[PATCH 06/20] glamor: Add infrastructure for generating shaders on the fly
Keith Packard
keithp at keithp.com
Tue Mar 18 22:09:40 PDT 2014
This just adds a bunch of support code to construct shaders from
'facets', which bundle attributes needed for each layer of the
rendering system. At this point, that includes only the primtive and
the fill stuff.
Signed-off-by: Keith Packard <keithp at keithp.com>
---
glamor/Makefile.am | 2 +
glamor/glamor_priv.h | 1 +
glamor/glamor_program.c | 394 ++++++++++++++++++++++++++++++++++++++++++++++
glamor/glamor_program.h | 94 +++++++++++
glamor/glamor_transform.c | 216 +++++++++++++++++++++++++
glamor/glamor_transform.h | 87 ++++++++++
6 files changed, 794 insertions(+)
create mode 100644 glamor/glamor_program.c
create mode 100644 glamor/glamor_program.h
create mode 100644 glamor/glamor_transform.c
create mode 100644 glamor/glamor_transform.h
diff --git a/glamor/Makefile.am b/glamor/Makefile.am
index ffc8c23..dec6467 100644
--- a/glamor/Makefile.am
+++ b/glamor/Makefile.am
@@ -22,6 +22,8 @@ libglamor_la_SOURCES = \
glamor_setspans.c \
glamor_render.c \
glamor_gradient.c \
+ glamor_program.c \
+ glamor_transform.c \
glamor_trapezoid.c \
glamor_tile.c \
glamor_triangles.c\
diff --git a/glamor/glamor_priv.h b/glamor/glamor_priv.h
index fc9ab9e..5013799 100644
--- a/glamor/glamor_priv.h
+++ b/glamor/glamor_priv.h
@@ -52,6 +52,7 @@
#include "glamor_debug.h"
#include "glamor_context.h"
+#include "glamor_program.h"
#include <list.h>
diff --git a/glamor/glamor_program.c b/glamor/glamor_program.c
new file mode 100644
index 0000000..0f9b248
--- /dev/null
+++ b/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 ||
+ glamor_gl_get_version() < GLAMOR_GL_VERSION_ENCODE(3, 0)) {
+ 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;
+}
diff --git a/glamor/glamor_program.h b/glamor/glamor_program.h
new file mode 100644
index 0000000..88efc35
--- /dev/null
+++ b/glamor/glamor_program.h
@@ -0,0 +1,94 @@
+/*
+ * 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.
+ */
+
+#ifndef _GLAMOR_PROGRAM_H_
+#define _GLAMOR_PROGRAM_H_
+
+typedef enum {
+ glamor_program_location_none = 0,
+ glamor_program_location_fg = 1,
+ glamor_program_location_bg = 2,
+ glamor_program_location_fill = 4,
+ glamor_program_location_font = 8,
+} glamor_program_location;
+
+typedef enum {
+ glamor_program_flag_none = 0,
+} glamor_program_flag;
+
+typedef struct _glamor_program glamor_program;
+
+typedef Bool (*glamor_use) (PixmapPtr pixmap, GCPtr gc, glamor_program *prog, void *arg);
+
+typedef struct {
+ const char *name;
+ const int version;
+ const char *vs_vars;
+ const char *vs_exec;
+ const char *fs_vars;
+ const char *fs_exec;
+ const glamor_program_location locations;
+ const glamor_program_flag flags;
+ const char *source_name;
+ glamor_use use;
+} glamor_facet;
+
+struct _glamor_program {
+ GLint prog;
+ GLint failed;
+ GLint matrix_uniform;
+ GLint fg_uniform;
+ GLint bg_uniform;
+ GLint fill_size_uniform;
+ GLint fill_offset_uniform;
+ GLint font_uniform;
+ glamor_program_location locations;
+ glamor_program_flag flags;
+ glamor_use prim_use;
+ glamor_use fill_use;
+};
+
+typedef struct {
+ glamor_program progs[4];
+} glamor_program_fill;
+
+extern const glamor_facet glamor_fill_solid;
+
+Bool
+glamor_build_program(ScreenPtr screen,
+ glamor_program *prog,
+ const glamor_facet *prim,
+ const glamor_facet *fill);
+
+Bool
+glamor_use_program(PixmapPtr pixmap,
+ GCPtr gc,
