#include <Texture.h>
#include <string.h>
+/**
+ * A structure for keeping track of loaded textures.
+ */
+
struct texture_t {
- char *name;
- GLuint tex;
- dim2 dim;
-} __attribute__ ((packed));
+ std::string name; /**< The file path of the texture. */
+ GLuint tex; /**< The GLuint for the loaded texture. */
+ dim2 dim; /**< The dimensions of the texture. */
+};
-struct index_t{
+struct index_t {
Color color;
int indexx;
int indexy;
};
-struct texture_t *LoadedTexture[256];
-unsigned int LoadedTextureCounter = 0;
+/**
+ * A vector of all loaded textures.
+ *
+ * Should a texture be asked to be loaded twice, loadTexture() can reference
+ * this array and reuse GLuint's to save memory.
+ */
+
+static std::vector<struct texture_t> LoadedTexture;
namespace Texture{
Color pixels[8][4];
- GLuint loadTexture(const char *fileName){
+
+ GLuint loadTexture(std::string fileName){
SDL_Surface *image;
GLuint object = 0;
- for(unsigned int i=0;i<LoadedTextureCounter;i++){
- if(!strcmp(LoadedTexture[i]->name,fileName)){
+ // check if texture is already loaded
+ for(auto &t : LoadedTexture){
+ if(t.name == fileName){
+
#ifdef DEBUG
- DEBUG_printf("Reusing loaded texture for %s\n",fileName);
+ DEBUG_printf("Reusing loaded texture for %s\n", fileName.c_str());
#endif // DEBUG
- return LoadedTexture[i]->tex;
+
+ return t.tex;
}
}
- if(!fileName)
- return 0;
-
- if(!(image = IMG_Load(fileName)))
+ // load SDL_surface of texture
+ if(!(image = IMG_Load(fileName.c_str())))
return 0;
+
#ifdef DEBUG
- DEBUG_printf("Loaded image file: %s\n", fileName);
+ DEBUG_printf("Loaded image file: %s\n", fileName.c_str());
#endif // DEBUG
+ /*
+ * Load texture through OpenGL.
+ */
+
glGenTextures(1,&object); // Turns "object" into a texture
glBindTexture(GL_TEXTURE_2D,object); // Binds "object" to the top of the stack
glPixelStoref(GL_UNPACK_ALIGNMENT,1);
image->pixels
);
- LoadedTexture[LoadedTextureCounter] = new struct texture_t; //(struct texture_t *)malloc(sizeof(struct texture_t));
- LoadedTexture[LoadedTextureCounter]->name = new char[strlen(fileName)+1]; //(char *)malloc(safe_strlen(fileName));
- LoadedTexture[LoadedTextureCounter]->tex = object;
- strcpy(LoadedTexture[LoadedTextureCounter]->name,fileName);
- LoadedTexture[LoadedTextureCounter]->dim.x = image->w;
- LoadedTexture[LoadedTextureCounter]->dim.y = image->h;
- LoadedTextureCounter++;
+ // add texture to LoadedTexture
+ LoadedTexture.push_back((struct texture_t){fileName,object,{image->w,image->h}});
- SDL_FreeSurface(image); // Free the surface
+ // free the SDL_Surface
+ SDL_FreeSurface(image);
return object;
}
- dim2 imageDim(const char *fileName){
- for(unsigned int i=0;i<LoadedTextureCounter;i++){
- if(!strcmp(LoadedTexture[i]->name,fileName)){
- return LoadedTexture[i]->dim;
- }
+ dim2 imageDim(std::string fileName){
+ for(auto &t : LoadedTexture){
+ if(t.name == fileName)
+ return t.dim;
}
return {0,0};
}
void freeTextures(void){
- for(unsigned int i=0;i<LoadedTextureCounter;i++){
- glDeleteTextures(1,&LoadedTexture[i]->tex);
- delete[] LoadedTexture[i]->name;
- delete LoadedTexture[i];
+ while(!LoadedTexture.empty()){
+ glDeleteTextures(1, &LoadedTexture.back().tex);
+ LoadedTexture.pop_back();
}
}
ivec2 ad; /**< Number of pixels to advance cursor. */
} FT_Tex;
-static FT_Tex ftmap[FT_CHAR_COUNT];
+static FT_Tex ftmap16[FT_CHAR_COUNT],
+ ftmap24[FT_CHAR_COUNT],
+ *ftmapptr;
static FT_Library ftl;
static FT_Face ftf;
