Mercurial > sdl-ios-xcode
view test/testplatform.c @ 5133:ec13e48ee0d9
Fixed bug #1112 (retina display support)
Vittorio Giovara 2011-02-01 02:21:50 PST
with the attached patch, the opengles context will always use the maximum
screensize available; this is particularly useful for supporting retina display
on latest iphone.
please note: Apple documentation warns that using the "upscaled" gl context
actually uses more memory and bandwitdh, so it might be worth to let the user
decide whether to disable it or not, either with a flag or a sdl function...
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 01 Feb 2011 08:54:34 -0800 |
parents | 0ec550f04bbc |
children | 6a65c1fc07af |
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#include <stdio.h> #include "SDL.h" #include "SDL_endian.h" #include "SDL_cpuinfo.h" #include "SDL_assert.h" /* * Watcom C flags these as Warning 201: "Unreachable code" if you just * compare them directly, so we push it through a function to keep the * compiler quiet. --ryan. */ static int badsize(size_t sizeoftype, size_t hardcodetype) { return sizeoftype != hardcodetype; } int TestTypes(SDL_bool verbose) { int error = 0; if (badsize(sizeof(Uint8), 1)) { if (verbose) printf("sizeof(Uint8) != 1, instead = %u\n", (unsigned int)sizeof(Uint8)); ++error; } if (badsize(sizeof(Uint16), 2)) { if (verbose) printf("sizeof(Uint16) != 2, instead = %u\n", (unsigned int)sizeof(Uint16)); ++error; } if (badsize(sizeof(Uint32), 4)) { if (verbose) printf("sizeof(Uint32) != 4, instead = %u\n", (unsigned int)sizeof(Uint32)); ++error; } #ifdef SDL_HAS_64BIT_TYPE if (badsize(sizeof(Uint64), 8)) { if (verbose) printf("sizeof(Uint64) != 8, instead = %u\n", (unsigned int)sizeof(Uint64)); ++error; } #else if (verbose) { printf("WARNING: No 64-bit datatype on this platform\n"); } #endif if (verbose && !error) printf("All data types are the expected size.\n"); return (error ? 1 : 0); } int TestEndian(SDL_bool verbose) { int error = 0; Uint16 value = 0x1234; int real_byteorder; Uint16 value16 = 0xCDAB; Uint16 swapped16 = 0xABCD; Uint32 value32 = 0xEFBEADDE; Uint32 swapped32 = 0xDEADBEEF; #ifdef SDL_HAS_64BIT_TYPE Uint64 value64, swapped64; value64 = 0xEFBEADDE; value64 <<= 32; value64 |= 0xCDAB3412; swapped64 = 0x1234ABCD; swapped64 <<= 32; swapped64 |= 0xDEADBEEF; #endif if (verbose) { printf("Detected a %s endian machine.\n", (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big"); } if ((*((char *) &value) >> 4) == 0x1) { real_byteorder = SDL_BIG_ENDIAN; } else { real_byteorder = SDL_LIL_ENDIAN; } if (real_byteorder != SDL_BYTEORDER) { if (verbose) { printf("Actually a %s endian machine!\n", (real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big"); } ++error; } if (verbose) { printf("Value 16 = 0x%X, swapped = 0x%X\n", value16, SDL_Swap16(value16)); } if (SDL_Swap16(value16) != swapped16) { if (verbose) { printf("16 bit value swapped incorrectly!\n"); } ++error; } if (verbose) { printf("Value 32 = 0x%X, swapped = 0x%X\n", value32, SDL_Swap32(value32)); } if (SDL_Swap32(value32) != swapped32) { if (verbose) { printf("32 bit value swapped incorrectly!\n"); } ++error; } #ifdef SDL_HAS_64BIT_TYPE if (verbose) { #ifdef _MSC_VER printf("Value 64 = 0x%I64X, swapped = 0x%I64X\n", value64, SDL_Swap64(value64)); #else printf("Value 64 = 0x%llX, swapped = 0x%llX\n", value64, SDL_Swap64(value64)); #endif } if (SDL_Swap64(value64) != swapped64) { if (verbose) { printf("64 bit value swapped incorrectly!\n"); } ++error; } #endif return (error ? 1 : 0); } int TestCPUInfo(SDL_bool verbose) { if (verbose) { printf("CPU count: %d\n", SDL_GetCPUCount()); printf("CPU cache line size: %d\n", SDL_GetCPUCacheLineSize()); printf("RDTSC %s\n", SDL_HasRDTSC()? "detected" : "not detected"); printf("MMX %s\n", SDL_HasMMX()? "detected" : "not detected"); printf("MMX Ext %s\n", SDL_HasMMXExt()? "detected" : "not detected"); printf("3DNow %s\n", SDL_Has3DNow()? "detected" : "not detected"); printf("3DNow Ext %s\n", SDL_Has3DNowExt()? "detected" : "not detected"); printf("SSE %s\n", SDL_HasSSE()? "detected" : "not detected"); printf("SSE2 %s\n", SDL_HasSSE2()? "detected" : "not detected"); printf("AltiVec %s\n", SDL_HasAltiVec()? "detected" : "not detected"); } return (0); } int TestAssertions(SDL_bool verbose) { SDL_assert(1); SDL_assert_release(1); SDL_assert_paranoid(1); SDL_assert(0 || 1); SDL_assert_release(0 || 1); SDL_assert_paranoid(0 || 1); #if 0 /* enable this to test assertion failures. */ SDL_assert_release(1 == 2); SDL_assert_release(5 < 4); SDL_assert_release(0 && "This is a test"); #endif return (0); } int main(int argc, char *argv[]) { SDL_bool verbose = SDL_TRUE; int status = 0; if (argv[1] && (SDL_strcmp(argv[1], "-q") == 0)) { verbose = SDL_FALSE; } if (verbose) { printf("This system is running %s\n", SDL_GetPlatform()); } status += TestTypes(verbose); status += TestEndian(verbose); status += TestCPUInfo(verbose); status += TestAssertions(verbose); return status; }