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gallium/u_tests: test a NULL constant buffer

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This expects (0,0,0,0), though it can be changed to something else or allow
more than one set of values to be considered correct.

This is currently the radeonsi behavior.

Reviewed-by: Glenn Kennard <glenn.kennard@gmail.com>
This commit is contained in:
Marek Olšák 2015-02-01 13:11:49 +01:00
parent 9e8a6d8486
commit 56e709bffb
1 changed files with 57 additions and 0 deletions
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57
src/gallium/auxiliary/util/u_tests.c
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@ -30,9 +30,11 @@
#include "util/u_draw_quad.h"
#include "util/u_format.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "util/u_simple_shaders.h"
#include "util/u_surface.h"
#include "util/u_tile.h"
#include "tgsi/tgsi_text.h"
#include "cso_cache/cso_context.h"
#include <stdio.h>
@ -371,6 +373,60 @@ null_sampler_view(struct pipe_context *ctx)
util_report_result(pass);
}
static void
null_constant_buffer(struct pipe_context *ctx)
{
struct cso_context *cso;
struct pipe_resource *cb;
void *fs, *vs;
bool pass = true;
static const float zero[] = {0, 0, 0, 0};
cso = cso_create_context(ctx);
cb = util_create_texture2d(ctx->screen, 256, 256,
PIPE_FORMAT_R8G8B8A8_UNORM);
util_set_common_states_and_clear(cso, ctx, cb);
ctx->set_constant_buffer(ctx, PIPE_SHADER_FRAGMENT, 0, NULL);
/* Fragment shader. */
{
static const char *text = /* I don't like ureg... */
"FRAG\n"
"DCL CONST[0]\n"
"DCL OUT[0], COLOR\n"
"MOV OUT[0], CONST[0]\n"
"END\n";
struct tgsi_token tokens[1000];
struct pipe_shader_state state = {tokens};
if (!tgsi_text_translate(text, tokens, Elements(tokens))) {
puts("Can't compile a fragment shader.");
util_report_result(FAIL);
return;
}
fs = ctx->create_fs_state(ctx, &state);
cso_set_fragment_shader_handle(cso, fs);
}
/* Vertex shader. */
vs = util_set_passthrough_vertex_shader(cso, ctx, false);
util_draw_fullscreen_quad(cso);
/* Probe pixels. */
pass = pass && util_probe_rect_rgba(ctx, cb, 0, 0, cb->width0,
cb->height0, zero);
/* Cleanup. */
cso_destroy_context(cso);
ctx->delete_vs_state(ctx, vs);
ctx->delete_fs_state(ctx, fs);
pipe_resource_reference(&cb, NULL);
util_report_result(pass);
}
/**
* Run all tests. This should be run with a clean context after
* context_create.
@ -382,6 +438,7 @@ util_run_tests(struct pipe_screen *screen)
tgsi_vs_window_space_position(ctx);
null_sampler_view(ctx);
null_constant_buffer(ctx);
ctx->destroy(ctx);