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tests: Add test for huge client arrays that has to be split.
When running this test case in valgrind report includes read of unitialized value in _tnl_draw_prims. The bug doesn't cause any vissible errors. Bug is caused by vbo_split_copy that is calling draw function with max_index one past the end instead of the end.
This commit is contained in:
Pauli Nieminen
parent
3d72c4ae78
commit
a81cd67a4f
2 changed files with 237 additions and 0 deletions
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@ -41,6 +41,7 @@ SOURCES = \
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copypixrate.c \
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crossbar.c \
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cva.c \
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cva_huge.c \
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cylwrap.c \
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drawbuffers.c \
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drawbuffers2.c \
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236
progs/tests/cva_huge.c
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236
progs/tests/cva_huge.c
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@ -0,0 +1,236 @@
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/*
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* Copyright © 2010 Pauli Nieminen
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Test case for huge cva arrays. Mesa code has to split this to multiple VBOs
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* which had memory access error.
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* This test case doesn't render incorrectly but valgrind showed the memory
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* access error.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef __VMS
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# include <stddef.h> /* for ptrdiff_t, referenced by GL.h when GL_GLEXT_LEGACY defined */
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#else
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# include <malloc.h> /* for ptrdiff_t, referenced by GL.h when GL_GLEXT_LEGACY defined */
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#endif
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#define GL_GLEXT_LEGACY
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#include <GL/glut.h>
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GLfloat *verts;
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GLubyte *color;
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GLuint *indices;
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#define rows 1000 /* Create 1000x1000 vertex grid */
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#define row_width 5000.0
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#define grid_depth -50.0
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GLuint nr_verts_in_row = rows;
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GLuint nr_indices_in_strip = rows * 2;
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GLboolean double_buffer;
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GLboolean compiled = GL_TRUE;
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static void generate_verts( void )
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{
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unsigned x, y;
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GLfloat step = row_width /(GLfloat)(nr_verts_in_row - 1);
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verts = malloc(sizeof(verts[0]) * 4 * nr_verts_in_row * nr_verts_in_row);
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for (y = 0; y < nr_verts_in_row; ++y) {
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for (x = 0; x < nr_verts_in_row; ++x) {
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unsigned idx = 4*(x + y * nr_verts_in_row);
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verts[idx + 0] = step * x - row_width/2.0;
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verts[idx + 1] = step * y - row_width/2.0;
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/* deep enough not to be vissible */
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verts[idx + 2] = grid_depth;
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verts[idx + 3] = 0.0;
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}
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}
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glVertexPointer( 3, GL_FLOAT, sizeof(verts[0])*4, verts );
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}
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static void generate_colors( void )
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{
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unsigned x, y;
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GLfloat step = 255.0/(GLfloat)(nr_verts_in_row - 1);
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color = malloc(sizeof(color[0]) * 4 * nr_verts_in_row * nr_verts_in_row);
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for (y = 0; y < nr_verts_in_row; ++y) {
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for (x = 0; x < nr_verts_in_row; ++x) {
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unsigned idx = 4*(x + y * nr_verts_in_row);
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color[idx + 0] = (GLubyte)(step * x);
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color[idx + 1] = 0x00;
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color[idx + 2] = (GLubyte)(step * y);
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color[idx + 3] = 0x00;
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}
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}
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glColorPointer( 4, GL_UNSIGNED_BYTE, 0, color );
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}
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static void generate_indices( void )
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{
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unsigned strip, i;
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/* indice size * number of strips * number of indices in strip */
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indices = malloc(sizeof(indices[0]) * (nr_verts_in_row - 1) *
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(nr_indices_in_strip));
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for (strip = 0; strip < nr_verts_in_row - 1; strip += 2) {
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for (i = 0; i < nr_indices_in_strip; i+=2) {
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unsigned idx = i + strip * nr_indices_in_strip;
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unsigned idx2 = (nr_indices_in_strip - i - 2) + (strip +
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1) * (nr_indices_in_strip);
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indices[idx + 1] = i/2 + strip*nr_verts_in_row;
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indices[idx] = i/2 + (strip + 1)*nr_verts_in_row;
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if (strip + 1 < nr_verts_in_row - 1) {
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indices[idx2] = i/2 + (strip + 1)*nr_verts_in_row;
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indices[idx2 + 1] = i/2 + (strip + 2)*nr_verts_in_row;
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}
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}
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}
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}
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static void init( void )
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{
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generate_verts();
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generate_colors();
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generate_indices();
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glClearColor( 0.0, 0.0, 0.0, 0.0 );
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glShadeModel( GL_SMOOTH );
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glEnableClientState( GL_VERTEX_ARRAY );
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glEnableClientState( GL_COLOR_ARRAY );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glFrustum( -100.0, 100.0, -100.0, 100.0, 1.0, 100.0 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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#ifdef GL_EXT_compiled_vertex_array
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if ( compiled ) {
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glLockArraysEXT( 0, rows * rows );
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}
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#endif
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}
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static void display( void )
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{
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glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
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glDrawElements( GL_TRIANGLE_STRIP, nr_indices_in_strip * (nr_verts_in_row - 1) , GL_UNSIGNED_INT, indices );
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if ( double_buffer )
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glutSwapBuffers();
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else
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glFlush();
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}
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static void keyboard( unsigned char key, int x, int y )
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{
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switch ( key ) {
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case 27:
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exit( 0 );
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break;
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}
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glutPostRedisplay();
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}
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static GLboolean args( int argc, char **argv )
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{
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GLint i;
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double_buffer = GL_TRUE;
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for ( i = 1 ; i < argc ; i++ ) {
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if ( strcmp( argv[i], "-sb" ) == 0 ) {
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double_buffer = GL_FALSE;
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} else if ( strcmp( argv[i], "-db" ) == 0 ) {
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double_buffer = GL_TRUE;
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} else {
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fprintf( stderr, "%s (Bad option).\n", argv[i] );
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return GL_FALSE;
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}
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}
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return GL_TRUE;
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}
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int main( int argc, char **argv )
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{
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GLenum type;
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char *string;
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double version;
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glutInit( &argc, argv );
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if ( args( argc, argv ) == GL_FALSE ) {
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exit( 1 );
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}
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type = GLUT_RGB | GLUT_DEPTH;
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type |= ( double_buffer ) ? GLUT_DOUBLE : GLUT_SINGLE;
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glutInitDisplayMode( type );
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glutInitWindowSize( 250, 250 );
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glutInitWindowPosition( 100, 100 );
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glutCreateWindow( "CVA Test" );
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/* Make sure the server supports GL 1.2 vertex arrays.
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*/
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string = (char *) glGetString( GL_VERSION );
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version = atof(string);
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if ( version < 1.2 ) {
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fprintf( stderr, "This program requires OpenGL 1.2 vertex arrays.\n" );
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exit( -1 );
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}
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/* See if the server supports compiled vertex arrays.
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*/
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string = (char *) glGetString( GL_EXTENSIONS );
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if ( !strstr( string, "GL_EXT_compiled_vertex_array" ) ) {
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fprintf( stderr, "Compiled vertex arrays not supported by this renderer.\n" );
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compiled = GL_FALSE;
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}
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init();
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glutDisplayFunc( display );
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glutKeyboardFunc( keyboard );
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glutMainLoop();
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return 0;
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}
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