void
util_test_constant_buffer(struct pipe_context *ctx,
struct pipe_resource *constbuf)
{
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, 0);
cb = util_create_texture2d(ctx->screen, 256, 256,
PIPE_FORMAT_R8G8B8A8_UNORM, 0);
util_set_common_states_and_clear(cso, ctx, cb);
pipe_set_constant_buffer(ctx, PIPE_SHADER_FRAGMENT, 0, constbuf);
/* Fragment shader. */
{
static const char *text = /* I don't like ureg... */
"FRAG\n"
"DCL CONST[0][0]\n"
"DCL OUT[0], COLOR\n"
"MOV OUT[0], CONST[0][0]\n"
"END\n";
struct tgsi_token tokens[1000];
struct pipe_shader_state state;
if (!tgsi_text_translate(text, tokens, ARRAY_SIZE(tokens))) {
puts("Can't compile a fragment shader.");
util_report_result(FAIL);
return;
}
pipe_shader_state_from_tgsi(&state, tokens);
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);
}
/**
* Test TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION.
*
* The viewport state is set as usual, but it should have no effect.
* Clipping should also be disabled.
*
* POSITION.xyz should already be multiplied by 1/w and POSITION.w should
* contain 1/w. By setting w=0, we can test that POSITION.xyz isn't
* multiplied by 1/w (otherwise nothing would be rendered).
*
* TODO: Whether the value of POSITION.w is correctly interpreted as 1/w
* during perspective interpolation is not tested.
*/
static void
tgsi_vs_window_space_position(struct pipe_context *ctx)
{
struct cso_context *cso;
struct pipe_resource *cb;
void *fs, *vs;
bool pass = true;
static const float red[] = {1, 0, 0, 1};
if (!ctx->screen->get_param(ctx->screen,
PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION)) {
util_report_result(SKIP);
return;
}
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);
/* Fragment shader. */
fs = util_make_fragment_passthrough_shader(ctx, TGSI_SEMANTIC_GENERIC,
TGSI_INTERPOLATE_LINEAR, TRUE);
cso_set_fragment_shader_handle(cso, fs);
/* Vertex shader. */
vs = util_set_passthrough_vertex_shader(cso, ctx, true);
/* Draw. */
{
static float vertices[] = {
0, 0, 0, 0, 1, 0, 0, 1,
0, 256, 0, 0, 1, 0, 0, 1,
256, 256, 0, 0, 1, 0, 0, 1,
256, 0, 0, 0, 1, 0, 0, 1,
};
util_set_interleaved_vertex_elements(cso, 2);
util_draw_user_vertex_buffer(cso, vertices, PIPE_PRIM_QUADS, 4, 2);
}
/* Probe pixels. */
pass = pass && util_probe_rect_rgba(ctx, cb, 0, 0,
cb->width0, cb->height0, red);
/* 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);
}
static void
test_texture_barrier(struct pipe_context *ctx, bool use_fbfetch,
unsigned num_samples)
{
struct cso_context *cso;
struct pipe_resource *cb;
struct pipe_sampler_view *view = NULL;
char name[256];
const char *text;
assert(num_samples >= 1 && num_samples <= 8);
util_snprintf(name, sizeof(name), "%s: %s, %u samples", __func__,
use_fbfetch ? "FBFETCH" : "sampler", MAX2(num_samples, 1));
if (!ctx->screen->get_param(ctx->screen, PIPE_CAP_TEXTURE_BARRIER)) {
util_report_result_helper(SKIP, name);
return;
}
if (use_fbfetch &&
!ctx->screen->get_param(ctx->screen, PIPE_CAP_TGSI_FS_FBFETCH)) {
util_report_result_helper(SKIP, name);
return;
}
cso = cso_create_context(ctx, 0);
cb = util_create_texture2d(ctx->screen, 256, 256,
PIPE_FORMAT_R8G8B8A8_UNORM, num_samples);
util_set_common_states_and_clear(cso, ctx, cb);
/* Clear each sample to a different value. */
if (num_samples > 1) {
void *fs =
util_make_fragment_passthrough_shader(ctx, TGSI_SEMANTIC_GENERIC,
TGSI_INTERPOLATE_LINEAR, TRUE);
cso_set_fragment_shader_handle(cso, fs);
/* Vertex shader. */
void *vs = util_set_passthrough_vertex_shader(cso, ctx, false);
for (unsigned i = 0; i < num_samples / 2; i++) {
float value;
/* 2 consecutive samples should have the same color to test MSAA
* compression properly.