abort();
}
- fontSize = 0;
- memset(&ftmap, 0, FT_CHAR_COUNT * sizeof(FT_Tex));
+ fontSize = 16;
+
+ //ftmap16 = new FT_Tex[FT_CHAR_COUNT];
+ //ftmap24 = new FT_Tex[FT_CHAR_COUNT];
+
+ memset(&ftmap16, 0, FT_CHAR_COUNT * sizeof(FT_Tex));
+ memset(&ftmap24, 0, FT_CHAR_COUNT * sizeof(FT_Tex));
#ifdef DEBUG
DEBUG_printf("Initialized FreeType2.\n",NULL);
*/
void destroyFonts(void){
+ //delete[] ftmap16;
+ //delete[] ftmap24;
+
FT_Done_Face(ftf);
FT_Done_FreeType(ftl);
*/
void setFontFace(const char *ttf){
- if(FT_New_Face(ftl,ttf,0,&ftf)){
- std::cout<<"Error! Couldn't open "<<ttf<<"."<<std::endl;
+ std::unique_ptr<uint8_t[]> rgbaBuf;
+ size_t rgbaBufSize, ftsize;
+ unsigned int i,j;
+ FT_Error fte;
+
+ if((fte = FT_New_Face(ftl,ttf,0,&ftf))){
+ std::cout<<"Error! Couldn't open "<<ttf<<" (Error "<<fte<<")."<<std::endl;
abort();
}
DEBUG_printf("Using font %s\n",ttf);
#endif // DEBUG
+ /*
+ * Load the font in the two sizes we use, 16px and 24px.
+ */
+
+ ftmapptr = ftmap16;
+ ftsize = 16;
+
+ do{
+ FT_Set_Pixel_Sizes(ftf, 0, ftsize);
+
+ // allocate texture space
+ for(i=0; i < FT_CHAR_COUNT; i++)
+ glGenTextures(1, &ftmapptr[i].tex);
+
+ // Load all characters we expect to use
+ for(i=33; i<126; i++){
+
+ // Load the bitmap for the current character.
+ if(FT_Load_Char(ftf,i,FT_LOAD_RENDER)){
+ std::cout<<"Error! Unsupported character "<<(char)i<<" ("<<i<<")."<<std::endl;
+ abort();
+ }
+
+ /*
+ * Set up the OpenGL texture thing.
+ */
+
+ glBindTexture(GL_TEXTURE_2D, ftmapptr[i-33].tex);
+
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S , GL_CLAMP_TO_EDGE);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T , GL_CLAMP_TO_EDGE);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER , GL_LINEAR );
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER , GL_LINEAR );
+
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+ /*
+ * Convert the bitmap font given to us from FreeType into an RGBA
+ * format, for ease of drawing.
+ */
+
+ rgbaBuf.reset(new uint8_t [(rgbaBufSize = ftf->glyph->bitmap.width * ftf->glyph->bitmap.rows * 4)]);
+ rgbaBufSize /= 4;
+
+ // populate the buffer
+ for(j=0; j < rgbaBufSize; j++){
+ rgbaBuf[j * 4] = rgbaBuf[j * 4 + 1] = rgbaBuf[j * 4 + 2] = 255;
+ rgbaBuf[j * 4 + 3] = ftf->glyph->bitmap.buffer[j] ? 255 : 0;
+ }
+
+ // save important character information
+ ftmapptr[i-33].wh = { (int)ftf->glyph->bitmap.width, (int)ftf->glyph->bitmap.rows };
+ ftmapptr[i-33].bl = { ftf->glyph->bitmap_left, ftf->glyph->bitmap_top };
+ ftmapptr[i-33].ad = { ftf->glyph->advance.x >> 6, ftf->glyph->advance.y >> 6 };
+
+ // do the thing
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, ftf->glyph->bitmap.width, ftf->glyph->bitmap.rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, rgbaBuf.get());
+ rgbaBuf.reset();
+ }
+
+ // repeat for 24px, or exit
+ if(ftmapptr == ftmap16){
+ ftmapptr = ftmap24;
+ ftsize = 24;
+ }else{
+ break;
+ }
+
+ }while(1);
+
+ setFontSize(16);
}
/**
*/
void setFontSize(unsigned int size){
- unsigned int i,j;
-
- std::unique_ptr<uint8_t[]> rgbaBuf;
- size_t rgbaBufSize = 0;
-
- FT_Set_Pixel_Sizes(ftf,0,(fontSize = size));
-
- // delete old characters, make space for new ones
- for(i=0; i < FT_CHAR_COUNT; i++){
- glDeleteTextures(1, &ftmap[i].tex);
- glGenTextures(1, &ftmap[i].tex);
- }
-
- // Load all characters we expect to use
- for(i=33;i<126;i++){
-
- // Load the bitmap for the current character.
