* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+
+/*
+ Version 1.0.001 - 4-10-2004
+
+ - Added support for 16, 24 and 32 bit textures * new *;
+ - Added support for 16, 24 and 32 bit texture rendering *new*;
+
+*/
#include "sdlemu_opengl.h"
static GLuint texid = 0;
static GLfloat texcoord[4];
static unsigned int glFilter;
+static unsigned int texturebpp = 0; // 16, 24 or 32 bpp
static inline int power_of_two(int input)
{
return value;
}
-void sdlemu_init_opengl(SDL_Surface * src, int texturetype, float size, int filter)
+void sdlemu_init_opengl(SDL_Surface * src, int texturetype, float size, int filter, int src_bpp)
{
int w, h;
-
+ Uint32 rmask, gmask, bmask, amask;
+
+ // We allow the developer to set its own texture bpp. But if the value is NULL or
+ // not equal to 16, 24 or 32, we make the texturebpp the same as the BPP from src.
+ if ( (src_bpp != NULL) && ( (src_bpp == 16) || (src_bpp == 24) || (src_bpp == 32) ) )
+ texturebpp = src_bpp;
+ else
+ texturebpp = src->format->BitsPerPixel;
+
printf("\nOpenGL driver information :\n");
printf("\n");
- printf("Vendor: %s\n", glGetString(GL_VENDOR));
- printf("Renderer: %s\n", glGetString(GL_RENDERER));
- printf("Version: %s\n", glGetString(GL_VERSION));
+ printf("Vendor: %s\n", glGetString(GL_VENDOR));
+ printf("Renderer: %s\n", glGetString(GL_RENDERER));
+ printf("Version: %s\n", glGetString(GL_VERSION));
+ printf("OpenGL Texture BPP: %d\n", texturebpp);
printf("OpenGL drawmethod: ");
switch (texturetype)
// Texture width/height should be power of 2
// So, find the largest power of two that will contain both the width and height
- w = power_of_two(src->w);
- h = power_of_two(src->h);
+ // w = power_of_two(src->w);
+ // h = power_of_two(src->h);
+ w = 512;
+ h = 512;
+
+ switch ( texturebpp )
+ {
+ case 16:
+ #if SDL_BYTEORDER == SDL_BIG_ENDIAN
+
+// rmask = 0xff000000;
+// gmask = 0x00ff0000;
+// bmask = 0x0000ff00;
+// amask = 0x00000000;
+
+ rmask = 0x0000;
+ gmask = 0x0000;
+ bmask = 0x0000;
+ amask = 0x0000;
+
+ #else
+
+// rmask = 0x000000ff;
+// gmask = 0x0000ff00;
+// bmask = 0x00ff0000;
+// amask = 0x00000000;
+
+ rmask = 0x0000;
+ gmask = 0x0000;
+ bmask = 0x0000;
+ amask = 0x0000;
+
+ #endif
+
+ break;
+ case 24:
+ #if SDL_BYTEORDER == SDL_BIG_ENDIAN
+ rmask = 0x00ff0000;
+ gmask = 0x0000ff00;
+ bmask = 0x000000ff;
+ amask = 0x00000000;
+ #else
+ rmask = 0x000000ff;
+ gmask = 0x0000ff00;
+ bmask = 0x00ff0000;
+ amask = 0x00000000;
+ #endif
+ break;
+ case 32:
+ default:
+ #if SDL_BYTEORDER == SDL_BIG_ENDIAN
+ rmask = 0xff000000;
+ gmask = 0x00ff0000;
+ bmask = 0x0000ff00;
+ amask = 0x000000ff;
+ #else
+ rmask = 0x000000ff;
+ gmask = 0x0000ff00;
+ bmask = 0x00ff0000;
+ amask = 0xff000000;
+ #endif
+ break;
+ }
// create texture surface
- texture = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32,
- #if SDL_BYTEORDER == SDL_LIL_ENDIAN
+ texture = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, texturebpp, rmask, gmask, bmask, amask);
+/*
+ #if SDL_BYTEORDER == SDL_LIL_ENDIAN
0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
#else
0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF);
#endif
+*/
// setup 2D gl environment
- glPushAttrib(GL_ENABLE_BIT);
- glDisable(GL_DEPTH_TEST);
+ //glPushAttrib(GL_ENABLE_BIT);
+ //glDisable(GL_DEPTH_TEST);
+ //glDisable(GL_CULL_FACE);
+ //glEnable(GL_TEXTURE_2D);
+
+ glDisable(GL_FOG);
