Add tests for ARB_fp trig instructions and also for 1D texturing
This commit is contained in:
Keith Whitwell
parent
5d3568f36c
commit
ab41a96ae7
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@ -12,6 +12,7 @@ SOURCES = antialias.c \
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arbfpspec.c \
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arbfptest1.c \
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arbfptexture.c \
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arbfptrig.c \
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arbvptest1.c \
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arbvptest3.c \
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arbvptorus.c \
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@ -29,6 +30,7 @@ SOURCES = antialias.c \
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seccolor.c \
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sharedtex.c \
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stencilwrap.c \
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tex1d.c \
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texline.c \
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texrect.c \
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texwrap.c \
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@ -0,0 +1,156 @@
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/* GL_ARB_fragment_program texture test */
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#include <assert.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#define GL_GLEXT_PROTOTYPES
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#include <GL/glut.h>
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#include "readtex.c"
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#define TEXTURE_FILE "../images/girl.rgb"
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static GLfloat Xrot = 0.0, Yrot = 0.0, Zrot = 0.0;
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#define PI 3.141592
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static void Display( void )
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{
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glClear( GL_COLOR_BUFFER_BIT );
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glPushMatrix();
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glRotatef(Xrot, 1.0, 0.0, 0.0);
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glRotatef(Yrot, 0.0, 1.0, 0.0);
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glRotatef(Zrot, 0.0, 0.0, 1.0);
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glBegin(GL_POLYGON);
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glTexCoord2f(-PI, 0); glVertex2f(-1, -1);
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glTexCoord2f(PI, 0); glVertex2f( 1, -1);
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glTexCoord2f(PI, 1); glVertex2f( 1, 1);
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glTexCoord2f(-PI, 1); glVertex2f(-1, 1);
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glEnd();
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glPopMatrix();
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glutSwapBuffers();
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}
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static void Reshape( int width, int height )
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{
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glViewport( 0, 0, width, height );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 25.0 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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glTranslatef( 0.0, 0.0, -8.0 );
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}
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static void SpecialKey( int key, int x, int y )
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{
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float step = 3.0;
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(void) x;
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(void) y;
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switch (key) {
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case GLUT_KEY_UP:
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Xrot += step;
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break;
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case GLUT_KEY_DOWN:
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Xrot -= step;
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break;
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case GLUT_KEY_LEFT:
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Yrot += step;
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break;
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case GLUT_KEY_RIGHT:
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Yrot -= step;
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break;
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}
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glutPostRedisplay();
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}
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static void Key( unsigned char key, int x, int y )
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{
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(void) x;
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(void) y;
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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 void Init( void )
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{
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static const char *modulate2D =
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"!!ARBfp1.0\n"
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"TEMP R0;\n"
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"MOV R0, {0,0,0,1};\n"
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"SCS R0, fragment.texcoord[0].x; \n"
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"ADD R0, R0, {1.0}.x;\n"
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"MUL R0, R0, {0.5}.x;\n"
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"MOV result.color, R0; \n"
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"END"
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;
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GLuint modulateProg;
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GLuint Texture;
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if (!glutExtensionSupported("GL_ARB_fragment_program")) {
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printf("Error: GL_ARB_fragment_program not supported!\n");
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exit(1);
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}
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printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
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/* Setup the fragment program */
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glGenProgramsARB(1, &modulateProg);
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glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, modulateProg);
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glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
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strlen(modulate2D), (const GLubyte *)modulate2D);
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printf("glGetError = 0x%x\n", (int) glGetError());
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printf("glError(GL_PROGRAM_ERROR_STRING_ARB) = %s\n",
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(char *) glGetString(GL_PROGRAM_ERROR_STRING_ARB));
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assert(glIsProgramARB(modulateProg));
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glEnable(GL_FRAGMENT_PROGRAM_ARB);
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/* Load texture */
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glGenTextures(1, &Texture);
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glBindTexture(GL_TEXTURE_2D, Texture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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if (!LoadRGBMipmaps(TEXTURE_FILE, GL_RGB)) {
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printf("Error: couldn't load texture image file %s\n", TEXTURE_FILE);
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exit(1);
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}
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/* XXX this enable shouldn't really be needed!!! */
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glEnable(GL_TEXTURE_2D);
