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xserver/glamor/glamor_core.c

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/*
* Copyright © 2001 Keith Packard
* Copyright © 2008 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
/** @file glamor_core.c
*
* This file covers core X rendering in glamor.
*/
#include <stdlib.h>
#include "glamor_priv.h"
const Bool
glamor_get_drawable_location(const DrawablePtr drawable)
{
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
glamor_screen_private *glamor_priv =
glamor_get_screen_private(drawable->pScreen);
if (pixmap_priv == NULL ||
pixmap_priv->base.gl_fbo == GLAMOR_FBO_UNATTACHED)
return 'm';
if (pixmap_priv->base.fbo->fb == glamor_priv->screen_fbo)
return 's';
else
return 'f';
}
GLint
glamor_compile_glsl_prog(GLenum type, const char *source)
{
GLint ok;
GLint prog;
prog = glCreateShader(type);
glShaderSource(prog, 1, (const GLchar **) &source, NULL);
glCompileShader(prog);
glGetShaderiv(prog, GL_COMPILE_STATUS, &ok);
if (!ok) {
GLchar *info;
GLint size;
glGetShaderiv(prog, GL_INFO_LOG_LENGTH, &size);
info = malloc(size);
if (info) {
glGetShaderInfoLog(prog, size, NULL, info);
ErrorF("Failed to compile %s: %s\n",
type == GL_FRAGMENT_SHADER ? "FS" : "VS", info);
ErrorF("Program source:\n%s", source);
free(info);
}
else
ErrorF("Failed to get shader compilation info.\n");
FatalError("GLSL compile failure\n");
}
return prog;
}
void
glamor_link_glsl_prog(ScreenPtr screen, GLint prog, const char *format, ...)
{
GLint ok;
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
glLinkProgram(prog);
glGetProgramiv(prog, GL_LINK_STATUS, &ok);
if (!ok) {
GLchar *info;
GLint size;
glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &size);
info = malloc(size);
glGetProgramInfoLog(prog, size, NULL, info);
ErrorF("Failed to link: %s\n", info);
FatalError("GLSL link failure\n");
}
if (glamor_priv->has_khr_debug) {
char *label;
va_list va;
va_start(va, format);
XNFvasprintf(&label, format, va);
glObjectLabel(GL_PROGRAM, prog, -1, label);
free(label);
va_end(va);
}
}
/*
* When downloading a unsupported color format to CPU memory,
we need to shuffle the color elements and then use a supported
color format to read it back to CPU memory.
For an example, the picture's format is PICT_b8g8r8a8,
Then the expecting color layout is as below (little endian):
0 1 2 3 : address
a r g b
Now the in GLES2 the supported color format is GL_RGBA, type is
GL_UNSIGNED_TYPE, then we need to shuffle the fragment
color as :
frag_color = sample(texture).argb;
before we use glReadPixel to get it back.
For the uploading process, the shuffle is a revert shuffle.
We still use GL_RGBA, GL_UNSIGNED_BYTE to upload the color
to a texture, then let's see
0 1 2 3 : address
a r g b : correct colors
R G B A : GL_RGBA with GL_UNSIGNED_BYTE
Now we need to shuffle again, the mapping rule is
r = G, g = B, b = A, a = R. Then the uploading shuffle is as
below:
frag_color = sample(texture).gbar;
*/
void
glamor_init_finish_access_shaders(ScreenPtr screen)
{
glamor_screen_private *glamor_priv;
const char *vs_source =
"attribute vec4 v_position;\n"
"attribute vec4 v_texcoord0;\n"
"varying vec2 source_texture;\n"
"void main()\n"
"{\n"
" gl_Position = v_position;\n"
" source_texture = v_texcoord0.xy;\n"
"}\n";
const char *common_source =
GLAMOR_DEFAULT_PRECISION
"varying vec2 source_texture;\n"
"uniform sampler2D sampler;\n"
"uniform int revert;\n"
