[0.0-42] gl_expand_textures is available if your gfx chip is old

clsave/config.json

@@ -15,6 +15,7 @@
 
 		"antialiasinglevel": 0,
 		"smoothlighting": true,
+		"gl_expand_textures": false,
 		"gl_chunk_size": 16,
 		"gl_visible_chunks": 49,
 		"gl_chunks_tesselated_per_frame": 2,

docs/setup_json.txt

@@ -37,6 +37,10 @@ clsave/config.json:
 		shadows between cubes.
 		Disable for a faster FPS.
 
+		"gl_expand_textures" expands textures to powers of 2 in OpenGL mode
+		This is for backwards-compatibility with old graphics cards.
+		Disable this unless all the text is white or something.
+
 		"gl_chunk_size" sets the size of the map chunks in OpenGL mode
 		The bigger chunks are, the more time it will take to rebuild them when
 		modified.

include/common.h

@@ -19,7 +19,7 @@
 #define VERSION_X 0
 #define VERSION_Y 0
 #define VERSION_A 0
-#define VERSION_Z 41
+#define VERSION_Z 42
 // Remember to bump "Z" basically every time you change the engine!
 // Remember to bump the version in Lua too!
 // Remember to document API changes in a new version!
@@ -436,6 +436,7 @@ extern int screen_cubeshift;
 extern int screen_fullscreen;
 extern int screen_antialiasing_level;
 extern int screen_smooth_lighting;
+extern int gl_expand_textures;
 extern int gl_use_vbo;
 extern int gl_chunk_size;
 extern int gl_visible_chunks;

pkg/base/version.lua

@@ -16,9 +16,9 @@
 ]]
 
 VERSION_ENGINE = {
-	cmp={0,0,0,0,41},
+	cmp={0,0,0,0,42},
-	num=41,
+	num=42,
-	str="0.0-41",
+	str="0.0-42",
 }
 
 VERSION_BUGS = {
@@ -63,5 +63,6 @@ VERSION_BUGS = {
 {intro=38, fix=nil, msg="[OpenGL] Preliminary stutter-reduced rendering (WIP)"},
 {intro=nil, fix=40, msg="[OpenGL] Chunks rendering options not supported in game engine config file"},
 {intro=nil, fix=41, msg="[OpenGL] option to disable VBOs not available"},
+{intro=nil, fix=42, msg="[OpenGL] lack of support for cards w/o non-power-of-2 texture support"},
 }
 

src/gl/render_img.c

@@ -17,6 +17,33 @@
 
 #include "common.h"
 
+void expandtex_gl(int *iw, int *ih)
+{
+	if(gl_expand_textures)
+	{
+		(*iw)--;
+		(*iw) |= (*iw)>>1;
+		(*iw) |= (*iw)>>2;
+		(*iw) |= (*iw)>>4;
+		(*iw) |= (*iw)>>8;
+		(*iw) |= (*iw)>>16;
+		(*iw)++;
+
+		(*ih)--;
+		(*ih) |= (*ih)>>1;
+		(*ih) |= (*ih)>>2;
+		(*ih) |= (*ih)>>4;
+		(*ih) |= (*ih)>>8;
+		(*ih) |= (*ih)>>16;
+		(*ih)++;
+
+		if((*iw) < 64)
+			*iw = 64;
+		if((*ih) < 64)
+			*ih = 64;
+	}
+}
+
 void render_blit_img_toimg(uint32_t *pixels, int width, int height, int pitch,
 	img_t *src, int dx, int dy, int bw, int bh, int sx, int sy, uint32_t color);
 
@@ -24,7 +51,17 @@ void render_blit_img(uint32_t *pixels, int width, int height, int pitch,
 	img_t *src, int dx, int dy, int bw, int bh, int sx, int sy, uint32_t color)
 {
 	if(pixels != screen->pixels)
+	{
+		expandtex_gl(&width, &height);
+		pitch = width;
 		return render_blit_img_toimg(pixels,width,height,pitch,src,dx,dy,bw,bh,sx,sy,color);
+	}
+
+	int iw, ih;
+	iw = src->head.width;
+	ih = src->head.height;
+	expandtex_gl(&iw, &ih);
+
 	// TODO: cache shit so we don't have to constantly upload the same image over and over again
 	glEnable(GL_TEXTURE_2D);
 	if(src->tex_dirty)
@@ -33,7 +70,7 @@ void render_blit_img(uint32_t *pixels, int width, int height, int pitch,
 			glGenTextures(1, &(src->tex));
 		