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glClearColor(.3, .3, .3, 0);
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}
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int main( int argc, char *argv[] )
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{
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glutInit( &argc, argv );
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glutInitWindowPosition( 0, 0 );
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glutInitWindowSize( 250, 250 );
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glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
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glutCreateWindow(argv[0]);
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glutReshapeFunc( Reshape );
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glutKeyboardFunc( Key );
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glutSpecialFunc( SpecialKey );
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glutDisplayFunc( Display );
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Init();
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glutMainLoop();
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return 0;
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}
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@ -0,0 +1,139 @@
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/* Exercise 1D textures
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*/
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#include <assert.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "GL/glut.h"
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static GLuint Window = 0;
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static GLuint TexObj[2];
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static GLfloat Angle = 0.0f;
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static void draw( void )
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{
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glClear( GL_COLOR_BUFFER_BIT );
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glColor3f( 1.0, 1.0, 1.0 );
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/* draw first polygon */
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glPushMatrix();
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glTranslatef( -1.0, 0.0, 0.0 );
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glRotatef( Angle, 0.0, 0.0, 1.0 );
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glBindTexture( GL_TEXTURE_1D, TexObj[0] );
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glBegin( GL_POLYGON );
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glTexCoord1f( 0.0 ); glVertex2f( -1.0, -1.0 );
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glTexCoord1f( 1.0 ); glVertex2f( 1.0, -1.0 );
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glTexCoord1f( 1.0 ); glVertex2f( 1.0, 1.0 );
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glTexCoord1f( 0.0 ); glVertex2f( -1.0, 1.0 );
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glEnd();
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glPopMatrix();
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glutSwapBuffers();
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}
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static void idle( void )
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{
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Angle += 2.0;
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glutPostRedisplay();
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}
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/* change view Angle, exit upon ESC */
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static void key(unsigned char k, int x, int y)
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{
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(void) x;
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(void) y;
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switch (k) {
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case 27:
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exit(0);
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}
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}
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/* new window size or exposure */
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static void reshape( int width, int height )
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{
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glViewport(0, 0, (GLint)width, (GLint)height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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/* glOrtho( -3.0, 3.0, -3.0, 3.0, -10.0, 10.0 );*/
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glFrustum( -2.0, 2.0, -2.0, 2.0, 6.0, 20.0 );
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslatef( 0.0, 0.0, -8.0 );
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}
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static void init( void )
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{
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GLubyte tex[256][3];
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GLint i;
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glDisable( GL_DITHER );
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/* Setup texturing */
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glEnable( GL_TEXTURE_1D );
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glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL );
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/* generate texture object IDs */
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glGenTextures( 2, TexObj );
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/* setup first texture object */
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glBindTexture( GL_TEXTURE_1D, TexObj[0] );
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for (i = 0; i < 256; i++) {
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GLfloat f;
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/* map 0..255 to -PI .. PI */
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f = ((i / 255.0) - .5) * (3.141592 * 2);
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f = sin(f);
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/* map -1..1 to 0..255 */
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tex[i][0] = (f+1.0)/2.0 * 255.0;
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tex[i][1] = 0;
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tex[i][2] = 0;
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}
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glTexImage1D( GL_TEXTURE_1D, 0, 3, 256, 0, GL_RGB, GL_UNSIGNED_BYTE, tex );
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glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
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glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
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glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT );
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glTexParameteri( GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_REPEAT );
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}
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int main( int argc, char *argv[] )
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{
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glutInit(&argc, argv);
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glutInitWindowPosition(0, 0);
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glutInitWindowSize(300, 300);
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glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
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Window = glutCreateWindow("Texture Objects");
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if (!Window) {
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exit(1);
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}
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init();
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glutReshapeFunc( reshape );
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glutKeyboardFunc( key );
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/* glutIdleFunc( idle ); */
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glutDisplayFunc( draw );
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glutMainLoop();
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return 0;
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}
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