/**
* Set renderer fragment shader.
*
* This function modifies fragment_shader state.
*/
static void renderer_set_fs(struct renderer *r, RendererFs id)
{
/* create as needed */
if (!r->cached_fs[id]) {
void *fs = NULL;
switch (id) {
case RENDERER_FS_COLOR:
fs = util_make_fragment_passthrough_shader(r->pipe,
TGSI_SEMANTIC_COLOR, TGSI_INTERPOLATE_PERSPECTIVE,
TRUE);
break;
case RENDERER_FS_TEXTURE:
fs = util_make_fragment_tex_shader(r->pipe,
TGSI_TEXTURE_2D, TGSI_INTERPOLATE_LINEAR);
break;
case RENDERER_FS_SCISSOR:
fs = create_scissor_fs(r->pipe);
break;
case RENDERER_FS_WHITE:
fs = create_white_fs(r->pipe);
break;
default:
assert(!"Unknown renderer fs id");
break;
}
r->cached_fs[id] = fs;
}
cso_set_fragment_shader_handle(r->cso, r->cached_fs[id]);
}
static void
null_sampler_view(struct pipe_context *ctx, unsigned tgsi_tex_target)
{
struct cso_context *cso;
struct pipe_resource *cb;
void *fs, *vs;
bool pass = true;
/* 2 expected colors: */
static const float expected_tex[] = {0, 0, 0, 1,
0, 0, 0, 0};
static const float expected_buf[] = {0, 0, 0, 0};
const float *expected = tgsi_tex_target == TGSI_TEXTURE_BUFFER ?
expected_buf : expected_tex;
unsigned num_expected = tgsi_tex_target == TGSI_TEXTURE_BUFFER ? 1 : 2;
if (tgsi_tex_target == TGSI_TEXTURE_BUFFER &&
!ctx->screen->get_param(ctx->screen, PIPE_CAP_TEXTURE_BUFFER_OBJECTS)) {
util_report_result_helper(SKIP, "%s: %s", __func__,
tgsi_texture_names[tgsi_tex_target]);
return;
}
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);
ctx->set_sampler_views(ctx, PIPE_SHADER_FRAGMENT, 0, 1, NULL);
/* Fragment shader. */
fs = util_make_fragment_tex_shader(ctx, tgsi_tex_target,
TGSI_INTERPOLATE_LINEAR,
TGSI_RETURN_TYPE_FLOAT,
TGSI_RETURN_TYPE_FLOAT, false, false);
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_multi(ctx, cb, 0, 0,
cb->width0, cb->height0, expected,
num_expected);
/* 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_helper(pass, "%s: %s", __func__,
tgsi_texture_names[tgsi_tex_target]);
}
static INLINE
void *blitter_get_fs_texfetch_col(struct blitter_context_priv *ctx,
unsigned tex_target)
{
struct pipe_context *pipe = ctx->base.pipe;
assert(tex_target < PIPE_MAX_TEXTURE_TYPES);
/* Create the fragment shader on-demand. */
if (!ctx->fs_texfetch_col[tex_target]) {
unsigned tgsi_tex = pipe_tex_to_tgsi_tex(tex_target);
ctx->fs_texfetch_col[tex_target] =
util_make_fragment_tex_shader(pipe, tgsi_tex, TGSI_INTERPOLATE_LINEAR);
}
return ctx->fs_texfetch_col[tex_target];
}
/**
* Helper function to set the fragment shaders.
*/
static INLINE void
set_fragment_shader(struct gen_mipmap_state *ctx, uint type,
boolean output_depth)
{
if (output_depth) {
if (!ctx->fs_depth[type])
ctx->fs_depth[type] =
util_make_fragment_tex_shader_writedepth(ctx->pipe, type,
TGSI_INTERPOLATE_LINEAR);
cso_set_fragment_shader_handle(ctx->cso, ctx->fs_depth[type]);
}
else {
if (!ctx->fs_color[type])
ctx->fs_color[type] =
util_make_fragment_tex_shader(ctx->pipe, type,
TGSI_INTERPOLATE_LINEAR);
cso_set_fragment_shader_handle(ctx->cso, ctx->fs_color[type]);
}
}
static void init_prog(struct program *p)
{
struct pipe_surface surf_tmpl;
int ret;
/* find a hardware device */
ret = pipe_loader_probe(&p->dev, 1);
assert(ret);
/* init a pipe screen */
p->screen = pipe_loader_create_screen(p->dev, PIPE_SEARCH_DIR);
assert(p->screen);
/* create the pipe driver context and cso context */
p->pipe = p->screen->context_create(p->screen, NULL);
p->cso = cso_create_context(p->pipe);
/* set clear color */
p->clear_color.f[0] = 0.3;
p->clear_color.f[1] = 0.1;
p->clear_color.f[2] = 0.3;
p->clear_color.f[3] = 1.0;
/* vertex buffer */
{
float vertices[4][2][4] = {
{
{ 0.9f, 0.9f, 0.0f, 1.0f },
{ 1.0f, 1.0f, 0.0f, 1.0f }
},
{
{ -0.9f, 0.9f, 0.0f, 1.0f },
{ 0.0f, 1.0f, 0.0f, 1.0f }
},
{
{ -0.9f, -0.9f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 1.0f, 1.0f }
},
{
{ 0.9f, -0.9f, 0.0f, 1.0f },
{ 1.0f, 0.0f, 1.0f, 1.0f }
}
};
p->vbuf = pipe_buffer_create(p->screen, PIPE_BIND_VERTEX_BUFFER,
PIPE_USAGE_DEFAULT, sizeof(vertices));
pipe_buffer_write(p->pipe, p->vbuf, 0, sizeof(vertices), vertices);
}
/* render target texture */
{
