void myinit()
{
int i;
glClearColor (0.0, 0.0, 0.0, 1.0);
gluOrtho2D(0.0, (GLdouble) n, 0.0, (GLdouble) m);//(left, right,bottom,top)
// define pseudocolor maps, ramps for red blue green
for(i=0;i<255;i++){
//redmap[i]=(sin (PI/(i+1))+1)/2;//rings, not a large range of color,
//redmap[i] = 1-i/255.0; //bright center dark top/bot
//redmap[i] = i/255.0;//edges faint
redmap[i] = 0.7*((i<128)?i/128.0: 1-(i-128)/128.0);//edges faint
bluemap[i]=(i<128)?1-i/128.0: (i-128)/128.0;//filled center bright edges (red)
greenmap[i]=(i<64)?1-(i+64)/128.0:((i<172)?(i-64)/128.0:1-(i-172)/128.0);//edges center
//redmap[i] = (i*i/ pow(1.1,i))/60;//rings and edges
//redmap[i] = (0.0003259469*i*i-0.000001278223*i*i*i)/3.2;//edges and top/bot
//redmap[i] = 0.0;
//greenmap[i] = 0.0;
//bluemap[i] = 0.0;
}
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, bluemap);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, redmap);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, greenmap);
}
void
piglit_init(int argc, char **argv)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glTranslatef(-1.0, -1.0, 0.0);
glScalef(2.0/piglit_width, 2.0/piglit_height, 1.0);
glDisable(GL_DITHER);
glClearColor(1, 1, 1, 1);
glBlendFunc(GL_SRC_ALPHA, GL_ZERO);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 2, r_map);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 2, g_map);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 2, b_map);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, 2, a_map);
glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glPixelStorei(GL_UNPACK_ALIGNMENT, ALIGN);
glGenTextures(1, &tex_name);
glBindTexture(GL_TEXTURE_2D, tex_name);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
void Texture::setup_pixel_transfer_for_grayscale(int nb_colors )
{
nb_colors_ = nb_colors ;
ogf_assert(nb_colors_ <= 512) ;
if(!encode_indexed_to_rgb_) {
static float i2r[512] ;
static float i2g[512] ;
static float i2b[512] ;
static float i2a[512] ;
for(int i=0; i<nb_colors_; i++) {
float c = float(i) / float(nb_colors - 1) ;
i2r[i] = c ;
i2g[i] = c ;
i2b[i] = c ;
i2a[i] = c ;
}
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, nb_colors, i2r);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, nb_colors, i2g);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, nb_colors, i2b);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, nb_colors, i2a);
} else {
for(int i=0; i<nb_colors_; i++) {
Memory::byte c = Memory::byte(
255.0 * float(i) / float(nb_colors - 1)
) ;
i2r_[i] = c ;
i2g_[i] = c ;
i2b_[i] = c ;
i2a_[i] = c ;
}
}
}
void Texture::setup_pixel_transfer_for_colormap(const Colormap* colormap)
{
nb_colors_ = colormap->size() ;
ogf_assert(nb_colors_ <= 512) ;
if(!encode_indexed_to_rgb_) {
static float i2r[512] ;
static float i2g[512] ;
static float i2b[512] ;
static float i2a[512] ;
for(int i=0; i<nb_colors_; i++) {
i2r[i] = float(colormap->color_cell(i).r()) / 255.0f ;
i2g[i] = float(colormap->color_cell(i).g()) / 255.0f ;
i2b[i] = float(colormap->color_cell(i).b()) / 255.0f ;
i2a[i] = float(colormap->color_cell(i).a()) / 255.0f ;
}
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, nb_colors_, i2r);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, nb_colors_, i2g);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, nb_colors_, i2b);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, nb_colors_, i2a);
} else {
for(int i=0; i<nb_colors_; i++) {
i2r_[i] = colormap->color_cell(i).r() ;
i2g_[i] = colormap->color_cell(i).g() ;
i2b_[i] = colormap->color_cell(i).b() ;