*/
if (num_samples == 2) {
value = 0.1;
} else {
/* The average value must be 0.1 */
static const float values[] = {
0.0, 0.2, 0.05, 0.15
};
value = values[i];
}
ctx->set_sample_mask(ctx, 0x3 << (i * 2));
util_draw_fullscreen_quad_fill(cso, value, value, value, value);
}
ctx->set_sample_mask(ctx, ~0);
cso_set_vertex_shader_handle(cso, NULL);
cso_set_fragment_shader_handle(cso, NULL);
ctx->delete_vs_state(ctx, vs);
ctx->delete_fs_state(ctx, fs);
}
if (use_fbfetch) {
/* Fragment shader. */
text = "FRAG\n"
"DCL OUT[0], COLOR[0]\n"
"DCL TEMP[0]\n"
"IMM[0] FLT32 { 0.1, 0.2, 0.3, 0.4}\n"
"FBFETCH TEMP[0], OUT[0]\n"
"ADD OUT[0], TEMP[0], IMM[0]\n"
"END\n";
} else {
struct pipe_sampler_view templ = {{0}};
templ.format = cb->format;
templ.target = cb->target;
templ.swizzle_r = PIPE_SWIZZLE_X;
templ.swizzle_g = PIPE_SWIZZLE_Y;
templ.swizzle_b = PIPE_SWIZZLE_Z;
templ.swizzle_a = PIPE_SWIZZLE_W;
view = ctx->create_sampler_view(ctx, cb, &templ);
ctx->set_sampler_views(ctx, PIPE_SHADER_FRAGMENT, 0, 1, &view);
/* Fragment shader. */
if (num_samples > 1) {
text = "FRAG\n"
"DCL SV[0], POSITION\n"
"DCL SV[1], SAMPLEID\n"
"DCL SAMP[0]\n"
"DCL SVIEW[0], 2D_MSAA, FLOAT\n"
"DCL OUT[0], COLOR[0]\n"
"DCL TEMP[0]\n"
"IMM[0] FLT32 { 0.1, 0.2, 0.3, 0.4}\n"
"F2I TEMP[0].xy, SV[0].xyyy\n"
"MOV TEMP[0].w, SV[1].xxxx\n"
"TXF TEMP[0], TEMP[0], SAMP[0], 2D_MSAA\n"
"ADD OUT[0], TEMP[0], IMM[0]\n"
"END\n";
} else {
text = "FRAG\n"
"DCL SV[0], POSITION\n"
"DCL SAMP[0]\n"
"DCL SVIEW[0], 2D, FLOAT\n"
"DCL OUT[0], COLOR[0]\n"
"DCL TEMP[0]\n"
"IMM[0] FLT32 { 0.1, 0.2, 0.3, 0.4}\n"
"IMM[1] INT32 { 0, 0, 0, 0}\n"
"F2I TEMP[0].xy, SV[0].xyyy\n"
"MOV TEMP[0].zw, IMM[1]\n"
"TXF TEMP[0], TEMP[0], SAMP[0], 2D\n"
"ADD OUT[0], TEMP[0], IMM[0]\n"
"END\n";
}
}
struct tgsi_token tokens[1000];
struct pipe_shader_state state;
if (!tgsi_text_translate(text, tokens, ARRAY_SIZE(tokens))) {
assert(0);
util_report_result_helper(FAIL, name);
return;
}
pipe_shader_state_from_tgsi(&state, tokens);
void *fs = ctx->create_fs_state(ctx, &state);
cso_set_fragment_shader_handle(cso, fs);
/* Vertex shader. */
void *vs = util_set_passthrough_vertex_shader(cso, ctx, false);
if (num_samples > 1 && !use_fbfetch)
ctx->set_min_samples(ctx, num_samples);
for (int i = 0; i < 2; i++) {
ctx->texture_barrier(ctx,
use_fbfetch ? PIPE_TEXTURE_BARRIER_FRAMEBUFFER :
PIPE_TEXTURE_BARRIER_SAMPLER);
util_draw_fullscreen_quad(cso);
}
if (num_samples > 1 && !use_fbfetch)
ctx->set_min_samples(ctx, 1);
/* Probe pixels.
*
* For single sample:
* result = 0.1 (clear) + (0.1, 0.2, 0.3, 0.4) * 2 = (0.3, 0.5, 0.7, 0.9)
*
* For MSAA 4x:
* sample0 = 0.0 (clear) + (0.1, 0.2, 0.3, 0.4) * 2 = (0.2, 0.4, 0.6, 0.8)
* sample1 = sample0
* sample2 = 0.2 (clear) + (0.1, 0.2, 0.3, 0.4) * 2 = (0.4, 0.6, 0.8, 1.0)
* sample3 = sample2
* resolved = sum(sample[0:3]) / 4 = (0.3, 0.5, 0.7, 0.9)
*/
static const float expected[] = {0.3, 0.5, 0.7, 0.9};
bool pass = util_probe_rect_rgba(ctx, cb, 0, 0,
cb->width0, cb->height0, expected);
/* Cleanup. */
cso_destroy_context(cso);
ctx->delete_vs_state(ctx, vs);
ctx->delete_fs_state(ctx, fs);
pipe_sampler_view_reference(&view, NULL);
pipe_resource_reference(&cb, NULL);
util_report_result_helper(pass, name);
}