added test for glCopyImageSubData, run with -copytest

diff --git a/main.c b/main.c
index 497dc40..0ab34fe 100644 (file)
--- a/main.c
+++ b/main.c
@@ -25,9 +25,9 @@ unsigned char *load_compressed_image(const char *fname, int *cszptr, int *xszptr
 int dump_compressed_image(const char *fname, unsigned char *data, int size, int w, int h);
 void print_compressed_formats(void);
 
-unsigned int tex, comp_tex;
+unsigned int tex, tex2, comp_tex;
 const char *texfile;
-int subtest;
+int subtest, copytest;
 
 int main(int argc, char **argv)
 {
@@ -41,6 +41,8 @@ int main(int argc, char **argv)
                if(argv[i][0] == '-') {
                        if(strcmp(argv[i], "-subtest") == 0) {
                                subtest = 1;
+                       } else if(strcmp(argv[i], "-copytest") == 0) {
+                               copytest = 1;
                        } else {
                                fprintf(stderr, "invalid option: %s\n", argv[i]);
                                return 1;
@@ -50,7 +52,7 @@ int main(int argc, char **argv)
                                fprintf(stderr, "unexpected argument: %s\n", argv[i]);
                                return 1;
                        }
-                       texfile = argv[1];
+                       texfile = argv[i];
                }
        }
 
@@ -139,11 +141,28 @@ int init(void)
        }
 
        if(subtest) {
+               printf("testing glGetCompressedTextureSubImage and glCompressedTexSubImage2D\n");
                memset(buf, 0, comp_size);
                glGetCompressedTextureSubImage(tex, 0, 192, 64, 0, 64, 64, 1, comp_size, buf);
                glCompressedTexSubImage2D(GL_TEXTURE_2D, 0, 32, 32, 64, 64, COMP_FMT, 2048, buf);
        }
 
+       if(copytest) {
+               printf("testing glCopyImageSubData\n");
+
+               glGenTextures(1, &tex2);
+               glBindTexture(GL_TEXTURE_2D, tex2);
+               glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+               glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+               glCompressedTexImage2D(GL_TEXTURE_2D, 0, COMP_FMT, xsz, ysz, 0, comp_size, pixels);
+               glBindTexture(GL_TEXTURE_2D, 0);
+
+               glCopyImageSubData(tex2, GL_TEXTURE_2D, 0, 128, 64, 0,
+                               tex, GL_TEXTURE_2D, 0, 32, 32, 0, 64, 64, 1);
+
+               glBindTexture(GL_TEXTURE_2D, tex);
+       }
+
        free(buf);
        free(pixels);
 
@@ -380,11 +399,10 @@ void print_compressed_formats(void)
        glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, fmtlist);
 
        for(i=0; i<num_fmt; i++) {
-               printf("\n");
-               printf(" %05x: %s\n", fmtlist[i], fmtstr(fmtlist[i]));
+               printf(" %05x: %s ", fmtlist[i], fmtstr(fmtlist[i]));
                GLint params;
                glGetInternalformativ(GL_TEXTURE_2D, fmtlist[i], GL_TEXTURE_COMPRESSED, 1, &params);
-               printf("the format is %s\n", params == GL_TRUE ? "compressed" : "not compressed");
+               printf("(%s format)\n", params == GL_TRUE ? "compressed" : "not compressed");
        }
        free(fmtlist);
 }