"uniform int swap_rb;\n"
"#define REVERT_NONE 0\n"
"#define REVERT_NORMAL 1\n"
"#define SWAP_NONE_DOWNLOADING 0\n"
"#define SWAP_DOWNLOADING 1\n"
"#define SWAP_UPLOADING 2\n"
"#define SWAP_NONE_UPLOADING 3\n";
const char *fs_source =
"void main()\n"
"{\n"
" if (revert == REVERT_NONE) \n"
" { \n"
" if ((swap_rb != SWAP_NONE_DOWNLOADING) && (swap_rb != SWAP_NONE_UPLOADING)) \n"
" gl_FragColor = texture2D(sampler, source_texture).bgra;\n"
" else \n"
" gl_FragColor = texture2D(sampler, source_texture).rgba;\n"
" } \n"
" else \n"
" { \n"
" if (swap_rb == SWAP_DOWNLOADING) \n"
" gl_FragColor = texture2D(sampler, source_texture).argb;\n"
" else if (swap_rb == SWAP_NONE_DOWNLOADING)\n"
" gl_FragColor = texture2D(sampler, source_texture).abgr;\n"
" else if (swap_rb == SWAP_UPLOADING)\n"
" gl_FragColor = texture2D(sampler, source_texture).gbar;\n"
" else if (swap_rb == SWAP_NONE_UPLOADING)\n"
" gl_FragColor = texture2D(sampler, source_texture).abgr;\n"
" } \n"
"}\n";
const char *set_alpha_source =
"void main()\n"
"{\n"
" if (revert == REVERT_NONE) \n"
" { \n"
" if ((swap_rb != SWAP_NONE_DOWNLOADING) && (swap_rb != SWAP_NONE_UPLOADING)) \n"
" gl_FragColor = vec4(texture2D(sampler, source_texture).bgr, 1);\n"
" else \n"
" gl_FragColor = vec4(texture2D(sampler, source_texture).rgb, 1);\n"
" } \n"
" else \n"
" { \n"
" if (swap_rb == SWAP_DOWNLOADING) \n"
" gl_FragColor = vec4(1, texture2D(sampler, source_texture).rgb);\n"
" else if (swap_rb == SWAP_NONE_DOWNLOADING)\n"
" gl_FragColor = vec4(1, texture2D(sampler, source_texture).bgr);\n"
" else if (swap_rb == SWAP_UPLOADING)\n"
" gl_FragColor = vec4(texture2D(sampler, source_texture).gba, 1);\n"
" else if (swap_rb == SWAP_NONE_UPLOADING)\n"
" gl_FragColor = vec4(texture2D(sampler, source_texture).abg, 1);\n"
" } \n"
"}\n";
GLint fs_prog, vs_prog, avs_prog, set_alpha_prog;
GLint sampler_uniform_location;
char *source;
glamor_priv = glamor_get_screen_private(screen);
glamor_make_current(glamor_priv);
glamor_priv->finish_access_prog[0] = glCreateProgram();
glamor_priv->finish_access_prog[1] = glCreateProgram();
vs_prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER, vs_source);
XNFasprintf(&source, "%s%s", common_source, fs_source);
fs_prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER, source);
free(source);
glAttachShader(glamor_priv->finish_access_prog[0], vs_prog);
glAttachShader(glamor_priv->finish_access_prog[0], fs_prog);
avs_prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER, vs_source);
XNFasprintf(&source, "%s%s", common_source, set_alpha_source);
set_alpha_prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER,
source);
free(source);
glAttachShader(glamor_priv->finish_access_prog[1], avs_prog);
glAttachShader(glamor_priv->finish_access_prog[1], set_alpha_prog);
glBindAttribLocation(glamor_priv->finish_access_prog[0],
GLAMOR_VERTEX_POS, "v_position");
glBindAttribLocation(glamor_priv->finish_access_prog[0],
GLAMOR_VERTEX_SOURCE, "v_texcoord0");
glamor_link_glsl_prog(screen, glamor_priv->finish_access_prog[0],
"finish access 0");
glBindAttribLocation(glamor_priv->finish_access_prog[1],
GLAMOR_VERTEX_POS, "v_position");
glBindAttribLocation(glamor_priv->finish_access_prog[1],
GLAMOR_VERTEX_SOURCE, "v_texcoord0");
glamor_link_glsl_prog(screen, glamor_priv->finish_access_prog[1],
"finish access 1");
glamor_priv->finish_access_revert[0] =
glGetUniformLocation(glamor_priv->finish_access_prog[0], "revert");
