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authormarha <marha@users.sourceforge.net>2014-04-13 14:24:56 +0200
committermarha <marha@users.sourceforge.net>2014-04-13 14:24:56 +0200
commitd2ad10d03be8e6d4b150bbdf2a28ea3d5a18a2ed (patch)
tree2a860c9d687826b3cb48facfa21c616e14e69347 /xorg-server/glamor/glamor_text.c
parentedb5b380994125bf33929ef7dc5a3c456dfbe93b (diff)
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fontconfig libxcb mesa xserver xcb-proto git update 13 Apr 2014
xserver commit 3028ae6c9aa37168e249e0d847b29f8e3efb05b2 libxcb commit 29e419c5840a1eeda3336a0802686ee723dcaab3 libxcb/xcb-proto commit 70fea02b7d90d86e9d3b0dc5b61406bf4c910999 pixman commit 4b76bbfda670f9ede67d0449f3640605e1fc4df0 fontconfig commit f44157c809d280e2a0ce87fb078fc4b278d24a67 mesa commit 936dda08ee6d7b2be2b016bc06780e401088ec13
Diffstat (limited to 'xorg-server/glamor/glamor_text.c')
-rw-r--r--xorg-server/glamor/glamor_text.c526
1 files changed, 526 insertions, 0 deletions
diff --git a/xorg-server/glamor/glamor_text.c b/xorg-server/glamor/glamor_text.c
new file mode 100644
index 000000000..0e4b74c56
--- /dev/null
+++ b/xorg-server/glamor/glamor_text.c
@@ -0,0 +1,526 @@
+/*
+ * 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 <dixfontstr.h>
+#include "glamor_transform.h"
+
+/*
+ * Fill in the array of charinfo pointers for the provided characters. For
+ * missing characters, place a NULL in the array so that the charinfo array
+ * aligns exactly with chars
+ */
+
+static void
+glamor_get_glyphs(FontPtr font, glamor_font_t *glamor_font,
+ int count, char *chars, Bool sixteen, CharInfoPtr *charinfo)
+{
+ unsigned long nglyphs;
+ FontEncoding encoding;
+ int char_step;
+
+ if (sixteen) {
+ char_step = 2;
+ if (FONTLASTROW(font) == 0)
+ encoding = Linear16Bit;
+ else
+ encoding = TwoD16Bit;
+ } else {
+ char_step = 1;
+ encoding = Linear8Bit;
+ }
+
+ /* If the font has a default character, then we don't have to
+ * worry about missing glyphs, so just get the whole string all at
+ * once. Otherwise, we have to fetch chars one at a time to notice
+ * missing ones.
+ */
+ if (glamor_font->default_char) {
+ GetGlyphs(font, (unsigned long) count, (unsigned char *) chars,
+ encoding, &nglyphs, charinfo);
+ } else {
+ int c;
+ for (c = 0; c < count; c++) {
+ GetGlyphs(font, 1, (unsigned char *) chars,
+ encoding, &nglyphs, &charinfo[c]);
+ if (!nglyphs)
+ charinfo[c] = NULL;
+ chars += char_step;
+ }
+ }
+}
+
+/*
+ * Construct quads for the provided list of characters and draw them
+ */
+
+static int
+glamor_text(DrawablePtr drawable, GCPtr gc,
+ glamor_font_t *glamor_font,
+ glamor_program *prog,
+ int x, int y,
+ int count, char *s_chars, CharInfoPtr *charinfo,
+ Bool sixteen)
+{
+ unsigned char *chars = (unsigned char *) s_chars;
+ FontPtr font = gc->font;
+ int off_x, off_y;
+ int c;
+ int nglyph;
+ GLshort *v;
+ char *vbo_offset;
+ CharInfoPtr ci;
+ int firstRow = font->info.firstRow;
+ int firstCol = font->info.firstCol;
+ int glyph_spacing_x = glamor_font->glyph_width_bytes * 8;
+ int glyph_spacing_y = glamor_font->glyph_height;
+ int box_x, box_y;
+ PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
+ glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
+
+ /* Set the font as texture 1 */
+
+ glActiveTexture(GL_TEXTURE1);
+ glBindTexture(GL_TEXTURE_2D, glamor_font->texture_id);
+ glUniform1i(prog->font_uniform, 1);
+
+ /* Set up the vertex buffers for the font and destination */
+
+ v = glamor_get_vbo_space(drawable->pScreen, count * (6 * sizeof (GLshort)), &vbo_offset);
+
+ glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
+ glVertexAttribDivisor(GLAMOR_VERTEX_POS, 1);
+ glVertexAttribPointer(GLAMOR_VERTEX_POS, 4, GL_SHORT, GL_FALSE,
