From a528eb51ebf9aa9431d768627faad3cadaefae3c Mon Sep 17 00:00:00 2001 From: Jakob Bornecrantz Date: Wed, 18 Mar 2009 13:29:03 +0100 Subject: progs/tests: Update mipmap_limits to show image and colors --- progs/tests/Makefile | 5 ++ progs/tests/mipmap_limits.c | 197 +++++++++++++++++++++++++++++--------------- 2 files changed, 135 insertions(+), 67 deletions(-) diff --git a/progs/tests/Makefile b/progs/tests/Makefile index eb6b6bd639c..4d7cc88cc2e 100644 --- a/progs/tests/Makefile +++ b/progs/tests/Makefile @@ -184,6 +184,11 @@ mipmap_view: mipmap_view.o readtex.o mipmap_view.o: mipmap_view.c readtex.h $(APP_CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@ +mipmap_limits: mipmap_limits.o readtex.o + $(APP_CC) $(CFLAGS) mipmap_limits.o readtex.o $(LIBS) -o $@ + +mipmap_limits.o: mipmap_limits.c readtex.h + $(APP_CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@ fillrate: fillrate.o readtex.o $(APP_CC) $(CFLAGS) fillrate.o readtex.o $(LIBS) -o $@ diff --git a/progs/tests/mipmap_limits.c b/progs/tests/mipmap_limits.c index 7f0390b07dd..5b899cd1551 100644 --- a/progs/tests/mipmap_limits.c +++ b/progs/tests/mipmap_limits.c @@ -54,17 +54,22 @@ #include #include -static GLint BaseLevel = 0, MaxLevel = 8; +#include "readtex.h" + +#define TEXTURE_FILE "../images/girl.rgb" + +static GLint BaseLevel = 0, MaxLevel = 9; static GLfloat MinLod = -1, MaxLod = 9; static GLfloat LodBias = 0.0; static GLboolean NearestFilter = GL_TRUE; +static GLuint texImage, texColor, texCurrent; static void InitValues(void) { BaseLevel = 0; - MaxLevel = 8; + MaxLevel = 9; MinLod = -1; MaxLod = 9; LodBias = 0.0; @@ -75,7 +80,7 @@ InitValues(void) static void MakeImage(int level, int width, int height, const GLubyte color[4]) { const int makeStripes = 0; - GLubyte img[256*256*3]; + GLubyte img[512*512*3]; int i, j; for (i = 0; i < height; i++) { for (j = 0; j < width; j++) { @@ -99,87 +104,138 @@ static void MakeImage(int level, int width, int height, const GLubyte color[4]) } -static void makeImages(void) +static void makeImages(int image) { - static const GLubyte colors[8][3] = { - {128, 128, 128 }, - { 0, 255, 255 }, - { 255, 255, 0 }, - { 255, 0, 255 }, - { 255, 0, 0 }, - { 0, 255, 0 }, - { 0, 0, 255 }, - { 255, 255, 255 } - }; - int i, sz = 128; - - for (i = 0; i < 8; i++) { - MakeImage(i, sz, sz, colors[i]); - sz /= 2; +#define WIDTH 512 +#define HEIGHT 512 + if (glutExtensionSupported("GL_SGIS_generate_mipmap") && image) { + /* test auto mipmap generation */ + GLint width, height, i; + GLenum format; + GLubyte *image = LoadRGBImage(TEXTURE_FILE, &width, &height, &format); + if (!image) { + printf("Error: could not load texture image %s\n", TEXTURE_FILE); + exit(1); + } + /* resize */ + if (width != WIDTH || height != HEIGHT) { + GLubyte *newImage = malloc(WIDTH * HEIGHT * 4); + gluScaleImage(format, width, height, GL_UNSIGNED_BYTE, image, + WIDTH, HEIGHT, GL_UNSIGNED_BYTE, newImage); + free(image); + image = newImage; + } + printf("Using GL_SGIS_generate_mipmap\n"); + glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); + glTexImage2D(GL_TEXTURE_2D, 0, format, WIDTH, HEIGHT, 0, + format, GL_UNSIGNED_BYTE, image); + glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_FALSE); + free(image); + + /* make sure mipmap was really generated correctly */ + width = WIDTH; height = HEIGHT; + for (i = 0; i < 10; i++) { + GLint w, h; + glGetTexLevelParameteriv(GL_TEXTURE_2D, i, GL_TEXTURE_WIDTH, &w); + glGetTexLevelParameteriv(GL_TEXTURE_2D, i, GL_TEXTURE_HEIGHT, &h); + printf("Level %d size: %d x %d\n", i, w, h); + width /= 2; + height /= 2; + } + } else { + static const GLubyte colors[10][3] = { + {128, 128, 128 }, + { 0, 255, 255 }, + { 255, 255, 0 }, + { 255, 0, 255 }, + { 255, 0, 0 }, + { 0, 255, 0 }, + { 0, 0, 255 }, + { 0, 255, 255 }, + { 255, 255, 0 }, + { 255, 255, 255 } + }; + int i, sz = 512; + + for (i = 0; i < 10; i++) { + MakeImage(i, sz, sz, colors[i]); + printf("Level %d size: %d x %d\n", i, sz, sz); + sz /= 2; + } } } static void