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xserver-multidpi/glamor/glamor_pixmap.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>
* Zhigang Gong <zhigang.gong@linux.intel.com>
*
*/
#include <stdlib.h>
#include "glamor_priv.h"
/**
* Sets the offsets to add to coordinates to make them address the same bits in
* the backing drawable. These coordinates are nonzero only for redirected
* windows.
*/
void
glamor_get_drawable_deltas(DrawablePtr drawable, PixmapPtr pixmap,
int *x, int *y)
{
#ifdef COMPOSITE
if (drawable->type == DRAWABLE_WINDOW) {
*x = -pixmap->screen_x;
*y = -pixmap->screen_y;
return;
}
#endif
*x = 0;
*y = 0;
}
void
glamor_pixmap_init(ScreenPtr screen)
{
}
void
glamor_pixmap_fini(ScreenPtr screen)
{
}
void
glamor_set_destination_pixmap_fbo(glamor_pixmap_fbo *fbo, int x0, int y0,
int width, int height)
{
glamor_make_current(fbo->glamor_priv);
glBindFramebuffer(GL_FRAMEBUFFER, fbo->fb);
glViewport(x0, y0, width, height);
}
void
glamor_set_destination_pixmap_priv_nc(glamor_pixmap_private *pixmap_priv)
{
int w, h;
PIXMAP_PRIV_GET_ACTUAL_SIZE(pixmap_priv, w, h);
glamor_set_destination_pixmap_fbo(pixmap_priv->base.fbo, 0, 0, w, h);
}
int
glamor_set_destination_pixmap_priv(glamor_pixmap_private *pixmap_priv)
{
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
return -1;
glamor_set_destination_pixmap_priv_nc(pixmap_priv);
return 0;
}
int
glamor_set_destination_pixmap(PixmapPtr pixmap)
{
int err;
glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
err = glamor_set_destination_pixmap_priv(pixmap_priv);
return err;
}
Bool
glamor_set_planemask(PixmapPtr pixmap, unsigned long planemask)
{
if (glamor_pm_is_solid(&pixmap->drawable, planemask)) {
return GL_TRUE;
}
glamor_fallback("unsupported planemask %lx\n", planemask);
return GL_FALSE;
}
Bool
glamor_set_alu(ScreenPtr screen, unsigned char alu)
{
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
if (glamor_priv->gl_flavor == GLAMOR_GL_ES2) {
if (alu != GXcopy)
return FALSE;
else
return TRUE;
}
if (alu == GXcopy) {
glDisable(GL_COLOR_LOGIC_OP);
return TRUE;
}
glEnable(GL_COLOR_LOGIC_OP);
switch (alu) {
case GXclear:
glLogicOp(GL_CLEAR);
break;
case GXand:
glLogicOp(GL_AND);
break;
case GXandReverse:
glLogicOp(GL_AND_REVERSE);
break;
case GXandInverted:
glLogicOp(GL_AND_INVERTED);
break;
case GXnoop:
glLogicOp(GL_NOOP);
break;
case GXxor:
glLogicOp(GL_XOR);
break;
case GXor:
glLogicOp(GL_OR);
break;
case GXnor:
glLogicOp(GL_NOR);
break;
case GXequiv:
glLogicOp(GL_EQUIV);
break;
case GXinvert:
glLogicOp(GL_INVERT);
break;
case GXorReverse:
glLogicOp(GL_OR_REVERSE);
break;
case GXcopyInverted:
glLogicOp(GL_COPY_INVERTED);
break;
case GXorInverted:
glLogicOp(GL_OR_INVERTED);
break;
case GXnand:
glLogicOp(GL_NAND);
break;
case GXset:
glLogicOp(GL_SET);
break;
default:
glamor_fallback("unsupported alu %x\n", alu);
return FALSE;
}
return TRUE;
}
/*
* Map picture's format to the correct gl texture format and type.
* no_alpha is used to indicate whehter we need to wire alpha to 1.
*
* Although opengl support A1/GL_BITMAP, we still don't use it
* here, it seems that mesa has bugs when uploading a A1 bitmap.
*
* Return 0 if find a matched texture type. Otherwise return -1.