+ 6 * sizeof (GLshort), vbo_offset);
+
+ glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
+ glVertexAttribDivisor(GLAMOR_VERTEX_SOURCE, 1);
+ glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2, GL_SHORT, GL_FALSE,
+ 6 * sizeof (GLshort), vbo_offset + 4 * sizeof (GLshort));
+
+ /* Set the vertex coordinates */
+ nglyph = 0;
+
+ for (c = 0; c < count; c++) {
+ if ((ci = *charinfo++)) {
+ int x1 = x + ci->metrics.leftSideBearing;
+ int y1 = y - ci->metrics.ascent;
+ int width = GLYPHWIDTHPIXELS(ci);
+ int height = GLYPHHEIGHTPIXELS(ci);
+ int tx, ty = 0;
+ int row = 0, col;
+
+ x += ci->metrics.characterWidth;
+
+ if (sixteen) {
+ if (ci == glamor_font->default_char) {
+ row = glamor_font->default_row;
+ col = glamor_font->default_col;
+ } else {
+ row = chars[0];
+ col = chars[1];
+ }
+ if (FONTLASTROW(font) != 0)
+ ty = (row - firstRow) * glyph_spacing_y;
+ else
+ col += row << 8;
+ } else {
+ if (ci == glamor_font->default_char)
+ col = glamor_font->default_col;
+ else
+ col = chars[0];
+ }
+
+ tx = (col - firstCol) * glyph_spacing_x;
+
+ v[ 0] = x1;
+ v[ 1] = y1;
+ v[ 2] = width;
+ v[ 3] = height;
+ v[ 4] = tx;
+ v[ 5] = ty;
+
+ v += 6;
+ nglyph++;
+ }
+ chars += 1 + sixteen;
+ }
+ glamor_put_vbo_space(drawable->pScreen);
+
+ if (nglyph != 0) {
+
+ glEnable(GL_SCISSOR_TEST);
+
+ glamor_pixmap_loop(pixmap_priv, box_x, box_y) {
+ BoxPtr box = RegionRects(gc->pCompositeClip);
+ int nbox = RegionNumRects(gc->pCompositeClip);
+
+ glamor_set_destination_drawable(drawable, box_x, box_y, TRUE, FALSE, prog->matrix_uniform, &off_x, &off_y);
+
+ /* Run over the clip list, drawing the glyphs
+ * in each box
+ */
+
+ while (nbox--) {
+ glScissor(box->x1 + off_x,
+ box->y1 + off_y,
+ box->x2 - box->x1,
+ box->y2 - box->y1);
+ box++;
+ glDrawArraysInstanced(GL_TRIANGLE_STRIP, 0, 4, nglyph);
+ }
+ }
+ glDisable(GL_SCISSOR_TEST);
+ }
+
+ glVertexAttribDivisor(GLAMOR_VERTEX_SOURCE, 0);
+ glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
+ glVertexAttribDivisor(GLAMOR_VERTEX_POS, 0);
+ glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
+ glDisable(GL_COLOR_LOGIC_OP);
+
+ return x;
+}
+
+static const char vs_vars_text[] =
+ "attribute vec4 primitive;\n"
+ "attribute vec2 source;\n"
+ "varying vec2 glyph_pos;\n";
+
+static const char vs_exec_text[] =
+ " vec2 pos = primitive.zw * vec2(gl_VertexID&1, (gl_VertexID&2)>>1);\n"
+ GLAMOR_POS(gl_Position, (primitive.xy + pos))
+ " glyph_pos = source + pos;\n";
+
+static const char fs_vars_text[] =
+ "varying vec2 glyph_pos;\n";
+
+static const char fs_exec_text[] =
+ " ivec2 itile_texture = ivec2(glyph_pos);\n"
+ " uint x = uint(itile_texture.x & 7);\n"
+ " itile_texture.x >>= 3;\n"
+ " uint texel = texelFetch(font, itile_texture, 0).x;\n"
+ " uint bit = (texel >> x) & uint(1);\n"
+ " if (bit == uint(0))\n"
+ " discard;\n";
+
+static const char fs_exec_te[] =
+ " ivec2 itile_texture = ivec2(glyph_pos);\n"
+ " uint x = uint(itile_texture.x & 7);\n"
+ " itile_texture.x >>= 3;\n"
+ " uint texel = texelFetch(font, itile_texture, 0).x;\n"
+ " uint bit = (texel >> x) & uint(1);\n"
+ " if (bit == uint(0))\n"
+ " gl_FragColor = bg;\n"
+ " else\n"
+ " gl_FragColor = fg;\n";
+
+static const glamor_facet glamor_facet_poly_text = {
+ .name = "poly_text",
+ .version = 130,
+ .vs_vars = vs_vars_text,
+ .vs_exec = vs_exec_text,
+ .fs_vars = fs_vars_text,
+ .fs_exec = fs_exec_text,
+ .source_name = "source",
+ .locations = glamor_program_location_font,
+};
+
+static Bool
+glamor_poly_text(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, char *chars, Bool sixteen, int *final_pos)
+{
+ ScreenPtr screen = drawable->pScreen;
+ glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
+ PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
