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Add simple program to test GL_MESA_texture_array.
This commit is contained in:
Ian Romanick
parent
78bd2912f8
commit
2f61cbd30c
2 changed files with 344 additions and 0 deletions
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@ -23,6 +23,7 @@ SOURCES = \
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arbvptest3.c \
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arbvptorus.c \
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arbvpwarpmesh.c \
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arraytexture.c \
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blendminmax.c \
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blendsquare.c \
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bufferobj.c \
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@ -117,6 +118,12 @@ getprocaddress: getprocaddress.c getproclist.h
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getproclist.h: $(TOP)/src/mesa/glapi/gl_API.xml getprocaddress.c getprocaddress.py
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python getprocaddress.py > getproclist.h
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arraytexture: arraytexture.o readtex.o
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$(CC) $(CFLAGS) arraytexture.o readtex.o $(LIBS) -o $@
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arraytexture.o: arraytexture.c readtex.h
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$(CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@
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afsmultiarb: afsmultiarb.o readtex.o
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$(CC) $(CFLAGS) afsmultiarb.o readtex.o $(LIBS) -o $@
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337
progs/tests/arraytexture.c
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337
progs/tests/arraytexture.c
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@ -0,0 +1,337 @@
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/*
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* (C) Copyright IBM Corporation 2007
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* All Rights Reserved.
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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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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
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* IBM AND/OR ITS SUPPLIERS 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 DEALINGS
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* IN THE SOFTWARE.
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*/
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/**
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* \file arraytexture.c
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*
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*
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* \author Ian Romanick <idr@us.ibm.com>
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*/
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#include <assert.h>
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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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#include <math.h>
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#include <GL/glut.h>
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#include <GL/glext.h>
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#if !defined(GL_EXT_texture_array) && !defined(GL_MESA_texture_array)
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# error "This demo requires enums for either GL_EXT_texture_array or GL_MESA_texture_array to build."
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#endif
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#include "readtex.h"
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#define GL_CHECK_ERROR() \
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do { \
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GLenum err = glGetError(); \
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if (err) { \
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printf("%s:%u: %s (0x%04x)\n", __FILE__, __LINE__, \
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gluErrorString(err), err); \
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} \
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} while (0)
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static const char *const textures[] = {
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"../images/girl.rgb",
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"../images/girl2.rgb",
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"../images/arch.rgb",
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"../images/s128.rgb",
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"../images/tree3.rgb",
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"../images/bw.rgb",
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"../images/reflect.rgb",
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"../images/wrs_logo.rgb",
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NULL
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};
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static const char frag_prog[] =
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"!!ARBfp1.0\n"
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"OPTION MESA_texture_array;\n"
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"TEX result.color, fragment.texcoord[0], texture[0], ARRAY2D;\n"
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"END\n";
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static GLfloat Xrot = 0, Yrot = -30, Zrot = 0;
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static GLfloat texZ = 0.0;
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static GLfloat texZ_dir = 0.01;
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static GLint num_layers;
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static PFNGLBINDPROGRAMARBPROC bind_program;
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static PFNGLPROGRAMSTRINGARBPROC program_string;
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static PFNGLGENPROGRAMSARBPROC gen_programs;
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static void
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PrintString(const char *s)
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{
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while (*s) {
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glutBitmapCharacter(GLUT_BITMAP_8_BY_13, (int) *s);
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s++;
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}
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}
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static void Idle(void)
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{
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static int lastTime = 0;
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int t = glutGet(GLUT_ELAPSED_TIME);
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if (lastTime == 0)
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lastTime = t;
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else if (t - lastTime < 10)
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return;
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lastTime = t;
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texZ += texZ_dir;
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if ((texZ < 0.0) || ((GLint) texZ > num_layers)) {
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texZ_dir = -texZ_dir;
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}
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glutPostRedisplay();
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}
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static void Display(void)
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{
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char str[100];
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glClear(GL_COLOR_BUFFER_BIT);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(-1, 1, -1, 1, -1, 1);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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(*bind_program)(GL_FRAGMENT_PROGRAM_ARB, 0);
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glColor3f(1,1,1);
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glRasterPos3f(-0.9, -0.9, 0.0);
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sprintf(str, "Texture Z coordinate = %4.1f", texZ);
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PrintString(str);
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(*bind_program)(GL_FRAGMENT_PROGRAM_ARB, 1);
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GL_CHECK_ERROR();
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glEnable(GL_TEXTURE_2D_ARRAY_EXT);
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GL_CHECK_ERROR();
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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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glPushMatrix();
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glRotatef(Xrot, 1, 0, 0);
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glRotatef(Yrot, 0, 1, 0);
