Exemplos de cairo_gl_shader_get_fragment_source em C++ (Cpp)

Exemplo n.º 1

Arquivo: cairo-gl-shaders.c Projeto: CODECOMMUNITY/cairo

cairo_status_t
_cairo_gl_get_shader_by_type (cairo_gl_context_t *ctx,
                              cairo_gl_operand_t *source,
                              cairo_gl_operand_t *mask,
			      cairo_bool_t use_coverage,
                              cairo_gl_shader_in_t in,
                              cairo_gl_shader_t **shader)
{
    cairo_shader_cache_entry_t lookup, *entry;
    char *fs_source;
    cairo_status_t status;

    lookup.ctx = ctx;
    lookup.src = source->type;
    lookup.mask = mask->type;
    lookup.dest = CAIRO_GL_OPERAND_NONE;
    lookup.use_coverage = use_coverage;
    lookup.in = in;
    lookup.src_gl_filter = _cairo_gl_operand_get_gl_filter (source);
    lookup.src_border_fade = _cairo_gl_shader_needs_border_fade (source);
    lookup.src_extend = _cairo_gl_operand_get_extend (source);
    lookup.mask_gl_filter = _cairo_gl_operand_get_gl_filter (mask);
    lookup.mask_border_fade = _cairo_gl_shader_needs_border_fade (mask);
    lookup.mask_extend = _cairo_gl_operand_get_extend (mask);
    lookup.base.hash = _cairo_gl_shader_cache_hash (&lookup);
    lookup.base.size = 1;

    entry = _cairo_cache_lookup (&ctx->shaders, &lookup.base);
    if (entry) {
        assert (entry->shader.program);
        *shader = &entry->shader;
	return CAIRO_STATUS_SUCCESS;
    }

    status = cairo_gl_shader_get_fragment_source (ctx,
						  in,
						  source,
						  mask,
						  use_coverage,
						  CAIRO_GL_OPERAND_NONE,
						  &fs_source);
    if (unlikely (status))
	return status;

    entry = malloc (sizeof (cairo_shader_cache_entry_t));
    if (unlikely (entry == NULL)) {
        free (fs_source);
        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
    }

    memcpy (entry, &lookup, sizeof (cairo_shader_cache_entry_t));

    entry->ctx = ctx;
    _cairo_gl_shader_init (&entry->shader);
    status = _cairo_gl_shader_compile (ctx,
				       &entry->shader,
				       cairo_gl_operand_get_var_type (source->type),
				       cairo_gl_operand_get_var_type (mask->type),
				       use_coverage,
				       fs_source);
    free (fs_source);

    if (unlikely (status)) {
	free (entry);
	return status;
    }

    _cairo_gl_shader_set_samplers (ctx, &entry->shader);

    status = _cairo_cache_insert (&ctx->shaders, &entry->base);
    if (unlikely (status)) {
	_cairo_gl_shader_fini (ctx, &entry->shader);
	free (entry);
	return status;
    }

    *shader = &entry->shader;

    return CAIRO_STATUS_SUCCESS;
}

Exemplo n.º 2

Arquivo: cairo-gl-shaders.c Projeto: 499940913/moon

cairo_status_t
_cairo_gl_get_shader_by_type (cairo_gl_context_t *ctx,
                              cairo_gl_operand_type_t source,
                              cairo_gl_operand_type_t mask,
                              cairo_gl_shader_in_t in,
                              cairo_gl_shader_t **shader)
{
    cairo_shader_cache_entry_t lookup, *entry;
    char *fs_source;
    cairo_status_t status;

    if (ctx->shader_impl == NULL) {
        *shader = NULL;
	return CAIRO_STATUS_SUCCESS;
    }

    lookup.src = source;
    lookup.mask = mask;
    lookup.dest = CAIRO_GL_OPERAND_NONE;
    lookup.in = in;
    lookup.base.hash = _cairo_gl_shader_cache_hash (&lookup);
    lookup.base.size = 1;

    entry = _cairo_cache_lookup (&ctx->shaders, &lookup.base);
    if (entry) {
        assert (entry->shader.program);
        *shader = &entry->shader;
	return CAIRO_STATUS_SUCCESS;
    }

    status = cairo_gl_shader_get_fragment_source (ctx->tex_target,
						  in,
						  source,
						  mask,
						  CAIRO_GL_OPERAND_NONE,
						  &fs_source);
    if (unlikely (status))
	return status;

    entry = malloc (sizeof (cairo_shader_cache_entry_t));
    if (unlikely (entry == NULL)) {
        free (fs_source);
        return _cairo_error (CAIRO_STATUS_NO_MEMORY);
    }

    memcpy (entry, &lookup, sizeof (cairo_shader_cache_entry_t));

    entry->ctx = ctx;
    _cairo_gl_shader_init (&entry->shader);
    status = _cairo_gl_shader_compile (ctx,
				       &entry->shader,
				       cairo_gl_operand_get_var_type (source),
				       cairo_gl_operand_get_var_type (mask),
				       fs_source);
    free (fs_source);

    if (unlikely (status)) {
	free (entry);
	return status;
    }

    status = _cairo_cache_insert (&ctx->shaders, &entry->base);
    if (unlikely (status)) {
	_cairo_gl_shader_fini (ctx, &entry->shader);
	free (entry);
	return status;
    }

    *shader = &entry->shader;

    return CAIRO_STATUS_SUCCESS;
}