+ glamor_program *prog;
+ glamor_pixmap_private *pixmap_priv;
+ glamor_font_t *glamor_font;
+ CharInfoPtr charinfo[255]; /* encoding only has 1 byte for count */
+
+ glamor_font = glamor_font_get(drawable->pScreen, gc->font);
+ if (!glamor_font)
+ goto bail;
+
+ glamor_get_glyphs(gc->font, glamor_font, count, chars, sixteen, charinfo);
+
+ pixmap_priv = glamor_get_pixmap_private(pixmap);
+ if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
+ goto bail;
+
+ glamor_get_context(glamor_priv);
+
+ prog = glamor_use_program_fill(pixmap, gc, &glamor_priv->poly_text_progs, &glamor_facet_poly_text);
+
+ if (!prog)
+ goto bail_ctx;
+
+ x = glamor_text(drawable, gc, glamor_font, prog,
+ x, y, count, chars, charinfo, sixteen);
+
+ glDisable(GL_COLOR_LOGIC_OP);
+
+ glamor_put_context(glamor_priv);
+
+ glamor_priv->state = RENDER_STATE;
+ glamor_priv->render_idle_cnt = 0;
+
+ *final_pos = x;
+ return TRUE;
+
+bail_ctx:
+ glDisable(GL_COLOR_LOGIC_OP);
+ glamor_put_context(glamor_priv);
+bail:
+ return FALSE;
+}
+
+Bool
+glamor_poly_text8_nf(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, char *chars, int *final_pos)
+{
+ if (glamor_poly_text(drawable, gc, x, y, count, chars, FALSE, final_pos))
+ return TRUE;
+ if (glamor_ddx_fallback_check_pixmap(drawable) && glamor_ddx_fallback_check_gc(gc))
+ return FALSE;
+ *final_pos = miPolyText8(drawable, gc, x, y, count, chars);
+ return TRUE;
+}
+
+int
+glamor_poly_text8(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, char *chars)
+{
+ int final_pos;
+
+ if (glamor_poly_text(drawable, gc, x, y, count, chars, FALSE, &final_pos))
+ return final_pos;
+ return miPolyText8(drawable, gc, x, y, count, chars);
+}
+
+Bool
+glamor_poly_text16_nf(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, unsigned short *chars, int *final_pos)
+{
+ if (glamor_poly_text(drawable, gc, x, y, count, (char *) chars, TRUE, final_pos))
+ return TRUE;
+
+ if (glamor_ddx_fallback_check_pixmap(drawable) && glamor_ddx_fallback_check_gc(gc))
+ return FALSE;
+ *final_pos = miPolyText16(drawable, gc, x, y, count, chars);
+ return TRUE;
+}
+
+int
+glamor_poly_text16(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, unsigned short *chars)
+{
+ int final_pos;
+
+ if (glamor_poly_text(drawable, gc, x, y, count, (char *) chars, TRUE, &final_pos))
+ return final_pos;
+ return miPolyText16(drawable, gc, x, y, count, chars);
+}
+
+/*
+ * Draw image text, which is always solid in copy mode and has the
+ * background cleared while painting the text. For fonts which have
+ * their bitmap metrics exactly equal to the area to clear, we can use
+ * the accelerated version which paints both fg and bg at the same
+ * time. Otherwise, clear the whole area and then paint the glyphs on
+ * top
+ */
+
+static const glamor_facet glamor_facet_image_text = {
+ .name = "image_text",
+ .version = 130,
+ .vs_vars = vs_vars_text,
+ .vs_exec = vs_exec_text,
+ .fs_vars = fs_vars_text,
+ .fs_exec = fs_exec_text,
+ .source_name = "source",
+ .locations = glamor_program_location_font,
+};
+
+static Bool
+use_image_solid(PixmapPtr pixmap, GCPtr gc, glamor_program *prog, void *arg)
+{
+ return glamor_set_solid(pixmap, gc, FALSE, prog->fg_uniform);
+}
+
+static const glamor_facet glamor_facet_image_fill = {
+ .name = "solid",
+ .fs_exec = " gl_FragColor = fg;\n",
+ .locations = glamor_program_location_fg,
+ .use = use_image_solid,
+};
+
+static Bool
+glamor_te_text_use(PixmapPtr pixmap, GCPtr gc, glamor_program *prog, void *arg)
+{
+ if (!glamor_set_solid(pixmap, gc, FALSE, prog->fg_uniform))
+ return FALSE;
+ glamor_set_color(pixmap, gc->bgPixel, prog->bg_uniform);
+ return TRUE;
+}
+
+static const glamor_facet glamor_facet_te_text = {
+ .name = "te_text",
+ .version = 130,
