--- /dev/null
+/*
+ * Copyright © 2010 Pauli Nieminen
+ *
+ * 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.
+ */
+
+
+/*
+ * Test case for huge cva arrays. Mesa code has to split this to multiple VBOs
+ * which had memory access error.
+ * This test case doesn't render incorrectly but valgrind showed the memory
+ * access error.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#ifdef __VMS
+# include <stddef.h> /* for ptrdiff_t, referenced by GL.h when GL_GLEXT_LEGACY defined */
+#else
+# include <malloc.h> /* for ptrdiff_t, referenced by GL.h when GL_GLEXT_LEGACY defined */
+#endif
+#ifdef _WIN32
+#include <windows.h>
+#endif
+#define GL_GLEXT_LEGACY
+#include <GL/glut.h>
+
+GLfloat *verts;
+
+GLubyte *color;
+
+GLuint *indices;
+
+#define rows 1000 /* Create 1000x1000 vertex grid */
+#define row_width 5000.0
+#define grid_depth -50.0
+GLuint nr_verts_in_row = rows;
+GLuint nr_indices_in_strip = rows * 2;
+
+GLboolean double_buffer;
+GLboolean compiled = GL_TRUE;
+
+static void generate_verts( void )
+{
+ unsigned x, y;
+ GLfloat step = row_width /(GLfloat)(nr_verts_in_row - 1);
+ verts = malloc(sizeof(verts[0]) * 4 * nr_verts_in_row * nr_verts_in_row);
+
+ for (y = 0; y < nr_verts_in_row; ++y) {
+ for (x = 0; x < nr_verts_in_row; ++x) {
+ unsigned idx = 4*(x + y * nr_verts_in_row);
+ verts[idx + 0] = step * x - row_width/2.0;
+ verts[idx + 1] = step * y - row_width/2.0;
+ /* deep enough not to be vissible */
+ verts[idx + 2] = grid_depth;
+ verts[idx + 3] = 0.0;
+ }
+ }
+ glVertexPointer( 3, GL_FLOAT, sizeof(verts[0])*4, verts );
+}
+
+static void generate_colors( void )
+{
+ unsigned x, y;
+ GLfloat step = 255.0/(GLfloat)(nr_verts_in_row - 1);
+ color = malloc(sizeof(color[0]) * 4 * nr_verts_in_row * nr_verts_in_row);
+
+ for (y = 0; y < nr_verts_in_row; ++y) {
+ for (x = 0; x < nr_verts_in_row; ++x) {
+ unsigned idx = 4*(x + y * nr_verts_in_row);
+ color[idx + 0] = (GLubyte)(step * x);
+ color[idx + 1] = 0x00;
+ color[idx + 2] = (GLubyte)(step * y);
+ color[idx + 3] = 0x00;
+ }
+ }
+ glColorPointer( 4, GL_UNSIGNED_BYTE, 0, color );
+}
+
+static void generate_indices( void )
+{
+ unsigned strip, i;
+
+ /* indice size * number of strips * number of indices in strip */
+ indices = malloc(sizeof(indices[0]) * (nr_verts_in_row - 1) *
+ (nr_indices_in_strip));
+
+ for (strip = 0; strip < nr_verts_in_row - 1; strip += 2) {
+ for (i = 0; i < nr_indices_in_strip; i+=2) {
+ unsigned idx = i + strip * nr_indices_in_strip;
+ unsigned idx2 = (nr_indices_in_strip - i - 2) + (strip +
+ 1) * (nr_indices_in_strip);
+ indices[idx + 1] = i/2 + strip*nr_verts_in_row;
+ indices[idx] = i/2 + (strip + 1)*nr_verts_in_row;
+ if (strip + 1 < nr_verts_in_row - 1) {
+ indices[idx2] = i/2 + (strip + 1)*nr_verts_in_row;
+ indices[idx2 + 1] = i/2 + (strip + 2)*nr_verts_in_row;
+ }
+ }
+ }
+}
+
+static void init( void )
+{
+
+
+ generate_verts();
+ generate_colors();
+ generate_indices();
+
+ glClearColor( 0.0, 0.0, 0.0, 0.0 );
+ glShadeModel( GL_SMOOTH );
+
+ glEnableClientState( GL_VERTEX_ARRAY );
+ glEnableClientState( GL_COLOR_ARRAY );
+
+ glMatrixMode( GL_PROJECTION );
+ glLoadIdentity();
+ glFrustum( -100.0, 100.0, -100.0, 100.0, 1.0, 100.0 );
+ glMatrixMode( GL_MODELVIEW );
+ glLoadIdentity();
+
+#ifdef GL_EXT_compiled_vertex_array
+ if ( compiled ) {
+ glLockArraysEXT( 0, rows * rows );
+ }
+#endif
+}
+
+static void display( void )
+{
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ glDrawElements( GL_TRIANGLE_STRIP, nr_indices_in_strip * (nr_verts_in_row - 1) , GL_UNSIGNED_INT, indices );
+
+ if ( double_buffer )
+ glutSwapBuffers();
+ else
+ glFlush();
+}
+
+static void keyboard( unsigned char key, int x, int y )
+{
+ switch ( key ) {
+ case 27:
+ exit( 0 );
+ break;
+ }
+
+ glutPostRedisplay();
+}
+
+static GLboolean args( int argc, char **argv )
+{
+ GLint i;
+
+ double_buffer = GL_TRUE;
+
+ for ( i = 1 ; i < argc ; i++ ) {
+ if ( strcmp( argv[i], "-sb" ) == 0 ) {
+ double_buffer = GL_FALSE;
+ } else if ( strcmp( argv[i], "-db" ) == 0 ) {
+ double_buffer = GL_TRUE;
+ } else {
+ fprintf( stderr, "%s (Bad option).\n", argv[i] );
+ return GL_FALSE;
+ }
+ }
+ return GL_TRUE;
+}
+
+int main( int argc, char **argv )
+{
+ GLenum type;
+ char *string;
+ double version;
+
+ glutInit( &argc, argv );
+
+ if ( args( argc, argv ) == GL_FALSE ) {
+ exit( 1 );
+ }
+
+ type = GLUT_RGB | GLUT_DEPTH;
+ type |= ( double_buffer ) ? GLUT_DOUBLE : GLUT_SINGLE;
+
+ glutInitDisplayMode( type );
+ glutInitWindowSize( 250, 250 );
+ glutInitWindowPosition( 100, 100 );
+ glutCreateWindow( "CVA Test" );
+
+ /* Make sure the server supports GL 1.2 vertex arrays.
+ */
+ string = (char *) glGetString( GL_VERSION );
+
+ version = atof(string);
+ if ( version < 1.2 ) {
+ fprintf( stderr, "This program requires OpenGL 1.2 vertex arrays.\n" );
+ exit( -1 );
+ }
+
+ /* See if the server supports compiled vertex arrays.
+ */
+ string = (char *) glGetString( GL_EXTENSIONS );
+
+ if ( !strstr( string, "GL_EXT_compiled_vertex_array" ) ) {
+ fprintf( stderr, "Compiled vertex arrays not supported by this renderer.\n" );
+ compiled = GL_FALSE;
+ }
+
+ init();
+
+ glutDisplayFunc( display );
+ glutKeyboardFunc( keyboard );
+ glutMainLoop();
+
+ return 0;
+}
projects / mesa.git / commitdiff