glamor_priv->finish_access_swap_rb[0] =
glGetUniformLocation(glamor_priv->finish_access_prog[0], "swap_rb");
sampler_uniform_location =
glGetUniformLocation(glamor_priv->finish_access_prog[0], "sampler");
glUseProgram(glamor_priv->finish_access_prog[0]);
glUniform1i(sampler_uniform_location, 0);
glUniform1i(glamor_priv->finish_access_revert[0], 0);
glUniform1i(glamor_priv->finish_access_swap_rb[0], 0);
glamor_priv->finish_access_revert[1] =
glGetUniformLocation(glamor_priv->finish_access_prog[1], "revert");
glamor_priv->finish_access_swap_rb[1] =
glGetUniformLocation(glamor_priv->finish_access_prog[1], "swap_rb");
sampler_uniform_location =
glGetUniformLocation(glamor_priv->finish_access_prog[1], "sampler");
glUseProgram(glamor_priv->finish_access_prog[1]);
glUniform1i(glamor_priv->finish_access_revert[1], 0);
glUniform1i(sampler_uniform_location, 0);
glUniform1i(glamor_priv->finish_access_swap_rb[1], 0);
}
void
glamor_fini_finish_access_shaders(ScreenPtr screen)
{
glamor_screen_private *glamor_priv;
glamor_priv = glamor_get_screen_private(screen);
glamor_make_current(glamor_priv);
glDeleteProgram(glamor_priv->finish_access_prog[0]);
glDeleteProgram(glamor_priv->finish_access_prog[1]);
}
GCOps glamor_gc_ops = {
.FillSpans = glamor_fill_spans,
.SetSpans = glamor_set_spans,
.PutImage = glamor_put_image,
.CopyArea = glamor_copy_area,
.CopyPlane = glamor_copy_plane,
.PolyPoint = glamor_poly_point,
.Polylines = glamor_poly_lines,
.PolySegment = glamor_poly_segment,
.PolyRectangle = miPolyRectangle,
.PolyArc = miPolyArc,
.FillPolygon = miFillPolygon,
.PolyFillRect = glamor_poly_fill_rect,
.PolyFillArc = miPolyFillArc,
.PolyText8 = glamor_poly_text8,
.PolyText16 = glamor_poly_text16,
.ImageText8 = glamor_image_text8,
.ImageText16 = glamor_image_text16,
.ImageGlyphBlt = miImageGlyphBlt,
.PolyGlyphBlt = glamor_poly_glyph_blt,
.PushPixels = glamor_push_pixels,
};
/*
* When the stipple is changed or drawn to, invalidate any
* cached copy
*/
static void
glamor_invalidate_stipple(GCPtr gc)
{
glamor_gc_private *gc_priv = glamor_get_gc_private(gc);
if (gc_priv->stipple) {
if (gc_priv->stipple_damage)
DamageUnregister(gc_priv->stipple_damage);
glamor_destroy_pixmap(gc_priv->stipple);
gc_priv->stipple = NULL;
}
}
static void
glamor_stipple_damage_report(DamagePtr damage, RegionPtr region,
void *closure)
{
GCPtr gc = closure;
glamor_invalidate_stipple(gc);
}
static void
glamor_stipple_damage_destroy(DamagePtr damage, void *closure)
{
GCPtr gc = closure;
glamor_gc_private *gc_priv = glamor_get_gc_private(gc);
gc_priv->stipple_damage = NULL;
glamor_invalidate_stipple(gc);
}
void
glamor_track_stipple(GCPtr gc)
{
if (gc->stipple) {
glamor_gc_private *gc_priv = glamor_get_gc_private(gc);
if (!gc_priv->stipple_damage)
gc_priv->stipple_damage = DamageCreate(glamor_stipple_damage_report,
glamor_stipple_damage_destroy,
DamageReportNonEmpty,
TRUE, gc->pScreen, gc);
if (gc_priv->stipple_damage)
DamageRegister(&gc->stipple->drawable, gc_priv->stipple_damage);
}
}
/**
* uxa_validate_gc() sets the ops to glamor's implementations, which may be
* accelerated or may sync the card and fall back to fb.
*/
void
glamor_validate_gc(GCPtr gc, unsigned long changes, DrawablePtr drawable)
{
/* fbValidateGC will do direct access to pixmaps if the tiling has changed.
* Preempt fbValidateGC by doing its work and masking the change out, so
* that we can do the Prepare/finish_access.