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glRotatef(Zrot, 0, 0, 1);
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glBegin(GL_QUADS);
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glTexCoord3f(0.0, 0.0, texZ); glVertex2f(-1.0, -1.0);
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glTexCoord3f(2.0, 0.0, texZ); glVertex2f(1.0, -1.0);
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glTexCoord3f(2.0, 2.0, texZ); glVertex2f(1.0, 1.0);
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glTexCoord3f(0.0, 2.0, texZ); glVertex2f(-1.0, 1.0);
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glEnd();
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glPopMatrix();
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glDisable(GL_TEXTURE_2D_ARRAY_EXT);
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GL_CHECK_ERROR();
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(*bind_program)(GL_FRAGMENT_PROGRAM_ARB, 0);
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GL_CHECK_ERROR();
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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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}
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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 SpecialKey(int key, int x, int y)
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{
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const GLfloat 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 int FindLine(const char *program, int position)
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{
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int i, line = 1;
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for (i = 0; i < position; i++) {
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if (program[i] == '\n')
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line++;
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}
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return line;
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}
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static void
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compile_fragment_program(GLuint id, const char *prog)
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{
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int errorPos;
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int err;
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err = glGetError();
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(*bind_program)(GL_FRAGMENT_PROGRAM_ARB, id);
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(*program_string)(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
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strlen(prog), (const GLubyte *) prog);
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glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorPos);
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err = glGetError();
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if (err != GL_NO_ERROR || errorPos != -1) {
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int l = FindLine(prog, errorPos);
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printf("Fragment Program Error (err=%d, pos=%d line=%d): %s\n",
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err, errorPos, l,
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(char *) glGetString(GL_PROGRAM_ERROR_STRING_ARB));
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exit(0);
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}
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}
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static void require_extension(const char *ext)
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{
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if (!glutExtensionSupported(ext)) {
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printf("Sorry, %s not supported by this renderer.\n", ext);
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exit(1);
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}
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}
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static void Init(void)
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{
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const char *const ver_string = (const char *const) glGetString(GL_VERSION);
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unsigned i;
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printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
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printf("GL_VERSION = %s\n", ver_string);
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require_extension("GL_ARB_fragment_program");
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require_extension("GL_MESA_texture_array");
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require_extension("GL_SGIS_generate_mipmap");
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bind_program = glutGetProcAddress("glBindProgramARB");
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program_string = glutGetProcAddress("glProgramStringARB");
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gen_programs = glutGetProcAddress("glGenProgramsARB");
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for (num_layers = 0; textures[num_layers] != NULL; num_layers++)
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/* empty */ ;
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glBindTexture(GL_TEXTURE_2D_ARRAY_EXT, 1);
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glTexImage3D(GL_TEXTURE_2D_ARRAY_EXT, 0, GL_RGB8,
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256, 256, num_layers, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
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GL_CHECK_ERROR();
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glTexParameteri(GL_TEXTURE_2D_ARRAY_EXT, GL_GENERATE_MIPMAP_SGIS,
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GL_TRUE);
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for (i = 0; textures[i] != NULL; i++) {
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GLint width, height;
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GLenum format;
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GLubyte *image = LoadRGBImage(textures[i], &width, &height, &format);
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if (!image) {
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printf("Error: could not load texture image %s\n", textures[i]);
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exit(1);
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}
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/* resize to 256 x 256 */
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if (width != 256 || height != 256) {
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GLubyte *newImage = malloc(256 * 256 * 4);
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gluScaleImage(format, width, height, GL_UNSIGNED_BYTE, image,
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256, 256, GL_UNSIGNED_BYTE, newImage);
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free(image);
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image = newImage;
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}
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glTexSubImage3D(GL_TEXTURE_2D_ARRAY_EXT, 0,
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0, 0, i, 256, 256, 1,
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format, GL_UNSIGNED_BYTE, image);
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free(image);
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}
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GL_CHECK_ERROR();
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glTexParameteri(GL_TEXTURE_2D_ARRAY_EXT, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D_ARRAY_EXT, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D_ARRAY_EXT, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D_ARRAY_EXT, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
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GL_CHECK_ERROR();
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glTexParameteri(GL_TEXTURE_2D_ARRAY_EXT, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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GL_CHECK_ERROR();
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compile_fragment_program(1, frag_prog);
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GL_CHECK_ERROR();
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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(350, 350);
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glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
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glutCreateWindow("Array texture test");
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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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glutIdleFunc(Idle);
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Init();
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glutMainLoop();
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return 0;
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}
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