i2a_[i] = colormap->color_cell(i).a() ;
}
}
}
Win32GLGrDriver2D::Context::Context( Win32GLGraphics *g ):BBGrContext(g),
graphics(g),font(_font),glFont(0),cliprect(0,0,g->width(),g->height()),color(BBColor::white()){
font->retain();
if( !graphics->glContext() ) return;
bbPushGLContext( graphics->glContext() );
glViewport( 0,0,g->width(),g->height() );
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
glOrtho( 0,g->width(),g->height(),0,0,1 );
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
glAlphaFunc( GL_GREATER,.5f );
glColor3ub( 255,255,255 );
float pm[2]={0,1};
glPixelMapfv( GL_PIXEL_MAP_I_TO_R,2,pm );
glPixelMapfv( GL_PIXEL_MAP_I_TO_G,2,pm );
glPixelMapfv( GL_PIXEL_MAP_I_TO_B,2,pm );
bbPopGLContext();
}
void ogl_Setup() {
glViewport(0, 0, g_iWidth, g_iHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0, static_cast<float>(g_iWidth) / static_cast<float>(g_iHeight), 0.1, 100);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClearDepth(1.0f);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glShadeModel(GL_SMOOTH);
glDisable(GL_LIGHTING);
glCullFace(GL_BACK);
glFrontFace(GL_CCW);
glEnable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_ALPHA_TEST);
glEnable(GL_TEXTURE_2D);
glGenTextures(1, &g_uiTexName);
img_Load8bppBMP(std::string("test.bmp"));
for (int i = 0; i < 256; i++) g_apal[i] = 1.0f;
/* std::ofstream tf("maps.txt");
for (i = 0; i < 256; i++) {
tf << i << " R: " << g_rpal[i] << ", G: " << g_gpal[i] << ", B: " << g_bpal[i] << ", A: " << g_apal[i] << std::endl;
} */
/*std::ofstream bin("index.bin", std::ios_base::binary | std::ios_base::out);
bin.write(g_data, 512*512);*/
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, g_rpal);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, g_gpal);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, g_bpal);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, 256, g_apal);
glBindTexture(GL_TEXTURE_2D, g_uiTexName);
glTexImage2D(GL_TEXTURE_2D, 0, 4, g_iTexWid, g_iTexHei, 0, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, g_pcData);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
void WaterfallContext::refreshTheme() {
glEnable (GL_TEXTURE_2D);
for (int i = 0; i < 2; i++) {
glBindTexture(GL_TEXTURE_2D, waterfall[i]);
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, &(ThemeMgr::mgr.currentTheme->waterfallGradient.getRed())[0]);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, &(ThemeMgr::mgr.currentTheme->waterfallGradient.getGreen())[0]);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, &(ThemeMgr::mgr.currentTheme->waterfallGradient.getBlue())[0]);
}
}
void RenderToTexture(size_t screenw, size_t screenh)
{
static bool once(false);
static size_t w(0), h(0);
if(selected_shader == -1)
return;
if(!once)
{
glGenTextures(1, &r2texture);
once = true;
}
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, r2texture);
if(selected_shader == -1)
{
// no shading at all, use imaging extension
float map[256];
for(int i = 0; i < 256; i++)map[i]=(float)(i)/256;
//glPixelTransferi(GL_MAP_COLOR, true);
// glPixelMapfv(GL_PIXEL_MAP_R_TO_R, 256, map);
//glPixelMapfv(GL_PIXEL_MAP_I_TO_I, 256, map);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, map);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, map);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, map);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, 256, map);
}
if(w != next_pow2(screenw) || h != next_pow2(screenh))
{
w = next_pow2(screenw);
h = next_pow2(screenh);
glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, w, h, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
else
{
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, screenw, screenh);
}
if(selected_shader == -1)
glPixelTransferi(GL_MAP_COLOR, false);
}
void Texture::enablePalette()
{
#ifndef HAVE_GLES
if (!hasPalette()) return;
glPixelTransferi(GL_INDEX_SHIFT, 0);
glPixelTransferi(GL_INDEX_OFFSET, 0);
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, paletteSize, paletteRed);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, paletteSize, paletteGreen);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, paletteSize, paletteBlue);
#endif
}
void Win32GLGrDriver2D::setColor( BBColor c ){
_context->color=c;
if( !_glContext ) return;
glColor3ub( c.r,c.g,c.b );
float pm_r[]={0,c.r/255.0f};
float pm_g[]={0,c.g/255.0f};
float pm_b[]={0,c.b/255.0f};
glPixelMapfv( GL_PIXEL_MAP_I_TO_R,2,pm_r );
glPixelMapfv( GL_PIXEL_MAP_I_TO_G,2,pm_g );
glPixelMapfv( GL_PIXEL_MAP_I_TO_B,2,pm_b );
}
void key(unsigned char k, int xx, int yy){
int i;
if(k=='r'){
if(redTog==1){
for(i=0;i<256;i++){
redmap[i] = 0.0;
}
redTog=0;
}else{
for(i=0;i<256;i++){
redmap[i] = (i<128)?1-i/128.0: (i-128)/128.0;
}
redTog=1;
}
}
if(k=='b'){
if(blueTog==1){
for(i=0;i<256;i++){
bluemap[i] = 0.0;
}
blueTog=0;
}else{
for(i=0;i<256;i++){
bluemap[i] = i/255.0;
}
blueTog=1;
}
}
if(k=='g'){
if(greenTog==1){
for(i=0;i<256;i++){
greenmap[i] = 0.0;
}
greenTog=0;
}else{
for(i=0;i<256;i++){
greenmap[i] = (i<64)?1-(i+64)/128.0:((i<172)?(i-64)/128.0:1-(i-172)/128.0);
}
greenTog=1;
}
}
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, bluemap);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, redmap);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, greenmap);
glDrawPixels(n,m,GL_COLOR_INDEX, GL_UNSIGNED_BYTE, dimention[dimIter].image);
glFlush();
}
void __glXDisp_PixelMapfv(GLbyte *pc)
{
glPixelMapfv(
*(GLenum *)(pc + 0),
*(GLint *)(pc + 4),
(GLfloat *)(pc + 8)
);
}
void download_palette(Image const * palette)
{
Image_Format format = palette->format;
int const map_size = format.size.x;
/* XXX relax for other format and types */
assert(format.format == GL_RGBA);
assert(format.type == GL_UNSIGNED_BYTE);
assert(format.size.y == 1);
assert(format.size.z == 1);
unsigned char * pixels = (unsigned char *) palette->pixels;
float * map[4] =
{
(float *) malloc(map_size * sizeof(GLubyte)),
(float *) malloc(map_size * sizeof(GLubyte)),
(float *) malloc(map_size * sizeof(GLubyte)),
(float *) malloc(map_size * sizeof(GLubyte))
};
int i;
for (i = 0; i != map_size; ++ i)
{
map[0][i] = pixels[i * 4 + 0] / 255.0;
map[1][i] = pixels[i * 4 + 1] / 255.0;
map[2][i] = pixels[i * 4 + 2] / 255.0;
map[3][i] = pixels[i * 4 + 3] / 255.0;
}
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, map_size, map[0]);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, map_size, map[1]);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, map_size, map[2]);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, map_size, map[3]);
free(map[0]);
free(map[1]);
free(map[2]);
free(map[3]);
}
void set_palette() {
GLfloat red[256], green[256], blue[256];
for (int i = 0; i < 256 ; i++) {
red[i] = colors[i+COLOROFFSET][0];
green[i] = colors[i+COLOROFFSET][1];
blue[i] = colors[i+COLOROFFSET][2];
}
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, red);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, green);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, blue);
glPixelTransferi(GL_INDEX_SHIFT, -8);
// glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
// glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
}
/* use pixel path to remap 3D texture data */
void
remaptex(void)
{
int i, size;
GLfloat *map;
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
glGetIntegerv(GL_MAX_PIXEL_MAP_TABLE, &size);
map = (GLfloat *)malloc(sizeof(GLfloat) * size);
for(i = 0; i < size;i++)
{
map[i] = (GLfloat)i/(size - 1);
if(((GLfloat)i/size > minboost) &&
((GLfloat)i/size < minboost + boostwid))
{
map[i] *= boost;
}
else
map[i] /= boost;
}
glPixelMapfv(GL_PIXEL_MAP_R_TO_R, size, map);
glPixelMapfv(GL_PIXEL_MAP_G_TO_G, size, map);
glPixelMapfv(GL_PIXEL_MAP_B_TO_B, size, map);
glPixelMapfv(GL_PIXEL_MAP_A_TO_A, size, map);
#ifdef GL_EXT_texture3D
glTexImage3DEXT(GL_TEXTURE_3D_EXT, 0, GL_LUMINANCE_ALPHA,
texwid, texht, texdepth,
0,
GL_RGBA, GL_UNSIGNED_BYTE, tex3ddata);
#endif
glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
free(map);
CHECK_ERROR("OpenGL Error in remaptex()");
}
void myinit()
{
float redmap[256], greenmap[256],bluemap[256];
int i;
glClearColor (1.0, 1.0, 1.0, 1.0);
gluOrtho2D(0.0, 0.0, (GLfloat) n, (GLfloat) m);
/* Define pseudocolor maps, ramps for red and blue,
random for green */
for(i=0; i<256; i++)
{
redmap[i]=i/255.;
greenmap[i]=drand48();
bluemap[i]=1.0-i/255.;
}
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, redmap);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, greenmap);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, bluemap);
}
void
init(void)
{
int colorMatrixExtension,
blendMinMaxExtension;
/*
* Points
*/
points = (Point *) malloc(maxPoints * sizeof(Point));
makepoints();
makecone();
/*
* Matrices
*/
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1.0, 1.0, -1.0, 1.0, -4.0, 4.0);
glMatrixMode(GL_MODELVIEW);
glScalef(2.0 / w, 2.0 / h, 1.0);
glTranslatef(-w / 2.0, -h / 2.0, 0.0);
/*
* Misc
*/
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
/*
* Test for the required features
*/
colorMatrixExtension = isExtensionSupported("GL_SGI_color_matrix");
blendMinMaxExtension = isExtensionSupported("GL_EXT_blend_minmax");
canDrawEdges = (colorMatrixExtension && blendMinMaxExtension) ||
(strncmp((const char *) glGetString(GL_VERSION), "1.2", 3) == 0);
/*
* Test for blend extension
*/
if (canDrawEdges) {
GLfloat table[256];
int i;
/*
* Pixel transfer parameters
*/
table[0] = 1.0;
for (i = 1; i < 256; i++)
table[i] = 0.0;
glPixelMapfv(GL_PIXEL_MAP_R_TO_R, 256, table);
glPixelMapfv(GL_PIXEL_MAP_G_TO_G, 256, table);
glPixelMapfv(GL_PIXEL_MAP_B_TO_B, 256, table);
} else {
printf("This OpenGL implementation does not support the color matrix and/or\n");
printf("the min/max blending equations, therefore the option to draw the\n");
printf("Voronoi region edges is unavailable.\n\n");
printf("The required features are available with OpenGL 1.2 or the GL_EXT_blend_minmax\n");
printf("and GL_SGI_color_matrix extensions.\n");
}
}
M(void, glPixelMapfv, jint map, jint mapsize, jobject values) {
glPixelMapfv(map, mapsize, BUFF(GLfloat, values));
}
void app_DrawFrame() {
static float rot = 0.0f;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0f, 0.0f, -3.0f);
if (g_bRotate) rot += 1.0f;
glRotatef(rot, 0.0, 1.0, 0.0);
if (g_bCycle1) {
GLfloat tmp[4];
tmp[0] = g_rpal[256 - 16 - 1];
tmp[1] = g_gpal[256 - 16 - 1];
tmp[2] = g_bpal[256 - 16 - 1];
tmp[3] = g_apal[256 - 16 - 1];
for (int i = 256 - 16 - 1; i > 0; i--) {
g_rpal[i] = g_rpal[i-1];
g_gpal[i] = g_gpal[i-1];
g_bpal[i] = g_bpal[i-1];
g_apal[i] = g_apal[i-1];
}
g_rpal[0] = tmp[0];
g_gpal[0] = tmp[1];
g_bpal[0] = tmp[2];
g_apal[0] = tmp[3];
}
if (g_bCycle2) {