+ glDisable(GL_LIGHTING);
glDisable(GL_CULL_FACE);
+ glDisable(GL_DEPTH_TEST);
+ glDisable(GL_BLEND);
+ glDisable(GL_NORMALIZE);
+ glDisable(GL_ALPHA_TEST);
glEnable(GL_TEXTURE_2D);
+ glBlendFunc (GL_SRC_ALPHA, GL_ONE);
glViewport(0, 0, src->w * size, src->h * size);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
+
+ switch ( texturebpp )
+ {
+ case 16:
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB5, texture->w, texture->h, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+ break;
+ case 24:
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, texture->w, texture->h, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+ break;
+ case 32:
+ default:
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, texture->w, texture->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+ break;
+ }
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture->w, texture->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture->pixels);
}
void sdlemu_draw_texture(SDL_Surface * dst, SDL_Surface * src, int texturetype)
{
+ //SDL_Rect rect = { 0, 0, src->w, src->h };
// convert color-indexed surface to RGB texture
+ //SDL_BlitSurface(src, &rect, texture, &rect);
+ //glFlush();
+
SDL_BlitSurface(src, NULL, texture, NULL);
+// printf("Rmask - src : %d\n", src->format->Rmask);
+// printf("Gmask - src : %d\n", src->format->Gmask);
+// printf("Bmask - src : %d\n", src->format->Bmask);
+// printf("Amask - src : %d\n", src->format->Amask);
+
+// printf("Rmask - texture : %d\n", texture->format->Rmask);
+// printf("Gmask - texture : %d\n", texture->format->Gmask);
+// printf("Bmask - texture : %d\n", texture->format->Bmask);
+// printf("Amask - texture : %d\n", texture->format->Amask);
+
// Texturemap complete texture to surface so we have free scaling
- // and antialiasing
- glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, texture->w, texture->h,
- GL_RGBA, GL_UNSIGNED_BYTE, texture->pixels);
+ // and antialiasing
+ switch ( texturebpp )
+ {
+ case 16:
+ // GL_UNSIGNED_SHORT_5_6_5
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, texture->w, texture->h,
+ GL_RGB, GL_UNSIGNED_SHORT_5_6_5, texture->pixels);
+ break;
+ case 24:
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, texture->w, texture->h,
+ GL_RGB, GL_UNSIGNED_BYTE, texture->pixels);
+ break;
+ case 32:
+ default:
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, texture->w, texture->h,
+ GL_RGBA, GL_UNSIGNED_BYTE, texture->pixels);
+ break;
+ }
switch (texturetype)
{
glTexCoord2f(texcoord[2], texcoord[3]); glVertex3i(dst->w, dst->h, 0);
glEnd();
}
-
+
+// glFlush();
SDL_GL_SwapBuffers();
+// glFinish();
+
}
void sdlemu_close_opengl(void)
// but, at the moment, it doesn't...
// Now it does...!
//
-void sdlemu_resize_texture(SDL_Surface * src, SDL_Surface * dst, int filter)
+void sdlemu_resize_texture(SDL_Surface * src, SDL_Surface * dst, int filter, int src_bpp)
{
// Texture width/height should be power of 2
// So, find the largest power of two that will contain both the width and height
- int w = power_of_two(src->w), h = power_of_two(src->h);
-
+ //int w = power_of_two(src->w), h = power_of_two(src->h);
+ int w = 512, h = 512;
+ Uint32 rmask, gmask, bmask, amask;
+
+ // We allow the developer to set its own texture bpp. But if the value is NULL or
+ // not equal to 16, 24 or 32, we make the texturebpp the same as the BPP from src.
