
const int indices[12] = {
0, 1, 2,
0, 2, 3,
4, 5, 6,
4, 6, 7,
};
float green[] = {0, 1, 0, 1};
GLuint vao, vbo;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(geometry), &geometry, GL_STATIC_DRAW);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE,
2 * sizeof(GLfloat),
(void *) ((char *) &geometry.vertex_array - (char *) &geometry));
glVertexAttribIPointer(1, 2, GL_UNSIGNED_INT,
2 * sizeof(int),
(void *) ((char *) &geometry.reference_array - (char *) &geometry));
/* Enable the attributes */
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
GLsizei counts[2] = { 6, 6 };
const int *indices_array[2] = { &indices[0], &indices[6] };
glMultiDrawElements(GL_TRIANGLES,
counts,
GL_UNSIGNED_INT,
(const void **) indices_array,
2);
pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
green);
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
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