[Piglit] [PATCH 1/4] fbo-3d: fix for non-NPOT

[Marek Olšák]

On Mon, Aug 16, 2010 at 2:46 PM, Luca Barbieri <luca at luca-barbieri.com>wrote:

> fbo-3d is incorrectly computing the texture coordinate in the POT case.
> ---
>  tests/fbo/fbo-3d.c |    6 ++++--
>  1 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/tests/fbo/fbo-3d.c b/tests/fbo/fbo-3d.c
> index 4ecff44..fbd4d3a 100644
> --- a/tests/fbo/fbo-3d.c
> +++ b/tests/fbo/fbo-3d.c
> @@ -50,13 +50,15 @@ float depth_color[NUM_DEPTHS][4] = {
>        {0.0, 1.0, 1.0, 0.0},
>  };
>
> +int pot_depth;
> +
>  static int
>  create_3d_fbo(void)
>  {
>        GLuint tex, fb;
>        GLenum status;
>        int depth;
> -       int pot_depth =
> glutExtensionSupported("GL_ARB_texture_non_power_of_two") ?
> +       pot_depth =
> glutExtensionSupported("GL_ARB_texture_non_power_of_two") ?
>                NUM_DEPTHS: POT_DEPTHS;
>
>        glGenTextures(1, &tex);
> @@ -110,7 +112,7 @@ done:
>  static void
>  draw_depth(int x, int y, int depth)
>  {
> -       float depth_coord = (float)depth / (NUM_DEPTHS - 1);
> +       float depth_coord = (float)depth / (pot_depth - 1);
>
>        glViewport(0, 0, piglit_width, piglit_height);
>        piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
> --
> 1.7.0.4
>
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>

Pushed, thanks.

Marek
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