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-rw-r--r--progs/demos/readpix.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/progs/demos/readpix.c b/progs/demos/readpix.c
index 75ba45c1e5..c0aac2272f 100644
--- a/progs/demos/readpix.c
+++ b/progs/demos/readpix.c
@@ -29,33 +29,32 @@ static GLboolean ScaleAndBias = GL_FALSE;
static GLboolean Benchmark = GL_FALSE;
static GLubyte *TempImage = NULL;
-#if 0
+#define COMBO 1
+#if COMBO == 0
#define ReadFormat ImgFormat
#define ReadType GL_UNSIGNED_BYTE
-#endif
-#if 1
+#elif COMBO == 1
static GLenum ReadFormat = GL_RGBA;
static GLenum ReadType = GL_UNSIGNED_BYTE;
-#endif
-#if 0
+#elif COMBO == 2
static GLenum ReadFormat = GL_RGB;
static GLenum ReadType = GL_UNSIGNED_BYTE;
-#endif
-#if 0
+#elif COMBO == 3
static GLenum ReadFormat = GL_RGB;
static GLenum ReadType = GL_UNSIGNED_SHORT_5_6_5;
-#endif
-#if 0
+#elif COMBO == 4
static GLenum ReadFormat = GL_RGBA;
static GLenum ReadType = GL_UNSIGNED_SHORT_1_5_5_5_REV;
-#endif
-#if 0
+#elif COMBO == 5
static GLenum ReadFormat = GL_BGRA;
static GLenum ReadType = GL_UNSIGNED_SHORT_5_5_5_1;
-#endif
-#if 0
+#elif COMBO == 6
static GLenum ReadFormat = GL_BGRA;
static GLenum ReadType = GL_UNSIGNED_SHORT_4_4_4_4_REV;
+#elif COMBO == 7
+static GLenum ReadFormat = GL_RGBA;
+static GLenum ReadType = GL_HALF_FLOAT_ARB;
+#undef GL_OES_read_format
#endif
@@ -313,8 +312,10 @@ Init( GLboolean ciMode )
Reset();
- /* allocate an extra 1KB in case we're tinkering with pack alignment */
- TempImage = (GLubyte *) malloc(ImgWidth * ImgHeight * 4 * sizeof(GLubyte)
+ /* allocate large TempImage to store and image data type, plus an
+ * extra 1KB in case we're tinkering with pack alignment.
+ */
+ TempImage = (GLubyte *) malloc(ImgWidth * ImgHeight * 4 * 4
+ 1000);
assert(TempImage);
}