[Piglit] [PATCH 1/2] shader_runner: Add SSBO buffer initialization command

[Chris Forbes]

I don't think this is correct. The non-indexed binding point (which
BindBuffer, BufferData uses) is distinct from the 0'th indexed binding
point (which BindBuffer{Base,Range} use).

- Chris

On Wed, Sep 30, 2015 at 1:10 PM, Jordan Justen <jordan.l.justen at intel.com>
wrote:

> The command is:
>
>   ssbo <size>
>
> where <size> is the size in bytes to allocate for the SSBO buffer.
>
> This command only sets of a buffer for SSBO index 0.
>
> Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
> ---
>  tests/shaders/shader_runner.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/tests/shaders/shader_runner.c b/tests/shaders/shader_runner.c
> index e8c3aaa..32ac7bd 100644
> --- a/tests/shaders/shader_runner.c
> +++ b/tests/shaders/shader_runner.c
> @@ -113,6 +113,7 @@ GLenum geometry_layout_input_type = GL_TRIANGLES;
>  GLenum geometry_layout_output_type = GL_TRIANGLE_STRIP;
>  GLint geometry_layout_vertices_out = 0;
>  GLuint atomics_bo = 0;
> +GLuint ssbo = 0;
>
>  #define SHADER_TYPES 6
>  static GLuint *subuniform_locations[SHADER_TYPES];
> @@ -2898,6 +2899,13 @@ piglit_display(void)
>                         glShadeModel(GL_SMOOTH);
>                 } else if (string_match("shade model flat", line)) {
>                         glShadeModel(GL_FLAT);
> +               } else if (sscanf(line, "ssbo %d", &x) == 1) {
> +                       GLuint *ssbo_init = calloc(x, 1);
> +                       glGenBuffers(1, &ssbo);
> +                       glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0,
> ssbo);
> +                       glBufferData(GL_SHADER_STORAGE_BUFFER, x,
> +                                    ssbo_init, GL_DYNAMIC_DRAW);
> +                       free(ssbo_init);
>                 } else if (sscanf(line, "texture rgbw %d ( %d", &tex, &w)
> == 2) {
>                         GLenum int_fmt = GL_RGBA;
>                         int num_scanned =
> --
> 2.5.1
>
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