+ glamor_program *prog,
+ void *arg);
+
+glamor_program *
+glamor_use_program_fill(PixmapPtr pixmap,
+ GCPtr gc,
+ glamor_program_fill *program_fill,
+ const glamor_facet *prim);
+
+#endif /* _GLAMOR_PROGRAM_H_ */
diff --git a/glamor/glamor_transform.c b/glamor/glamor_transform.c
new file mode 100644
index 0000000..f5a6bb2
--- /dev/null
+++ b/glamor/glamor_transform.c
@@ -0,0 +1,216 @@
+/*
+ * 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"
+
+
+/*
+ * Set up rendering to target the specified drawable, computing an
+ * appropriate transform for the vertex shader to convert
+ * drawable-relative coordinates into pixmap-relative coordinates. If
+ * requested, the offset from pixmap origin coordinates back to window
+ * system coordinates will be returned in *p_off_x, *p_off_y so that
+ * clipping computations can be adjusted as appropriate
+ */
+
+void
+glamor_set_destination_drawable(DrawablePtr drawable,
+ int box_x,
+ int box_y,
+ Bool do_drawable_translate,
+ Bool center_offset,
+ GLint matrix_uniform_location,
+ int *p_off_x,
+ int *p_off_y)
+{
+ PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
+ glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
+ int off_x, off_y;
+ BoxPtr box = glamor_pixmap_box_at(pixmap_priv, box_x, box_y);
+ int w = box->x2 - box->x1;
+ int h = box->y2 - box->y1;
+ float scale_x = 2.0f / (float) w;
+ float scale_y = 2.0f / (float) h;
+ float center_adjust = 0.0f;
+
+ glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
+
+ off_x -= box->x1;
+ off_y -= box->y1;
+
+ if (p_off_x) {
+ *p_off_x = off_x;
+ *p_off_y = off_y;
+ }
+
+ /* A tricky computation to find the right value for the two linear functions
+ * that transform rendering coordinates to pixmap coordinates
+ *
+ * pixmap_x = render_x + drawable->x + off_x
+ * pixmap_y = render_y + drawable->y + off_y
+ *
+ * gl_x = pixmap_x * 2 / width - 1
+ * gl_y = pixmap_y * 2 / height - 1
+ *
+ * gl_x = (render_x + drawable->x + off_x) * 2 / width - 1
+ *
+ * gl_x = (render_x) * 2 / width + (drawable->x + off_x) * 2 / width - 1
+ *
+ * To get GL_POINTS drawn in the right spot, we need to adjust the
+ * coordinates by 1/2 a pixel. This doesn't hurt rectangles at
+ * all, so we just always do it. If we need to change someday, we
+ * can add a parameter to this function
+ *
+ * I'll think about yInverted later, when I have some way to test
+ */
+
+ if (do_drawable_translate) {
+ off_x += drawable->x;
+ off_y += drawable->y;
+ }
+
+ if (center_offset)
+ center_adjust = 0.5f;
+
+ glUniform4f(matrix_uniform_location,
+ scale_x, (off_x + center_adjust) * scale_x - 1.0f,
+ scale_y, (off_y + center_adjust) * scale_y - 1.0f);
+
+ glamor_set_destination_pixmap_fbo(glamor_pixmap_fbo_at(pixmap_priv, box_x, box_y),
+ 0, 0, w, h);
+}
+
+/*
+ * Set up for solid rendering to the specified pixmap using alu, fg and planemask
+ * from the specified GC. Load the target color into the specified uniform
+ */
+
+void
+glamor_set_color(PixmapPtr pixmap,
+ CARD32 pixel,
+ GLint uniform)
+{
+ float color[4];
+
+ glamor_get_rgba_from_pixel(pixel,
+ &color[0], &color[1], &color[2], &color[3],
+ format_for_pixmap(pixmap));
+
+ glUniform4fv(uniform, 1, color);
+}
+
+Bool
+glamor_set_solid(PixmapPtr pixmap,
+ GCPtr gc,
+ Bool use_alu,
+ GLint uniform)
+{
+ CARD32 pixel;
+ int alu = use_alu ? gc->alu : GXcopy;
+
+ if (!glamor_set_planemask(pixmap, gc->planemask))
+ return FALSE;
+
+ pixel = gc->fgPixel;
+