struct pipe_resource tmplt;
memset(&tmplt, 0, sizeof(tmplt));
tmplt.target = PIPE_TEXTURE_2D;
tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
tmplt.width0 = WIDTH;
tmplt.height0 = HEIGHT;
tmplt.depth0 = 1;
tmplt.array_size = 1;
tmplt.last_level = 0;
tmplt.bind = PIPE_BIND_RENDER_TARGET;
p->target = p->screen->resource_create(p->screen, &tmplt);
}
/* sampler texture */
{
uint32_t *ptr;
struct pipe_transfer *t;
struct pipe_resource t_tmplt;
struct pipe_sampler_view v_tmplt;
struct pipe_box box;
memset(&t_tmplt, 0, sizeof(t_tmplt));
t_tmplt.target = PIPE_TEXTURE_2D;
t_tmplt.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
t_tmplt.width0 = 2;
t_tmplt.height0 = 2;
t_tmplt.depth0 = 1;
t_tmplt.array_size = 1;
t_tmplt.last_level = 0;
t_tmplt.bind = PIPE_BIND_RENDER_TARGET;
p->tex = p->screen->resource_create(p->screen, &t_tmplt);
memset(&box, 0, sizeof(box));
box.width = 2;
box.height = 2;
ptr = p->pipe->transfer_map(p->pipe, p->tex, 0, PIPE_TRANSFER_WRITE, &box, &t);
ptr[0] = 0xffff0000;
ptr[1] = 0xff0000ff;
ptr[2] = 0xff00ff00;
ptr[3] = 0xffffff00;
p->pipe->transfer_unmap(p->pipe, t);
u_sampler_view_default_template(&v_tmplt, p->tex, p->tex->format);
p->view = p->pipe->create_sampler_view(p->pipe, p->tex, &v_tmplt);
}
/* disabled blending/masking */
memset(&p->blend, 0, sizeof(p->blend));
p->blend.rt[0].colormask = PIPE_MASK_RGBA;
/* no-op depth/stencil/alpha */
memset(&p->depthstencil, 0, sizeof(p->depthstencil));
/* rasterizer */
memset(&p->rasterizer, 0, sizeof(p->rasterizer));
p->rasterizer.cull_face = PIPE_FACE_NONE;
p->rasterizer.half_pixel_center = 1;
p->rasterizer.bottom_edge_rule = 1;
p->rasterizer.depth_clip = 1;
/* sampler */
memset(&p->sampler, 0, sizeof(p->sampler));
p->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
p->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
p->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
p->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
p->sampler.min_img_filter = PIPE_TEX_MIPFILTER_LINEAR;
p->sampler.mag_img_filter = PIPE_TEX_MIPFILTER_LINEAR;
p->sampler.normalized_coords = 1;
surf_tmpl.format = PIPE_FORMAT_B8G8R8A8_UNORM; /* All drivers support this */
surf_tmpl.u.tex.level = 0;
surf_tmpl.u.tex.first_layer = 0;
surf_tmpl.u.tex.last_layer = 0;
/* drawing destination */
memset(&p->framebuffer, 0, sizeof(p->framebuffer));
p->framebuffer.width = WIDTH;
p->framebuffer.height = HEIGHT;
p->framebuffer.nr_cbufs = 1;
p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, p->target, &surf_tmpl);
/* viewport, depth isn't really needed */
{
float x = 0;
float y = 0;
float z = FAR;
float half_width = (float)WIDTH / 2.0f;
float half_height = (float)HEIGHT / 2.0f;
float half_depth = ((float)FAR - (float)NEAR) / 2.0f;
float scale, bias;
if (FLIP) {
scale = -1.0f;
bias = (float)HEIGHT;
} else {
scale = 1.0f;
bias = 0.0f;
}
p->viewport.scale[0] = half_width;
p->viewport.scale[1] = half_height * scale;
p->viewport.scale[2] = half_depth;
p->viewport.translate[0] = half_width + x;
p->viewport.translate[1] = (half_height + y) * scale + bias;
p->viewport.translate[2] = half_depth + z;
}
/* vertex elements state */
memset(p->velem, 0, sizeof(p->velem));
p->velem[0].src_offset = 0 * 4 * sizeof(float); /* offset 0, first element */
p->velem[0].instance_divisor = 0;
p->velem[0].vertex_buffer_index = 0;
p->velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
p->velem[1].src_offset = 1 * 4 * sizeof(float); /* offset 16, second element */
p->velem[1].instance_divisor = 0;
p->velem[1].vertex_buffer_index = 0;
p->velem[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
/* vertex shader */
{
const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
TGSI_SEMANTIC_GENERIC };
const uint semantic_indexes[] = { 0, 0 };
p->vs = util_make_vertex_passthrough_shader(p->pipe, 2, semantic_names, semantic_indexes, FALSE);
}
/* fragment shader */
p->fs = util_make_fragment_tex_shader(p->pipe, TGSI_TEXTURE_2D, TGSI_INTERPOLATE_LINEAR);
}
static void setup_shaders(struct renderer *ctx)
{
struct pipe_context *pipe = ctx->pipe;
/* fragment shader */
ctx->fs = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_2D);
}
