aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/glamor/glamor_program.c
diff options
context:
space:
mode:
Diffstat (limited to 'xorg-server/glamor/glamor_program.c')
-rw-r--r--xorg-server/glamor/glamor_program.c394
1 files changed, 394 insertions, 0 deletions
diff --git a/xorg-server/glamor/glamor_program.c b/xorg-server/glamor/glamor_program.c
new file mode 100644
index 000000000..e2e1434ee
--- /dev/null
+++ b/xorg-server/glamor/glamor_program.c
@@ -0,0 +1,394 @@
+/*
+ * Copyright © 2014 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include "glamor_priv.h"
+#include "glamor_transform.h"
+#include "glamor_program.h"
+
+static Bool
+use_solid(PixmapPtr pixmap, GCPtr gc, glamor_program *prog, void *arg)
+{
+ return glamor_set_solid(pixmap, gc, TRUE, prog->fg_uniform);
+}
+
+const glamor_facet glamor_fill_solid = {
+ .name = "solid",
+ .fs_exec = " gl_FragColor = fg;\n",
+ .locations = glamor_program_location_fg,
+ .use = use_solid,
+};
+
+static Bool
+use_tile(PixmapPtr pixmap, GCPtr gc, glamor_program *prog, void *arg)
+{
+ return glamor_set_tiled(pixmap, gc, prog->fill_offset_uniform, prog->fill_size_uniform);
+}
+
+static const glamor_facet glamor_fill_tile = {
+ .name = "tile",
+ .version = 130,
+ .vs_exec = " fill_pos = fill_offset + primitive.xy + pos;\n",
+ .fs_exec = " gl_FragColor = texelFetch(sampler, ivec2(mod(fill_pos,fill_size)), 0);\n",
+ .locations = glamor_program_location_fill,
+ .use = use_tile,
+};
+
+#if 0
+static Bool
+use_stipple(PixmapPtr pixmap, GCPtr gc, glamor_program *prog)
+{
+ return glamor_set_stippled(pixmap, gc, prog->fg_uniform, prog->fill_offset_uniform, prog->fill_size_uniform);
+}
+
+static const glamor_facet glamor_fill_stipple = {
+ .name = "stipple",
+ .version = 130,
+ .vs_exec = " fill_pos = fill_offset + primitive.xy + pos;\n";
+ .fs_exec = (" if (texelFetch(sampler, ivec2(mod(fill_pos,fill_size)), 0).x == 0)\n"
+ " discard;\n"
+ " gl_FragColor = fg;\n")
+ .locations = glamor_program_location_fg | glamor_program_location_fill
+ .use = use_stipple,
+};
+
+static const glamor_facet glamor_fill_opaque_stipple = {
+ .name = "opaque_stipple",
+ .version = 130,
+ .vs_exec = " fill_pos = fill_offset + primitive.xy + pos;\n";
+ .fs_exec = (" if (texelFetch(sampler, ivec2(mod(fill_pos,fill_size)), 0).x == 0)\n"
+ " gl_FragColor = bg;\n"
+ " else\n"
+ " gl_FragColor = fg;\n"),
+ .locations = glamor_program_location_fg | glamor_program_location_bg | glamor_program_location_fill
+ .use = use_opaque_stipple
+};
+#endif
+
+static const glamor_facet *glamor_facet_fill[4] = {
+ &glamor_fill_solid,
+ &glamor_fill_tile,
+ NULL,
+ NULL,
+};
+
+typedef struct {
+ glamor_program_location location;
+ const char *vs_vars;
+ const char *fs_vars;
+} glamor_location_var;
+
+static glamor_location_var location_vars[] = {
+ {
+ .location = glamor_program_location_fg,
+ .fs_vars = "uniform vec4 fg;\n"
+ },
+ {
+ .location = glamor_program_location_bg,
+ .fs_vars = "uniform vec4 bg;\n"
+ },
+ {
+ .location = glamor_program_location_fill,
+ .vs_vars = ("uniform vec2 fill_offset;\n"
+ "varying vec2 fill_pos;\n"),
+ .fs_vars = ("uniform sampler2D sampler;\n"
+ "uniform vec2 fill_size;\n"
+ "varying vec2 fill_pos;\n")