+ if (!glamor_set_alu(pixmap->drawable.pScreen, alu)) {
+ switch (gc->alu) {
+ case GXclear:
+ pixel = 0;
+ break;
+ case GXcopyInverted:
+ pixel = ~pixel;
+ break;
+ case GXset:
+ pixel = ~0 & gc->planemask;
+ break;
+ default:
+ return FALSE;
+ }
+ }
+ glamor_set_color(pixmap, gc->fgPixel, uniform);
+
+ return TRUE;
+}
+
+Bool
+glamor_set_texture(PixmapPtr pixmap,
+ PixmapPtr texture,
+ int off_x,
+ int off_y,
+ GLint offset_uniform,
+ GLint size_uniform)
+{
+ glamor_pixmap_private *texture_priv;
+
+ texture_priv = glamor_get_pixmap_private(texture);
+
+ if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(texture_priv))
+ return FALSE;
+
+ if (texture_priv->type == GLAMOR_TEXTURE_LARGE)
+ return FALSE;
+
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture(GL_TEXTURE_2D, texture_priv->base.fbo->tex);
+
+ glUniform2f(offset_uniform, off_x, off_y);
+ glUniform2f(size_uniform, texture->drawable.width, texture->drawable.height);
+ return TRUE;
+}
+
+Bool
+glamor_set_tiled(PixmapPtr pixmap,
+ GCPtr gc,
+ GLint offset_uniform,
+ GLint size_uniform)
+{
+ if (!glamor_set_alu(pixmap->drawable.pScreen, gc->alu))
+ return FALSE;
+
+ if (!glamor_set_planemask(pixmap, gc->planemask))
+ return FALSE;
+
+ return glamor_set_texture(pixmap,
+ gc->tile.pixmap,
+ gc->patOrg.x,
+ gc->patOrg.y,
+ offset_uniform,
+ size_uniform);
+}
+
+Bool
+glamor_set_stippled(PixmapPtr pixmap,
+ GCPtr gc,
+ GLint fg_uniform,
+ GLint offset_uniform,
+ GLint size_uniform)
+{
+ if (!glamor_set_solid(pixmap, gc, TRUE, fg_uniform))
+ return FALSE;
+
+ if (!glamor_set_texture(pixmap, gc->stipple, gc->patOrg.x, gc->patOrg.y, offset_uniform, size_uniform))
+ return FALSE;
+
+ return TRUE;
+}
diff --git a/glamor/glamor_transform.h b/glamor/glamor_transform.h
new file mode 100644
index 0000000..36b789a
--- /dev/null
+++ b/glamor/glamor_transform.h
@@ -0,0 +1,87 @@
+/*
+ * 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.
+ */
+
+#ifndef _GLAMOR_TRANSFORM_H_
+#define _GLAMOR_TRANSFORM_H_
+
+void
+glamor_set_destination_drawable(DrawablePtr drawable,
+ int box_x,
+ int box_y,
+ Bool do_drawable_translate,
+ Bool center_offset,
+ GLint matrix_uniform_location,
+ int *p_off_x,
+ int *p_off_y);
+
+void
+glamor_set_color(PixmapPtr pixmap,
+ CARD32 pixel,
+ GLint uniform);
+
+Bool
+glamor_set_texture(PixmapPtr pixmap,
+ PixmapPtr texture,
+ int off_x,
+ int off_y,
+ GLint offset_uniform,
+ GLint size_uniform);
+
+Bool
+glamor_set_solid(PixmapPtr pixmap,
+ GCPtr gc,
+ Bool use_alu,
+ GLint uniform);
+
+Bool
+glamor_set_tiled(PixmapPtr pixmap,
+ GCPtr gc,
+ GLint offset_uniform,
+ GLint size_uniform);
+
+Bool
+glamor_set_stippled(PixmapPtr pixmap,
+ GCPtr gc,
+ GLint fg_uniform,
+ GLint offset_uniform,
+ GLint size_uniform);
+
+/*
+ * Vertex shader bits that transform X coordinates to pixmap
+ * coordinates using the matrix computed above
+ */
+
+#define GLAMOR_DECLARE_MATRIX "uniform vec4 v_matrix;\n"
+#define GLAMOR_X_POS(x) #x " *v_matrix.x + v_matrix.y"
+#define GLAMOR_Y_POS(y) #y " *v_matrix.z + v_matrix.w"
+#if 0
+#define GLAMOR_POS(dst,src) \
+ " " #dst ".x = " #src ".x * v_matrix.x + v_matrix.y;\n" \
+ " " #dst ".y = " #src ".y * v_matrix.z + v_matrix.w;\n" \
+ " " #dst ".z = 0.0;\n" \
+ " " #dst ".w = 1.0;\n"
+#endif
+#define GLAMOR_POS(dst,src) \
+ " " #dst ".xy = " #src ".xy * v_matrix.xz + v_matrix.yw;\n" \
+ " " #dst ".zw = vec2(0.0,1.0);\n"
+
+#endif /* _GLAMOR_TRANSFORM_H_ */
--
1.9.0
More information about the xorg-devel
mailing list