 		glBindTexture(GL_TEXTURE_2D, src->tex);
-		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, src->head.width, src->head.height, 0, GL_BGRA, GL_UNSIGNED_BYTE, src->pixels);
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, iw, ih, 0, GL_BGRA, GL_UNSIGNED_BYTE, src->pixels);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 
@@ -59,10 +96,10 @@ void render_blit_img(uint32_t *pixels, int width, int height, int pitch,
 	float dx2 = dx+bw;
 	float dy2 = dy+bh;
 
-	float sx1 = (sx)/(float)src->head.width;
+	float sx1 = (sx)/(float)iw;
-	float sx2 = (sx+bw)/(float)src->head.width;
+	float sx2 = (sx+bw)/(float)iw;
-	float sy1 = (sy)/(float)src->head.height;
+	float sy1 = (sy)/(float)ih;
-	float sy2 = (sy+bh)/(float)src->head.height;
+	float sy2 = (sy+bh)/(float)ih;
 	
 	glColor4f(((color>>16)&255)/255.0f,((color>>8)&255)/255.0f,((color)&255)/255.0f,((color>>24)&255)/255.0f);
 	glBegin(GL_QUADS);
@@ -135,10 +172,14 @@ void render_blit_img_toimg(uint32_t *pixels, int width, int height, int pitch,
 		return;
 	
 	// get pointers
+	int iw, ih;
+	iw = src->head.width;
+	ih = src->head.height;
+	expandtex_gl(&iw, &ih);
 	uint32_t *ps = src->pixels;
-	ps = &ps[sx+sy*src->head.width];
+	ps = &ps[sx+sy*iw];
 	uint32_t *pd = &(pixels[dx+dy*pitch]);
-	int spitch = src->head.width - bw;
+	int spitch = iw - bw;
 	int dpitch = pitch - bw;
 	
 	//printf("[%i %i] [%i %i] %016llX %016llX %i %i %08X\n"

src/img.c

@@ -17,6 +17,10 @@
 
 #include "common.h"
 
+#ifdef USE_OPENGL
+void expandtex_gl(int *iw, int *ih);
+#endif
+
 uint32_t img_convert_color_to_32(uint32_t v, int bits)
 {
 	switch(bits)
@@ -76,7 +80,14 @@ img_t *img_parse_tga(int len, const char *data)
 	}
 	
 	// allocate + stash
-	img_t *img = (img_t*)malloc(sizeof(img_t)+4*head.width*head.height);
+	int iw, ih;
+	iw = head.width;
+	ih = head.height;
+#ifdef USE_OPENGL
+	expandtex_gl(&iw, &ih);
+#endif
+	printf("TEX: %i %i\n", iw, ih);
+	img_t *img = (img_t*)malloc(sizeof(img_t)+4*iw*ih);
 	// TODO: check if NULL
 	img->head = head;
 	img->udtype = UD_IMG;
@@ -87,7 +98,7 @@ img_t *img_parse_tga(int len, const char *data)
 	
 	// copy stuff
 	int bplen = ((head.bpp-1)>>3)+1;
-	int idx = (head.flags & 32 ? 0 : head.height-1)*head.width;
+	int idx = (head.flags & 32 ? 0 : head.height-1)*iw;
 	for(y = 0; y < head.height; y++)
 	{
 		if(head.imgtype & 8)
@@ -128,18 +139,19 @@ img_t *img_parse_tga(int len, const char *data)
 			}
 		}
 		
+		idx += iw-head.width;
 		if(!(head.flags & 32))
-			idx -= 2*head.width;
+			idx -= 2*iw;
 	}
 	