myinit(void) { - InitValues(); + InitValues(); + + glEnable(GL_DEPTH_TEST); + glDepthFunc(GL_LESS); + glShadeModel(GL_FLAT); - glEnable(GL_DEPTH_TEST); - glDepthFunc(GL_LESS); - glShadeModel(GL_FLAT); + glTranslatef(0.0, 0.0, -3.6); - glTranslatef(0.0, 0.0, -3.6); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + glGenTextures(1, &texImage); + glBindTexture(GL_TEXTURE_2D, texImage); + makeImages(1); + glGenTextures(1, &texColor); + glBindTexture(GL_TEXTURE_2D, texColor); + makeImages(0); - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - makeImages(); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); - glEnable(GL_TEXTURE_2D); + texCurrent = texImage; + + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); + glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); + glEnable(GL_TEXTURE_2D); } static void display(void) { - GLfloat tcm = 4.0; - printf("BASE_LEVEL=%d MAX_LEVEL=%d MIN_LOD=%.2g MAX_LOD=%.2g Bias=%.2g Filter=%s\n", - BaseLevel, MaxLevel, MinLod, MaxLod, LodBias, - NearestFilter ? "NEAREST" : "LINEAR"); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, BaseLevel); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, MaxLevel); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_LOD, MinLod); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_LOD, MaxLod); - - if (NearestFilter) { - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, - GL_NEAREST_MIPMAP_NEAREST); - } - else { - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, - GL_LINEAR_MIPMAP_LINEAR); - } - - glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, LodBias); - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - glBegin(GL_QUADS); - glTexCoord2f(0.0, 0.0); glVertex3f(-2.0, -1.0, 0.0); - glTexCoord2f(0.0, tcm); glVertex3f(-2.0, 1.0, 0.0); - glTexCoord2f(tcm, tcm); glVertex3f(3000.0, 1.0, -6000.0); - glTexCoord2f(tcm, 0.0); glVertex3f(3000.0, -1.0, -6000.0); - glEnd(); - glFlush(); + GLfloat tcm = 1.0; + glBindTexture(GL_TEXTURE_2D, texCurrent); + + printf("BASE_LEVEL=%d MAX_LEVEL=%d MIN_LOD=%.2g MAX_LOD=%.2g Bias=%.2g Filter=%s\n", + BaseLevel, MaxLevel, MinLod, MaxLod, LodBias, + NearestFilter ? "NEAREST" : "LINEAR"); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, BaseLevel); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, MaxLevel); + + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_LOD, MinLod); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_LOD, MaxLod); + + if (NearestFilter) { + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, + GL_NEAREST_MIPMAP_NEAREST); + } + else { + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, + GL_LINEAR_MIPMAP_LINEAR); + } + + glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, LodBias); + + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + glBegin(GL_QUADS); + glTexCoord2f(0.0, 0.0); glVertex3f(-2.0, -1.0, 0.0); + glTexCoord2f(0.0, tcm); glVertex3f(-2.0, 1.0, 0.0); + glTexCoord2f(tcm * 3000.0, tcm); glVertex3f(3000.0, 1.0, -6000.0); + glTexCoord2f(tcm * 3000.0, 0.0); glVertex3f(3000.0, -1.0, -6000.0); + glEnd(); + glFlush(); } static void myReshape(int w, int h) { - glViewport(0, 0, w, h); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluPerspective(60.0, 1.0*(GLfloat)w/(GLfloat)h, 1.0, 30000.0); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); + glViewport(0, 0, w, h); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + gluPerspective(60.0, 1.0*(GLfloat)w/(GLfloat)h, 1.0, 30000.0); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); } static void @@ -229,6 +285,12 @@ key(unsigned char k, int x, int y) case 'f': NearestFilter = !NearestFilter; break; + case 't': + if (texCurrent == texColor) + texCurrent = texImage; + else + texCurrent = texColor; + break; case ' ': InitValues(); break; @@ -251,6 +313,7 @@ static void usage(void) printf(" x/X decrease/increase GL_TEXTURE_MAX_LOD\n"); printf(" l/L decrease/increase GL_TEXTURE_LOD_BIAS\n"); printf(" f toggle nearest/linear filtering\n"); + printf(" t toggle texture color/image\n"); printf(" SPACE reset values\n"); } -- cgit v1.2.3