GLfloat tmp[4];
tmp[0] = g_rpal[256 - 1];
tmp[1] = g_gpal[256 - 1];
tmp[2] = g_bpal[256 - 1];
tmp[3] = g_apal[256 - 1];
for (int i = 256 - 1; i > 256 - 16; i--) {
g_rpal[i] = g_rpal[i-1];
g_gpal[i] = g_gpal[i-1];
g_bpal[i] = g_bpal[i-1];
g_apal[i] = g_apal[i-1];
}
g_rpal[256 - 16] = tmp[0];
g_gpal[256 - 16] = tmp[1];
g_bpal[256 - 16] = tmp[2];
g_apal[256 - 16] = tmp[3];
}
if (g_bCycle1 || g_bCycle2) {
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, g_rpal);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, g_gpal);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, g_bpal);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, 256, g_apal);
glBindTexture(GL_TEXTURE_2D, g_uiTexName);
glTexSubImage2D
(
GL_TEXTURE_2D,
0, 0, 0,
g_iTexWid, g_iTexHei,
GL_COLOR_INDEX, GL_UNSIGNED_BYTE,
g_pcData
);
}
glBegin(GL_QUADS);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBindTexture(GL_TEXTURE_2D, g_uiTexName);
// Front face
glTexCoord2f(1.0f, 0.0f);
glVertex3f(1.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(-1.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 1.0f);
glVertex3f(-1.0f, -1.0f, 0.0f);
glTexCoord2f(1.0f, 1.0f);
glVertex3f(1.0f, -1.0f, 0.0f);
// Back face
glTexCoord2f(1.0f, 0.0f);
glVertex3f(-1.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 0.0f);
glVertex3f(1.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 1.0f);
glVertex3f(1.0f, -1.0f, 0.0f);
glTexCoord2f(1.0f, 1.0f);
glVertex3f(-1.0f, -1.0f, 0.0f);
glEnd();
glFlush();
}
static void Draw(void)
{
float mapI[2], mapIA[2], mapIR[2];
glClear(GL_COLOR_BUFFER_BIT);
mapI[0] = 0.0;
mapI[1] = 1.0;
mapIR[0] = 0.0;
mapIR[1] = 0.0;
mapIA[0] = 1.0;
mapIA[1] = 1.0;
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 2, mapIR);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 2, mapI);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 2, mapI);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, 2, mapIA);
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
SetColor(COLOR_WHITE);
glRasterPos3fv(boxA);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 24);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 8);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 2);
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glBitmap(16, 12, 8.0, 0.0, 0.0, 0.0, logo_bits);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_TRUE);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
SetColor(COLOR_WHITE);
glRasterPos3fv(boxB);
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0,
OpenGL_bits1);
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0,
OpenGL_bits2);
SetColor(COLOR_YELLOW);
glRasterPos3fv(boxC);
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0,
OpenGL_bits1);
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0,
OpenGL_bits2);
SetColor(COLOR_CYAN);
glRasterPos3fv(boxD);
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0,
OpenGL_bits1);
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0,
OpenGL_bits2);
SetColor(COLOR_RED);
glRasterPos3fv(boxE);
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0,
OpenGL_bits1);
glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, OPENGL_WIDTH, 0.0, OPENGL_WIDTH, 0.0,
OpenGL_bits2);
glFlush();
if (doubleBuffer) {
glutSwapBuffers();
}
}
void
DisplayScene(void)
{
static GLboolean pixelsFlipped = GL_FALSE;
static GLfloat saturation = 1.0;
GLfloat colorMap[256];
GLint i;
glClear(GL_COLOR_BUFFER_BIT);
/*
* Let OpenGL know that when it reads our pixel data from memory it's
* TIGHTLY packed. Not packed to it's default of 4 bytes.