 	// convert pixels
 	if((head.imgtype&7) == 1)
 	{
-		for(i = head.width*head.height-1; i >= 0; i--)
+		for(i = iw*ih-1; i >= 0; i--)
 			img->pixels[i] = palette[(img->pixels[i] + head.cmoffs) % head.cmlen];
 		//printf("cm %i %i\n", head.cmoffs, head.cmlen);
 	} else {
-		for(i = head.width*head.height-1; i >= 0; i--)
+		for(i = iw*ih-1; i >= 0; i--)
 			img->pixels[i] = img_convert_color_to_32(img->pixels[i], head.bpp);
 	}
 	

src/lua.c

@@ -347,6 +347,11 @@ int icelua_init(void)
 			if(!lua_isnil(Lc, -1)) gl_use_vbo = v;
 			lua_pop(Lc, 1);
 
+			lua_getfield(Lc, -1, "gl_expand_textures");
+			v = lua_toboolean(Lc, -1);
+			if(!lua_isnil(Lc, -1)) gl_expand_textures = v;
+			lua_pop(Lc, 1);
+
 			lua_getfield(Lc, -1, "gl_chunk_size");
 			v = lua_tointeger(Lc, -1);
 			if(v > 0) gl_chunk_size = v;

src/lua_image.h

@@ -14,6 +14,9 @@
     You should have received a copy of the GNU General Public License
     along with Iceball.  If not, see <http://www.gnu.org/licenses/>.
 */
+#ifdef USE_OPENGL
+void expandtex_gl(int *iw, int *ih);
+#endif
 
 // client functions
 int icelua_fn_client_img_blit(lua_State *L)
@@ -114,11 +117,16 @@ int icelua_fn_common_img_new(lua_State *L)
 	
 	int w = lua_tointeger(L, 1);
 	int h = lua_tointeger(L, 2);
+	int iw = w;
+	int ih = h;
+#ifdef USE_OPENGL
+	expandtex_gl(&iw, &ih);
+#endif
 	
 	if(w < 1 || h < 1)
 		return luaL_error(L, "image too small");
 	
-	img_t *img = (img_t*)malloc(sizeof(img_t)+(w*h*sizeof(uint32_t)));
+	img_t *img = (img_t*)malloc(sizeof(img_t)+(iw*ih*sizeof(uint32_t)));
 	if(img == NULL)
 		return luaL_error(L, "could not allocate memory");
 	
@@ -135,7 +143,7 @@ int icelua_fn_common_img_new(lua_State *L)
 	img->head.bpp = 32;
 	img->head.flags = 0x20;
 	
-	for(i = 0; i < w*h; i++)
+	for(i = 0; i < iw*ih; i++)
 		img->pixels[i] = 0x00000000;
 	
 	img->udtype = UD_IMG;
@@ -161,8 +169,14 @@ int icelua_fn_common_img_pixel_set(lua_State *L)
 	
 	if(x < 0 || y < 0 || x >= img->head.width || y >= img->head.height)
 		return 0;
+
+	int iw = img->head.width;
+	int ih = img->head.height;
+#ifdef USE_OPENGL
+	expandtex_gl(&iw, &ih);
+#endif
 	
-	img->pixels[y*img->head.width+x] = color;
+	img->pixels[y*iw+x] = color;
 #ifdef USE_OPENGL
 	img->tex_dirty = 1;
 #endif
@@ -181,7 +195,12 @@ int icelua_fn_common_img_fill(lua_State *L)
 		return luaL_error(L, "not an image");
 	uint32_t color = lua_tointeger(L, 2);
 	
-	for (i=0; i<(img->head.width*img->head.height); i++)
+	int iw = img->head.width;
+	int ih = img->head.height;
+#ifdef USE_OPENGL
+	expandtex_gl(&iw, &ih);
+#endif
+	for (i=0; i<(iw*ih); i++)
 		img->pixels[i] = color;    
 	
 #ifdef USE_OPENGL

src/main.c

@@ -30,6 +30,7 @@ int screen_cubeshift = 0;
 int screen_fullscreen = 0;
 int screen_antialiasing_level = 0;
 int screen_smooth_lighting = 0;
+int gl_expand_textures = 0;
 int gl_chunk_size = 16;
 int gl_visible_chunks = 49;
 int gl_chunks_tesselated_per_frame = 2;

zipdist.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-export ZIPNAME=nubdist/iceballfornoobs-0.0-41.zip
+export ZIPNAME=nubdist/iceballfornoobs-0.0-42.zip
 
 #zip -r $ZIPNAME *.dll *.exe *.txt *.bat docs/ \
 #	pkg/base/*.lua \