Re: corrupt textures on X1600 with 10.5.3?

#include <GL/glut.h>

#include <GL/glext.h>

#include <stdio.h>

int win_wd = 1024;

int win_ht = 512;

static const int prgs = 2;

static GLuint vps[prgs];

static GLuint fps[prgs];

static const char* arbvps[prgs] =

{

"!!ARBvp1.0\n"

"OPTION ARB_position_invariant;\n"

"MOV result.texcoord[0], vertex.texcoord[0];\n"

"END\n",

"!!ARBvp1.0\n"

"OPTION ARB_position_invariant;\n"

"MOV result.texcoord[0], vertex.texcoord[0];\n"

"END\n"

};

static const char* arbfps[prgs] =

{

"!!ARBfp1.0\n"

"TEMP tcoord;\n"

"MOV tcoord, fragment.texcoord[0];\n"

"TEX result.color.x, tcoord, texture[0], 2D;\n"

"ADD tcoord, tcoord, {0.1,0,0,0};\n"

"TEX result.color.y, tcoord, texture[0], 2D;\n"

"ADD tcoord, tcoord, {0,0.1,0,0};\n"

"TEX result.color.z, tcoord, texture[0], 2D;\n"

"ADD tcoord, tcoord, {-0.1,0,0,0};\n"

"TEX result.color.w, tcoord, texture[0], 2D;\n"

"END\n",

"!!ARBfp1.0\n"

"TEMP tcoord;\n"

"MOV tcoord, fragment.texcoord[0];\n"

"ADD tcoord, tcoord, program.local[0];\n"

"TEX result.color, tcoord, texture[0], 2D;\n"

"END\n"

};

void bmpstring (char* str)

{

int len = int(strlen(str));

for (int i = 0; i < len; ++i)

glutBitmapCharacter(GLUT_BITMAP_9_BY_15,str[i]);

}

void CreateTexture ()

{

// Draw a simple quad at Z = 0 (Z range is [-1,1]).

glEnable(GL_DEPTH_TEST);

glDepthFunc(GL_LEQUAL);

glViewport(0,0,512,512);

glMatrixMode(GL_PROJECTION);

glLoadIdentity();

glMatrixMode(GL_MODELVIEW);

glLoadIdentity();

glClearDepth(1);

glClearColor(0,0,0,1);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glBegin(GL_QUADS);

glVertex3f(-0.5f,-0.5f,0);

glVertex3f( 0.5f,-0.5f,0);

glVertex3f( 0.5f, 0.5f,0);

glVertex3f(-0.5f, 0.5f,0);

glEnd();

GLuint dummy;

glGenTextures(1,&dummy);

glBindTexture(GL_TEXTURE_2D,dummy);

glCopyTexImage2D(GL_TEXTURE_2D,0,GL_DEPTH_COMPONENT,0,0,512,512,0);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP);

glTexParameteri(GL_TEXTURE_2D,GL_DEPTH_TEXTURE_MODE_ARB,GL_LUMINANCE);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_COMPARE_MODE_ARB,GL_NONE);

glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_COMPARE_FUNC_ARB,GL_LEQUAL);

}

void inlz_gl_context ()

{

glGenProgramsARB(prgs,vps);

glGenProgramsARB(prgs,fps);

glGetError();

for (int i = 0; i < prgs; ++i)

{

glBindProgramARB(GL_VERTEX_PROGRAM_ARB,vps[i]);

glProgramStringARB(GL_VERTEX_PROGRAM_ARB,GL_PROGRAM_FORMAT_ASCII_ARB,

int(strlen(arbvps[i])),arbvps[i]);

if ( glGetError() != GL_NO_ERROR )

printf((char*)glGetString(GL_PROGRAM_ERROR_STRING_ARB));

glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,fps[i]);

glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB,GL_PROGRAM_FORMAT_ASCII_ARB,

int(strlen(arbfps[i])),arbfps[i]);

if ( glGetError() != GL_NO_ERROR )

printf((char*)glGetString(GL_PROGRAM_ERROR_STRING_ARB));

}

void display ()

{

// Left side: single pass, fetch the depth texture 4 times.

glViewport(0,0,512,512);

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

glMatrixMode(GL_PROJECTION);

glLoadIdentity ();

glMatrixMode(GL_MODELVIEW);

glLoadIdentity ();

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glEnable(GL_VERTEX_PROGRAM_ARB);

glEnable(GL_FRAGMENT_PROGRAM_ARB);

glBindProgramARB(GL_VERTEX_PROGRAM_ARB,vps[0]);

glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,fps[0]);

glBegin(GL_QUADS);

glTexCoord2f(0,0);

glVertex3f(-1,-1,0);

glTexCoord2f(1,0);

glVertex3f( 1,-1,0);

glTexCoord2f(1,1);

glVertex3f( 1, 1,0);

glTexCoord2f(0,1);

glVertex3f(-1, 1,0);

glEnd();

glDisable(GL_VERTEX_PROGRAM_ARB);

glDisable(GL_FRAGMENT_PROGRAM_ARB);

glRasterPos2f(-0.85f,0.7f);

glColor4f(0,0,0,1);

bmpstring("Single pass, multiple depth texture fetches");

// Right side: 4 passes, fetch the depth texture once per pass.

glViewport(512,0,512,512);

glEnable(GL_VERTEX_PROGRAM_ARB);

glEnable(GL_FRAGMENT_PROGRAM_ARB);

glBindProgramARB(GL_VERTEX_PROGRAM_ARB,vps[1]);

glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,fps[1]);

for (int i = 0; i < 4; ++i)

{

glColorMask(

i == 0 ? GL_TRUE : GL_FALSE,

i == 1 ? GL_TRUE : GL_FALSE,

i == 2 ? GL_TRUE : GL_FALSE,

i == 3 ? GL_TRUE : GL_FALSE

);

glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB,0,

i == 0 || i == 3 ? 0.0f : 0.1f,

i == 0 || i == 1 ? 0.0f : 0.1f,

);

glBegin(GL_QUADS);

glTexCoord2f(0,0);

glVertex3f(-1,-1,0);

glTexCoord2f(1,0);

glVertex3f( 1,-1,0);

glTexCoord2f(1,1);

glVertex3f( 1, 1,0);

glTexCoord2f(0,1);

glVertex3f(-1, 1,0);

glEnd();

}

glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);

glDisable(GL_VERTEX_PROGRAM_ARB);

glDisable(GL_FRAGMENT_PROGRAM_ARB);

glRasterPos2f(-0.85f,0.7f);

glColor4f(0,0,0,1);

bmpstring("Multiple passes, single depth texture fetch");

glutSwapBuffers();

}

void reshape (int wd, int ht)

{

win_wd = wd;

win_ht = ht;

}

void idle ()

{

glutPostRedisplay();

}

int main (int argc, char **argv)

{

glutInit(&argc, argv);

glutInitDisplayString ( "rgba double depth=24" );

glutInitWindowSize ( win_wd, win_ht );

glutCreateWindow ( "FPBugs" );

inlz_gl_context();

CreateTexture();

glutDisplayFunc( display );

glutReshapeFunc( reshape );

glutIdleFunc ( idle );

glutMainLoop();

return 0;

}

References:
	>corrupt textures on X1600 with 10.5.3? (From: Ben Supnik <email@hidden>)
	>Re: corrupt textures on X1600 with 10.5.3? (From: Dario Accornero <email@hidden>)
	>Re: corrupt textures on X1600 with 10.5.3? (From: Ben Supnik <email@hidden>)
	>RE: corrupt textures on X1600 with 10.5.3? (From: "Bentley, Chris" <email@hidden>)