+ },
+ {
+ .location = glamor_program_location_font,
+ .fs_vars = "uniform usampler2D font;\n",
+ },
+};
+
+#define NUM_LOCATION_VARS (sizeof location_vars / sizeof location_vars[0])
+
+static char *
+add_var(char *cur, const char *add)
+{
+ char *new;
+
+ if (!add)
+ return cur;
+
+ new = realloc(cur, strlen(cur) + strlen(add) + 1);
+ if (!new) {
+ free(cur);
+ return NULL;
+ }
+ strcat(new, add);
+ return new;
+}
+
+static char *
+vs_location_vars(glamor_program_location locations)
+{
+ int l;
+ char *vars = strdup("");
+
+ for (l = 0; vars && l < NUM_LOCATION_VARS; l++)
+ if (locations & location_vars[l].location)
+ vars = add_var(vars, location_vars[l].vs_vars);
+ return vars;
+}
+
+static char *
+fs_location_vars(glamor_program_location locations)
+{
+ int l;
+ char *vars = strdup("");
+
+ for (l = 0; vars && l < NUM_LOCATION_VARS; l++)
+ if (locations & location_vars[l].location)
+ vars = add_var(vars, location_vars[l].fs_vars);
+ return vars;
+}
+
+static const char vs_template[] =
+ "%s" /* version */
+ "%s" /* prim vs_vars */
+ "%s" /* fill vs_vars */
+ "%s" /* location vs_vars */
+ GLAMOR_DECLARE_MATRIX
+ "void main() {\n"
+ "%s" /* prim vs_exec, outputs 'pos' and gl_Position */
+ "%s" /* fill vs_exec */
+ "}\n";
+
+static const char fs_template[] =
+ "%s" /* version */
+ GLAMOR_DEFAULT_PRECISION
+ "%s" /* prim fs_vars */
+ "%s" /* fill fs_vars */
+ "%s" /* location fs_vars */
+ "void main() {\n"
+ "%s" /* prim fs_exec */
+ "%s" /* fill fs_exec */
+ "}\n";
+
+static const char *
+str(const char *s)
+{
+ if (!s)
+ return "";
+ return s;
+}
+
+static const glamor_facet facet_null_fill = {
+ .name = ""
+};
+
+static GLint
+glamor_get_uniform(glamor_program *prog,
+ glamor_program_location location,
+ const char *name)
+{
+ GLint uniform;
+ if (location && (prog->locations & location) == 0)
+ return -2;
+ uniform = glGetUniformLocation(prog->prog, name);
+#if DBG
+ ErrorF("%s uniform %d\n", name, uniform);
+#endif
+ return uniform;
+}
+
+Bool
+glamor_build_program(ScreenPtr screen,
+ glamor_program *prog,
+ const glamor_facet *prim,
+ const glamor_facet *fill)
+{
+ glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
+
+ glamor_program_location locations = prim->locations;
+ glamor_program_flag flags = prim->flags;
+
+ int version = prim->version;
+ char *version_string = NULL;
+
+ char *fs_vars = NULL;
+ char *vs_vars = NULL;
+
+ char *vs_prog_string;
+ char *fs_prog_string;
+
+ GLint fs_prog, vs_prog;
+
+ if (!fill)
+ fill = &facet_null_fill;
+
+ locations |= fill->locations;
+ flags |= fill->flags;
+ version = MAX(version, fill->version);
+
+ if (version >= 130) {
+
+ /* Would be nice to have a cleaner test for GLSL 1.30 support,
+ * but for now this should suffice
+ */
+ if (glamor_priv->gl_flavor != GLAMOR_GL_DESKTOP ||
+ epoxy_gl_version() < 30) {
+ goto fail;
+ }
+ }
+
+ vs_vars = vs_location_vars(locations);
+ fs_vars = fs_location_vars(locations);
+
+ if (!vs_vars)
+ goto fail;
+ if (!fs_vars)
+ goto fail;
+
+ if (version) {
+ if (asprintf(&version_string, "#version %d\n", version) < 0)
+ version_string = NULL;
+ if (!version_string)
+ goto fail;
+ }
+
+ if (asprintf(&vs_prog_string,
+ vs_template,