*/
#ifdef FB_24_32BIT
if ((changes & GCTile) && fbGetRotatedPixmap(gc)) {
gc->pScreen->DestroyPixmap(fbGetRotatedPixmap(gc));
fbGetRotatedPixmap(gc) = 0;
}
if (gc->fillStyle == FillTiled) {
PixmapPtr old_tile, new_tile;
old_tile = gc->tile.pixmap;
if (old_tile->drawable.bitsPerPixel != drawable->bitsPerPixel) {
new_tile = fbGetRotatedPixmap(gc);
if (!new_tile ||
new_tile->drawable.bitsPerPixel != drawable->bitsPerPixel) {
if (new_tile)
gc->pScreen->DestroyPixmap(new_tile);
/* fb24_32ReformatTile will do direct access of a newly-
* allocated pixmap.
*/
glamor_fallback
("GC %p tile FB_24_32 transformat %p.\n", gc, old_tile);
if (glamor_prepare_access
(&old_tile->drawable, GLAMOR_ACCESS_RO)) {
new_tile =
fb24_32ReformatTile(old_tile, drawable->bitsPerPixel);
glamor_finish_access(&old_tile->drawable);
}
}
if (new_tile) {
fbGetRotatedPixmap(gc) = old_tile;
gc->tile.pixmap = new_tile;
changes |= GCTile;
}
}
}
#endif
if (changes & GCTile) {
if (!gc->tileIsPixel) {
glamor_pixmap_private *pixmap_priv =
glamor_get_pixmap_private(gc->tile.pixmap);
if ((!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
&& FbEvenTile(gc->tile.pixmap->drawable.width *
drawable->bitsPerPixel)) {
glamor_fallback
("GC %p tile changed %p.\n", gc, gc->tile.pixmap);
if (glamor_prepare_access
(&gc->tile.pixmap->drawable, GLAMOR_ACCESS_RW)) {
fbPadPixmap(gc->tile.pixmap);
glamor_finish_access(&gc->tile.pixmap->drawable);
}
}
}
/* Mask out the GCTile change notification, now that we've done FB's
* job for it.
*/
changes &= ~GCTile;
}
if (changes & GCStipple)
glamor_invalidate_stipple(gc);
if (changes & GCStipple && gc->stipple) {
/* We can't inline stipple handling like we do for GCTile because
* it sets fbgc privates.
*/
if (glamor_prepare_access(&gc->stipple->drawable, GLAMOR_ACCESS_RW)) {
fbValidateGC(gc, changes, drawable);
glamor_finish_access(&gc->stipple->drawable);
}
}
else {
fbValidateGC(gc, changes, drawable);
}
if (changes & GCDashList) {
glamor_gc_private *gc_priv = glamor_get_gc_private(gc);
if (gc_priv->dash) {
glamor_destroy_pixmap(gc_priv->dash);
gc_priv->dash = NULL;
}
}
gc->ops = &glamor_gc_ops;
}
void
glamor_destroy_gc(GCPtr gc)
{
glamor_gc_private *gc_priv = glamor_get_gc_private(gc);
if (gc_priv->dash) {
glamor_destroy_pixmap(gc_priv->dash);
gc_priv->dash = NULL;
}
glamor_invalidate_stipple(gc);
if (gc_priv->stipple_damage)
DamageDestroy(gc_priv->stipple_damage);
miDestroyGC(gc);
}
static GCFuncs glamor_gc_funcs = {
glamor_validate_gc,
miChangeGC,
miCopyGC,
glamor_destroy_gc,
miChangeClip,
miDestroyClip,
miCopyClip
};
/**
* exaCreateGC makes a new GC and hooks up its funcs handler, so that
* exaValidateGC() will get called.
*/
int
glamor_create_gc(GCPtr gc)
{
glamor_gc_private *gc_priv = glamor_get_gc_private(gc);
gc_priv->dash = NULL;
gc_priv->stipple = NULL;
if (!fbCreateGC(gc))
return FALSE;
gc->funcs = &glamor_gc_funcs;
return TRUE;
}
RegionPtr
glamor_bitmap_to_region(PixmapPtr pixmap)
{
RegionPtr ret;
glamor_fallback("pixmap %p \n", pixmap);
if (!glamor_prepare_access(&pixmap->drawable, GLAMOR_ACCESS_RO))
return NULL;
ret = fbPixmapToRegion(pixmap);
glamor_finish_access(&pixmap->drawable);
return ret;
}
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