- if(FT_Load_Char(ftf,i,FT_LOAD_RENDER)){
- std::cout<<"Error! Unsupported character "<<(char)i<<" ("<<i<<")."<<std::endl;
- abort();
- }
-
- /*
- * Set up the OpenGL texture thing.
- */
-
- glBindTexture(GL_TEXTURE_2D, ftmap[i-33].tex);
-
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S , GL_CLAMP_TO_EDGE);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T , GL_CLAMP_TO_EDGE);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER , GL_LINEAR );
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER , GL_LINEAR );
-
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-
- /*
- * Convert the bitmap font given to us from FreeType into an RGBA
- * format, for ease of drawing.
- */
-
- rgbaBuf.reset(new uint8_t [(rgbaBufSize = ftf->glyph->bitmap.width * ftf->glyph->bitmap.rows * 4)]);
- rgbaBufSize /= 4;
-
- // populate the buffer
- for(j=0; j < rgbaBufSize; j++){
- rgbaBuf[j * 4 ] =
- rgbaBuf[j * 4 + 1] =
- rgbaBuf[j * 4 + 2] = 255;
- rgbaBuf[j * 4 + 3] = ftf->glyph->bitmap.buffer[j] ? 255 : 0;
- }
-
- // save important character information
- ftmap[i-33].wh = { (int)ftf->glyph->bitmap.width, (int)ftf->glyph->bitmap.rows };
- ftmap[i-33].bl = { ftf->glyph->bitmap_left, ftf->glyph->bitmap_top };
- ftmap[i-33].ad = { ftf->glyph->advance.x >> 6, ftf->glyph->advance.y >> 6 };
-
- // do the thing
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, ftf->glyph->bitmap.width, ftf->glyph->bitmap.rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, rgbaBuf.get());
-
- rgbaBuf.release();
+ switch((fontSize = size)){
+ case 24:
+ ftmapptr = ftmap24;
+ break;
+ default:
+ case 16:
+ ftmapptr = ftmap16;
+ break;
}
}
ivec2 c1,c2;
// calculate coordinates
- c1 = { (int)floor(x) + ftmap[c-33].bl.x,
- (int)floor(y) + ftmap[c-33].bl.y };
- c2 = ftmap[c-33].wh;
+ c1 = { (int)floor(x) + ftmapptr[c-33].bl.x,
+ (int)floor(y) + ftmapptr[c-33].bl.y };
+ c2 = ftmapptr[c-33].wh;
/*
* Draw the character
*/
glEnable(GL_TEXTURE_2D);
- glBindTexture(GL_TEXTURE_2D, ftmap[c-33].tex);
+ glBindTexture(GL_TEXTURE_2D, ftmapptr[c-33].tex);
glPushMatrix();
glTranslatef(0,-c2.y,0);
glDisable(GL_TEXTURE_2D);
// return the number of pixels the cursor should move
- return ftmap[c-33].ad;
+ return ftmapptr[c-33].ad;
}
/**
// handle everything else
}else
- width += ftmap[i].wh.x + fontSize * .1;
+ width += ftmapptr[i].wh.x + fontSize * .1;
}while(s[++i]);
projects / clyne / gamedev.git / commitdiff