*/
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
switch(renderMode)
{
case 1:
if(pixelsFlipped != GL_TRUE)
{
glPixelZoom(-1.0, -1.0);
glRasterPos2i(img->width, img->height);
pixelsFlipped = GL_TRUE;
}
else
{
glPixelZoom(1.0, 1.0);
glRasterPos2i(0, 0);
pixelsFlipped = GL_FALSE;
}
break;
case 2:
glPixelTransferf(GL_RED_SCALE, 1.0);
glPixelTransferf(GL_GREEN_SCALE, 1.0);
glPixelTransferf(GL_BLUE_SCALE, 1.0);
break;
case 3:
glPixelTransferf(GL_RED_SCALE, 1.0);
glPixelTransferf(GL_GREEN_SCALE, 0.0);
glPixelTransferf(GL_BLUE_SCALE, 0.0);
break;
case 4:
glPixelTransferf(GL_RED_SCALE, 0.0);
glPixelTransferf(GL_GREEN_SCALE, 1.0);
glPixelTransferf(GL_BLUE_SCALE, 0.0);
break;
case 5:
glPixelTransferf(GL_RED_SCALE, 0.0);
glPixelTransferf(GL_GREEN_SCALE, 0.0);
glPixelTransferf(GL_BLUE_SCALE, 1.0);
break;
case 6:
saturation -= 0.5;
glPixelTransferf(GL_RED_SCALE, saturation);
glPixelTransferf(GL_GREEN_SCALE, saturation);
glPixelTransferf(GL_BLUE_SCALE, saturation);
break;
case 7:
saturation += 0.5;
glPixelTransferf(GL_RED_SCALE, saturation);
glPixelTransferf(GL_GREEN_SCALE, saturation);
glPixelTransferf(GL_BLUE_SCALE, saturation);
break;
case 8:
colorMap[0] = 1.0f;
for(i = 1; i < 256; i++)
colorMap[i] = 1.0f - (1.0f / 255.0f * (GLfloat)i);
glPixelMapfv(GL_PIXEL_MAP_R_TO_R, 255, colorMap);
glPixelMapfv(GL_PIXEL_MAP_G_TO_G, 255, colorMap);
glPixelMapfv(GL_PIXEL_MAP_B_TO_B, 255, colorMap);
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
break;
default:
break;
}
glDrawPixels(img->width,
img->height,
img->format,
GL_UNSIGNED_BYTE,
img->image);
glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
glFlush();
}
void tile_set_draw_tile(struct tile_set *ts, struct tile_texture *tt)
{
if (!tt->texture_valid) {
glGenTextures( 1, &tt->texture_id );
tt->texture_valid = 1;
glPixelTransferi(GL_INDEX_SHIFT, 0);
glPixelTransferi(GL_INDEX_OFFSET, 0);
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
uint8_t *data = (uint8_t*) malloc(tt->tile->width * tt->tile->height);
gridmap_decode_base(data, tt->tile->width, tt->tile->height, tt->tile->data, tt->tile->datalen);
glPixelStorei (GL_UNPACK_ROW_LENGTH, tt->tile->width);
glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
glBindTexture (GL_TEXTURE_2D, tt->texture_id);
glTexImage2D (GL_TEXTURE_2D,
0,
GL_RGBA8,
tt->tile->width, tt->tile->height,
0,
GL_COLOR_INDEX,
GL_UNSIGNED_BYTE,
data);
glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
glBindTexture (GL_TEXTURE_2D, 0);
free(data);
}
glPushAttrib (GL_ENABLE_BIT);
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable (GL_DEPTH_TEST);
glEnable (GL_TEXTURE_2D);
if (ts->r && ts->g && ts->b && ts->a) {
glPixelTransferi(GL_INDEX_SHIFT, 0);
glPixelTransferi(GL_INDEX_OFFSET, 0);
glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, ts->r);
glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, ts->g);
glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, ts->b);
glPixelMapfv(GL_PIXEL_MAP_I_TO_A, 256, ts->a);
}
glPixelStorei (GL_UNPACK_ROW_LENGTH, tt->tile->width);
glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
glBindTexture (GL_TEXTURE_2D, tt->texture_id);
glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
double x0 = tt->tile->x0;
double x1 = tt->tile->x0 + tt->tile->width * tt->tile->meters_per_pixel;
double y0 = tt->tile->y0;
double y1 = tt->tile->y0 + tt->tile->height * tt->tile->meters_per_pixel;
int d = 1;
glBegin (GL_QUADS);
glTexCoord2i (0,0);
glVertex2d (x0, y0);
glTexCoord2i (0, d);
glVertex2d (x0, y1);
glTexCoord2i (d, d);
glVertex2d (x1, y1);
glTexCoord2i (d, 0);
glVertex2d (x1, y0);
glEnd ();
glPixelTransferi(GL_MAP_COLOR, GL_FALSE);
glBindTexture (GL_TEXTURE_2D, 0);
glPopAttrib ();
}