+ if ( (src_bpp != NULL) && ( (src_bpp == 16) || (src_bpp == 24) || (src_bpp == 32) ) )
+ texturebpp = src_bpp;
+ else
+ texturebpp = src->format->BitsPerPixel;
+
// Delete old texture (if allocated)
if (texture)
SDL_FreeSurface(texture);
// create texture surface
-//NOTE: Seems the byte order here *is* important! (Perhaps only for 32 BPP?)
- texture = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32,
+ //NOTE: Seems the byte order here *is* important! (Perhaps only for 32 BPP?)
+ //
+ // NOTE : Nope! Not any more. We can now producte textures based upon 16, 24 or 32 bpp.
+ switch ( texturebpp )
+ {
+ case 16:
+ #if SDL_BYTEORDER == SDL_BIG_ENDIAN
+
+// rmask = 0xff000000;
+// gmask = 0x00ff0000;
+// bmask = 0x0000ff00;
+// amask = 0x00000000;
+
+ rmask = 0x0000;
+ gmask = 0x0000;
+ bmask = 0x0000;
+ amask = 0x0000;
+
+ #else
+
+// rmask = 0x000000ff;
+// gmask = 0x0000ff00;
+// bmask = 0x00ff0000;
+// amask = 0x00000000;
+
+ rmask = 0x0000;
+ gmask = 0x0000;
+ bmask = 0x0000;
+ amask = 0x0000;
+
+ #endif
+ break;
+ case 24:
+ #if SDL_BYTEORDER == SDL_BIG_ENDIAN
+ rmask = 0x00ff0000;
+ gmask = 0x0000ff00;
+ bmask = 0x000000ff;
+ amask = 0x00000000;
+ #else
+ rmask = 0x000000ff;
+ gmask = 0x0000ff00;
+ bmask = 0x00ff0000;
+ amask = 0x00000000;
+ #endif
+ break;
+ case 32:
+ default:
+ #if SDL_BYTEORDER == SDL_BIG_ENDIAN
+ rmask = 0xff000000;
+ gmask = 0x00ff0000;
+ bmask = 0x0000ff00;
+ amask = 0x000000ff;
+ #else
+ rmask = 0x000000ff;
+ gmask = 0x0000ff00;
+ bmask = 0x00ff0000;
+ amask = 0xff000000;
+ #endif
+ break;
+ }
+
+ // create texture surface
+ texture = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, texturebpp, rmask, gmask, bmask, amask);
+/*
+ #if SDL_BYTEORDER == SDL_LIL_ENDIAN
+ 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
+ #else
+ 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF);
+ #endif
+*/
+
+
+/*
+ texture = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
#else
0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF);
#endif
-
+*/
// setup 2D gl environment
- glPushAttrib(GL_ENABLE_BIT);
- glDisable(GL_DEPTH_TEST);
+ //glPushAttrib(GL_ENABLE_BIT);
+ //glDisable(GL_DEPTH_TEST);
+ //glDisable(GL_CULL_FACE);
+ //glEnable(GL_TEXTURE_2D);
+
+ glDisable(GL_FOG);
+ glDisable(GL_LIGHTING);
glDisable(GL_CULL_FACE);
+ glDisable(GL_DEPTH_TEST);
+ glDisable(GL_BLEND);
+ glDisable(GL_NORMALIZE);
+ glDisable(GL_ALPHA_TEST);
glEnable(GL_TEXTURE_2D);
+ glBlendFunc (GL_SRC_ALPHA, GL_ONE);
glViewport(0, 0, dst->w, dst->h);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture->w, texture->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture->pixels);
+ switch ( texturebpp )
+ {
+ case 16:
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB5, texture->w, texture->h, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+ break;
+ case 24:
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, texture->w, texture->h, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+ break;
+ case 32:
+ default:
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, texture->w, texture->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+ break;
+ }
+
+ //glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, texture->w, texture->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
}
projects / virtualjaguar / blobdiff