+ .vs_vars = vs_vars_text,
+ .vs_exec = vs_exec_text,
+ .fs_vars = fs_vars_text,
+ .fs_exec = fs_exec_te,
+ .locations = glamor_program_location_fg | glamor_program_location_bg | glamor_program_location_font,
+ .source_name = "source",
+ .use = glamor_te_text_use,
+};
+
+static Bool
+glamor_image_text(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, char *chars,
+ Bool sixteen)
+{
+ ScreenPtr screen = drawable->pScreen;
+ glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
+ PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
+ glamor_program *prog;
+ glamor_pixmap_private *pixmap_priv;
+ glamor_font_t *glamor_font;
+ const glamor_facet *prim_facet;
+ const glamor_facet *fill_facet;
+ CharInfoPtr charinfo[255]; /* encoding only has 1 byte for count */
+
+ pixmap_priv = glamor_get_pixmap_private(pixmap);
+ if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
+ return FALSE;
+
+ glamor_font = glamor_font_get(drawable->pScreen, gc->font);
+ if (!glamor_font)
+ return FALSE;
+
+ glamor_get_glyphs(gc->font, glamor_font, count, chars, sixteen, charinfo);
+
+ glamor_get_context(glamor_priv);
+
+ if (TERMINALFONT(gc->font))
+ prog = &glamor_priv->te_text_prog;
+ else
+ prog = &glamor_priv->image_text_prog;
+
+ if (prog->failed)
+ goto bail;
+
+ if (!prog->prog) {
+ if (TERMINALFONT(gc->font)) {
+ prim_facet = &glamor_facet_te_text;
+ fill_facet = NULL;
+ } else {
+ prim_facet = &glamor_facet_image_text;
+ fill_facet = &glamor_facet_image_fill;
+ }
+
+ if (!glamor_build_program(screen, prog, prim_facet, fill_facet))
+ goto bail;
+ }
+
+ if (!TERMINALFONT(gc->font)) {
+ int width = 0;
+ int c;
+ RegionRec region;
+ BoxRec box;
+ int off_x, off_y;
+
+ /* Check planemask before drawing background to
+ * bail early if it's not OK
+ */
+ if (!glamor_set_planemask(pixmap, gc->planemask))
+ goto bail;
+ for (c = 0; c < count; c++)
+ if (charinfo[c])
+ width += charinfo[c]->metrics.characterWidth;
+
+ glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
+
+ if (width >= 0) {
+ box.x1 = off_x + drawable->x + x;
+ box.x2 = off_x + drawable->x + x + width;
+ } else {
+ box.x1 = off_x + drawable->x + x + width;
+ box.x2 = off_x + drawable->x + x;
+ }
+ box.y1 = off_y + drawable->y + y - gc->font->info.fontAscent;
+ box.y2 = off_y + drawable->y + y + gc->font->info.fontDescent;
+ RegionInit(&region, &box, 1);
+ RegionIntersect(&region, &region, gc->pCompositeClip);
+ glamor_solid_boxes(pixmap, RegionRects(&region), RegionNumRects(&region), gc->bgPixel);
+ RegionUninit(&region);
+ }
+
+ if (!glamor_use_program(pixmap, gc, prog, NULL))
+ goto bail;
+
+ (void) glamor_text(drawable, gc, glamor_font, prog,
+ x, y, count, chars, charinfo, sixteen);
+
+ glamor_put_context(glamor_priv);
+
+ glamor_priv->state = RENDER_STATE;
+ glamor_priv->render_idle_cnt = 0;
+
+ return TRUE;
+
+bail:
+ glDisable(GL_COLOR_LOGIC_OP);
+ glamor_put_context(glamor_priv);
+ return FALSE;
+}
+
+Bool
+glamor_image_text8_nf(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, char *chars)
+{
+ return glamor_image_text(drawable, gc, x, y, count, chars, FALSE);
+}
+
+void
+glamor_image_text8(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, char *chars)
+{
+ if (!glamor_image_text(drawable, gc, x, y, count, chars, FALSE))
+ miImageText8(drawable, gc, x, y, count, chars);
+}
+
+Bool
+glamor_image_text16_nf(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, unsigned short *chars)
+{
+ return glamor_image_text(drawable, gc, x, y, count, (char *) chars, FALSE);
+}
+
+void
+glamor_image_text16(DrawablePtr drawable, GCPtr gc,
+ int x, int y, int count, unsigned short *chars)
+{
+ if (!glamor_image_text(drawable, gc, x, y, count, (char *) chars, TRUE))
+ miImageText16(drawable, gc, x, y, count, chars);
+}