1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/*
* Copyright (c) 2010 VMware, Inc.
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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
* NON-INFRINGEMENT. IN NO EVENT SHALL VMWARE AND/OR THEIR SUPPLIERS
* 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
* Tests GL_ARB_draw_instanced
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.window_width = 500;
config.window_height = 500;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_ALPHA | PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
static const char *TestName = "draw-instanced";
static GLint PosUniform, ColorUniform;
#define PRIMS 8
static const char *VertShaderText =
"#extension GL_ARB_draw_instanced: enable \n"
"uniform vec2 Pos[8]; \n"
"uniform vec4 Color[8]; \n"
"void main() \n"
"{ \n"
#if 0
" vec4 p = ftransform(); \n"
" vec2 pos = Pos[gl_InstanceIDARB]; \n"
" p.x += pos.x; \n"
" p.y += pos.y; \n"
" gl_Position = p; \n"
#else
" vec4 p = gl_Vertex; \n"
" vec2 pos = Pos[gl_InstanceIDARB]; \n"
" p.x += pos.x; \n"
" p.y += pos.y; \n"
" gl_Position = gl_ModelViewProjectionMatrix * p; \n"
#endif
" gl_FrontColor = Color[gl_InstanceIDARB]; \n"
"} \n";
static const char *FragShaderText =
"void main() \n"
"{ \n"
" gl_FragColor = gl_Color; \n"
"} \n";
static GLuint VertShader, FragShader, Program;
static const GLfloat Positions[PRIMS][2] = {
{ -6, 6 },
{ -4, 4 },
{ -2, 2 },
{ 0, 0 },
{ 2, -2 },
{ 4, -4 },
{ 6, -6 },
{ 8, -8 }
};
static const GLfloat Colors[PRIMS][4] = {
{1, 0, 0, 1},
{0, 1, 0, 1},
{0, 0, 1, 1},
{1, 1, 0, 1},
{0, 1, 1, 1},
{1, 0, 1, 1},
{1, 1, 1, 1},
{0.5, 0.5, 0.5, 1},
};
static GLboolean
test_instancing(void)
{
static const GLfloat verts[4][2] = {
{-1, -1}, {1, -1}, {1, 1}, {-1, 1}
};
glVertexPointer(2, GL_FLOAT, 0, verts);
glEnableClientState(GL_VERTEX_ARRAY);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(Program);
glDrawArraysInstancedARB(GL_POLYGON, 0, 4, PRIMS);
glUseProgram(0);
{
GLint i;
GLint pos[4];
for (i = 0; i < PRIMS; i++) {
/* use glRasterPos to determine where to read a sample pixel */
glRasterPos2fv(Positions[i]);
glGetIntegerv(GL_CURRENT_RASTER_POSITION, pos);
if (!piglit_probe_pixel_rgba(pos[0], pos[1], Colors[i])) {
fprintf(stderr, "%s: instance %d failed to draw correctly\n",
TestName, i);
piglit_present_results();
return GL_FALSE;
}
}
}
piglit_present_results();
return GL_TRUE;
}
enum piglit_result
piglit_display(void)
{
if (!test_instancing())
return PIGLIT_FAIL;
return PIGLIT_PASS;
}
void
piglit_init(int argc, char **argv)
{
piglit_require_extension("GL_ARB_draw_instanced");
VertShader = piglit_compile_shader_text(GL_VERTEX_SHADER, VertShaderText);
assert(VertShader);
FragShader = piglit_compile_shader_text(GL_FRAGMENT_SHADER, FragShaderText);
assert(FragShader);
Program = piglit_link_simple_program(VertShader, FragShader);
glUseProgram(Program);
PosUniform = glGetUniformLocation(Program, "Pos");
ColorUniform = glGetUniformLocation(Program, "Color");
glUniform2fv(PosUniform, PRIMS, (GLfloat *) Positions);
glUniform4fv(ColorUniform, PRIMS, (GLfloat *) Colors);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-5, 5, -5, 5, 10, 20);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0, 0, -11.0);
glScalef(0.5, 0.5, 1.0);
}
|
