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- Log -----------------------------------------------------------------
commit 46ed1d5353edae37064e3154d4ad8e5ee4bae2bc
Author: Lawrence Sebald <ljs...@us...>
Date: Wed Sep 9 10:39:22 2015 -0400
Don't allocate texture conversion space on the stack, as it is likely to overflow the stack and corrupt heap memory.
-----------------------------------------------------------------------
Summary of changes:
gl-texture.c | 33 +++++++++++++++------------------
1 files changed, 15 insertions(+), 18 deletions(-)
diff --git a/gl-texture.c b/gl-texture.c
index 325843d..fa5a3ef 100755
--- a/gl-texture.c
+++ b/gl-texture.c
@@ -264,48 +264,45 @@ void APIENTRY glTexImage2D(GLenum target, GLint level, GLint internalFormat,
case GL_UNSIGNED_SHORT:
case GL_FLOAT:
{
- uint16 tex[width * height];
-
+ uint16 *tex;
+
+ tex = (uint16 *)malloc(width * height * sizeof(uint16));
+ if(!tex) {
+ _glKosThrowError(GL_OUT_OF_MEMORY, "glTexImage2D");
+ _glKosPrintError();
+ return;
+ }
+
switch(internalFormat)
{
case GL_RGB:
-
_glPixelConvertRGB(type, width, height, (void *)data, tex);
-
GL_KOS_TEXTURE_UNIT[GL_KOS_ACTIVE_TEXTURE]->color = (PVR_TXRFMT_RGB565 | PVR_TXRFMT_NONTWIDDLED);
-
sq_cpy(GL_KOS_TEXTURE_UNIT[GL_KOS_ACTIVE_TEXTURE]->data, tex, bytes);
-
break;
case GL_RGBA:
-
_glPixelConvertRGBA(type, width, height, (void *)data, tex);
-
GL_KOS_TEXTURE_UNIT[GL_KOS_ACTIVE_TEXTURE]->color = (PVR_TXRFMT_ARGB4444 | PVR_TXRFMT_NONTWIDDLED);
-
sq_cpy(GL_KOS_TEXTURE_UNIT[GL_KOS_ACTIVE_TEXTURE]->data, tex, bytes);
-
break;
}
+
+ free(tex);
}
break;
-
+
case GL_UNSIGNED_SHORT_5_6_5: /* Texture Formats that do not need conversion */
- case GL_UNSIGNED_SHORT_5_6_5_TWID:
- case GL_UNSIGNED_SHORT_1_5_5_5:
+ case GL_UNSIGNED_SHORT_5_6_5_TWID:
+ case GL_UNSIGNED_SHORT_1_5_5_5:
case GL_UNSIGNED_SHORT_1_5_5_5_TWID:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_TWID:
-
sq_cpy(GL_KOS_TEXTURE_UNIT[GL_KOS_ACTIVE_TEXTURE]->data, data, bytes);
-
break;
-
+
default: /* Unsupported Texture Format */
-
_glKosThrowError(GL_INVALID_OPERATION, "glTexImage2D");
-
break;
}
}
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