OpenHarmony/third_party_mesa3d
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Allow glTexImage1/2/3D to specify width/height/depth = 0.

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This allows texture state to be resettable to default state.
Not allowed according to the spec, but allowed by all other OpenGL libs.
This commit is contained in:
Brian Paul
2003-09-12 15:03:12 +00:00
parent 5c480a4887
commit 973da83f62
4 changed files with 21 additions and 11 deletions
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12
src/mesa/main/teximage.c
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@@ -105,7 +105,7 @@ static void PrintTexture(GLcontext *ctx, const struct gl_texture_image *img)
/*
* Compute floor(log_base_2(n)).
* If n <= 0 return -1.
* If n < 0 return -1.
*/
static int
logbase2( int n )
@@ -113,9 +113,11 @@ logbase2( int n )
GLint i = 1;
GLint log2 = 0;
if (n <= 0) {
if (n < 0)
return -1;
}
if (n == 0)
return 0;
while ( n > i ) {
i *= 2;
@@ -1094,10 +1096,10 @@ texture_error_check( GLcontext *ctx, GLenum target,
return GL_TRUE;
}
if (width < 1 || height < 1 || depth < 1) {
if (width < 0 || height < 0 || depth < 0) {
if (!isProxy) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(width, height or depth < 1)", dimensions);
"glTexImage%dD(width, height or depth < 0)", dimensions);
}
return GL_TRUE;
}