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; }
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; }
static cairo_status_t _cairo_gl_shader_compile_and_link (cairo_gl_context_t *ctx, cairo_gl_shader_t *shader, cairo_gl_operand_t *src, cairo_gl_operand_t *mask, cairo_bool_t use_coverage, const char *fragment_text) { unsigned int vertex_shader; cairo_status_t status; cairo_gl_var_type_t src_type; cairo_gl_var_type_t mask_type; cairo_extend_t src_atlas_extend = CAIRO_EXTEND_NONE; cairo_extend_t mask_atlas_extend = CAIRO_EXTEND_NONE; cairo_bool_t src_use_atlas = FALSE; cairo_bool_t mask_use_atlas = FALSE; assert (shader->program == 0); if (src != NULL) { src_type = cairo_gl_operand_get_var_type (src->type, src->use_color_attribute); src_atlas_extend = _cairo_gl_operand_get_atlas_extend (src); src_use_atlas = _cairo_gl_operand_get_use_atlas (src); } else src_type = CAIRO_GL_VAR_NONE; if (mask != NULL) { mask_type = cairo_gl_operand_get_var_type (mask->type, mask->use_color_attribute); mask_atlas_extend = _cairo_gl_operand_get_atlas_extend (mask); mask_use_atlas = _cairo_gl_operand_get_use_atlas (mask); } else mask_type = CAIRO_GL_VAR_NONE; vertex_shader = cairo_gl_var_type_hash (src_type, mask_type, src_atlas_extend, mask_atlas_extend, src_use_atlas, mask_use_atlas, use_coverage, CAIRO_GL_VAR_NONE); if (ctx->vertex_shaders[vertex_shader] == 0) { char *source; status = cairo_gl_shader_get_vertex_source (src_type, mask_type, src_use_atlas, mask_use_atlas, use_coverage, CAIRO_GL_VAR_NONE, &source); if (unlikely (status)) goto FAILURE; compile_shader (ctx, &ctx->vertex_shaders[vertex_shader], GL_VERTEX_SHADER, source); free (source); } compile_shader (ctx, &shader->fragment_shader, GL_FRAGMENT_SHADER, fragment_text); link_shader_program (ctx, &shader->program, ctx->vertex_shaders[vertex_shader], shader->fragment_shader); return CAIRO_STATUS_SUCCESS; FAILURE: _cairo_gl_shader_fini (ctx, shader); shader->fragment_shader = 0; shader->program = 0; return status; }