+ str(version_string),
+ str(prim->vs_vars),
+ str(fill->vs_vars),
+ vs_vars,
+ str(prim->vs_exec),
+ str(fill->vs_exec)) < 0)
+ vs_prog_string = NULL;
+
+ if (asprintf(&fs_prog_string,
+ fs_template,
+ str(version_string),
+ str(prim->fs_vars),
+ str(fill->fs_vars),
+ fs_vars,
+ str(prim->fs_exec),
+ str(fill->fs_exec)) < 0)
+ fs_prog_string = NULL;
+
+ if (!vs_prog_string || !fs_prog_string)
+ goto fail;
+
+#define DBG 0
+#if DBG
+ ErrorF("\nPrograms for %s %s\nVertex shader:\n\n%s\n\nFragment Shader:\n\n%s",
+ prim->name, fill->name, vs_prog_string, fs_prog_string);
+#endif
+
+ prog->prog = glCreateProgram();
+ prog->flags = flags;
+ prog->locations = locations;
+ prog->prim_use = prim->use;
+ prog->fill_use = fill->use;
+
+ vs_prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER, vs_prog_string);
+ fs_prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER, fs_prog_string);
+ free(vs_prog_string);
+ free(fs_prog_string);
+ glAttachShader(prog->prog, vs_prog);
+ glDeleteShader(vs_prog);
+ glAttachShader(prog->prog, fs_prog);
+ glDeleteShader(fs_prog);
+ glBindAttribLocation(prog->prog, GLAMOR_VERTEX_POS, "primitive");
+
+ if (prim->source_name) {
+#if DBG
+ ErrorF("Bind GLAMOR_VERTEX_SOURCE to %s\n", prim->source_name);
+#endif
+ glBindAttribLocation(prog->prog, GLAMOR_VERTEX_SOURCE, prim->source_name);
+ }
+
+ glamor_link_glsl_prog(screen, prog->prog, "%s_%s", prim->name, fill->name);
+
+ prog->matrix_uniform = glamor_get_uniform(prog, glamor_program_location_none, "v_matrix");
+ prog->fg_uniform = glamor_get_uniform(prog, glamor_program_location_fg, "fg");
+ prog->bg_uniform = glamor_get_uniform(prog, glamor_program_location_bg, "bg");
+ prog->fill_offset_uniform = glamor_get_uniform(prog, glamor_program_location_fill, "fill_offset");
+ prog->fill_size_uniform = glamor_get_uniform(prog, glamor_program_location_fill, "fill_size");
+ prog->font_uniform = glamor_get_uniform(prog, glamor_program_location_font, "font");
+
+ if (glGetError() != GL_NO_ERROR)
+ goto fail;
+
+ free(version_string);
+ free(fs_vars);
+ free(vs_vars);
+ return TRUE;
+fail:
+ prog->failed = 1;
+ if (prog->prog) {
+ glDeleteProgram(prog->prog);
+ prog->prog = 0;
+ }
+ free(version_string);
+ free(fs_vars);
+ free(vs_vars);
+ return FALSE;
+}
+
+Bool
+glamor_use_program(PixmapPtr pixmap,
+ GCPtr gc,
+ glamor_program *prog,
+ void *arg)
+{
+ glUseProgram(prog->prog);
+
+ if (prog->prim_use && !prog->prim_use(pixmap, gc, prog, arg))
+ return FALSE;
+
+ if (prog->fill_use && !prog->fill_use(pixmap, gc, prog, arg))
+ return FALSE;
+
+ return TRUE;
+}
+
+glamor_program *
+glamor_use_program_fill(PixmapPtr pixmap,
+ GCPtr gc,
+ glamor_program_fill *program_fill,
+ const glamor_facet *prim)
+{
+ ScreenPtr screen = pixmap->drawable.pScreen;
+ glamor_program *prog = &program_fill->progs[gc->fillStyle];
+
+ int fill_style = gc->fillStyle;
+ const glamor_facet *fill;
+
+ if (prog->failed)
+ return FALSE;
+
+ if (!prog->prog) {
+ fill = glamor_facet_fill[fill_style];
+ if (!fill)
+ return NULL;
+
+ if (!glamor_build_program(screen, prog, prim, fill))
+ return NULL;
+ }
+
+ if (!glamor_use_program(pixmap, gc, prog, NULL))
+ return NULL;
+
+ return prog;
+}