**/
static int
glamor_get_tex_format_type_from_pictformat_gl(PictFormatShort format,
GLenum *tex_format,
GLenum *tex_type,
int *no_alpha,
int *revert,
int *swap_rb, int is_upload)
{
*no_alpha = 0;
*revert = REVERT_NONE;
*swap_rb = is_upload ? SWAP_NONE_UPLOADING : SWAP_NONE_DOWNLOADING;
switch (format) {
case PICT_a1:
*tex_format = GL_ALPHA;
*tex_type = GL_UNSIGNED_BYTE;
*revert = is_upload ? REVERT_UPLOADING_A1 : REVERT_DOWNLOADING_A1;
break;
case PICT_b8g8r8x8:
*no_alpha = 1;
case PICT_b8g8r8a8:
*tex_format = GL_BGRA;
*tex_type = GL_UNSIGNED_INT_8_8_8_8;
break;
case PICT_x8r8g8b8:
*no_alpha = 1;
case PICT_a8r8g8b8:
*tex_format = GL_BGRA;
*tex_type = GL_UNSIGNED_INT_8_8_8_8_REV;
break;
case PICT_x8b8g8r8:
*no_alpha = 1;
case PICT_a8b8g8r8:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_INT_8_8_8_8_REV;
break;
case PICT_x2r10g10b10:
*no_alpha = 1;
case PICT_a2r10g10b10:
*tex_format = GL_BGRA;
*tex_type = GL_UNSIGNED_INT_2_10_10_10_REV;
break;
case PICT_x2b10g10r10:
*no_alpha = 1;
case PICT_a2b10g10r10:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_INT_2_10_10_10_REV;
break;
case PICT_r5g6b5:
*tex_format = GL_RGB;
*tex_type = GL_UNSIGNED_SHORT_5_6_5;
break;
case PICT_b5g6r5:
*tex_format = GL_RGB;
*tex_type = GL_UNSIGNED_SHORT_5_6_5_REV;
break;
case PICT_x1b5g5r5:
*no_alpha = 1;
case PICT_a1b5g5r5:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
break;
case PICT_x1r5g5b5:
*no_alpha = 1;
case PICT_a1r5g5b5:
*tex_format = GL_BGRA;
*tex_type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
break;
case PICT_a8:
*tex_format = GL_ALPHA;
*tex_type = GL_UNSIGNED_BYTE;
break;
case PICT_x4r4g4b4:
*no_alpha = 1;
case PICT_a4r4g4b4:
*tex_format = GL_BGRA;
*tex_type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
break;
case PICT_x4b4g4r4:
*no_alpha = 1;
case PICT_a4b4g4r4:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
break;
default:
return -1;
}
return 0;
}
#define IS_LITTLE_ENDIAN (IMAGE_BYTE_ORDER == LSBFirst)
static int
glamor_get_tex_format_type_from_pictformat_gles2(PictFormatShort format,
GLenum *tex_format,
GLenum *tex_type,
int *no_alpha,
int *revert,
int *swap_rb, int is_upload)
{
int need_swap_rb = 0;
*no_alpha = 0;
*revert = IS_LITTLE_ENDIAN ? REVERT_NONE : REVERT_NORMAL;
switch (format) {
case PICT_b8g8r8x8:
*no_alpha = 1;
case PICT_b8g8r8a8:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_BYTE;
need_swap_rb = 1;
*revert = IS_LITTLE_ENDIAN ? REVERT_NORMAL : REVERT_NONE;
break;
case PICT_x8r8g8b8:
*no_alpha = 1;
case PICT_a8r8g8b8:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_BYTE;
need_swap_rb = 1;
break;
case PICT_x8b8g8r8:
*no_alpha = 1;
case PICT_a8b8g8r8:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_BYTE;
break;
case PICT_x2r10g10b10:
*no_alpha = 1;
case PICT_a2r10g10b10:
*tex_format = GL_RGBA;
/* glReadPixmap doesn't support GL_UNSIGNED_INT_10_10_10_2.
* we have to use GL_UNSIGNED_BYTE and do the conversion in
* shader latter.*/
*tex_type = GL_UNSIGNED_BYTE;
if (is_upload == 1) {
if (!IS_LITTLE_ENDIAN)
*revert = REVERT_UPLOADING_10_10_10_2;
else
*revert = REVERT_UPLOADING_2_10_10_10;
}
else {
if (!IS_LITTLE_ENDIAN) {
*revert = REVERT_DOWNLOADING_10_10_10_2;
}
else {
*revert = REVERT_DOWNLOADING_2_10_10_10;
}
}
need_swap_rb = 1;
break;
case PICT_x2b10g10r10:
*no_alpha = 1;
case PICT_a2b10g10r10:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_BYTE;
if (is_upload == 1) {
if (!IS_LITTLE_ENDIAN)
*revert = REVERT_UPLOADING_10_10_10_2;
else
*revert = REVERT_UPLOADING_2_10_10_10;
}
else {
if (!IS_LITTLE_ENDIAN) {
*revert = REVERT_DOWNLOADING_10_10_10_2;
}
else {
*revert = REVERT_DOWNLOADING_2_10_10_10;
}
}
break;
case PICT_r5g6b5:
*tex_format = GL_RGB;
*tex_type = GL_UNSIGNED_SHORT_5_6_5;
*revert = IS_LITTLE_ENDIAN ? REVERT_NONE : REVERT_NORMAL;
break;
case PICT_b5g6r5:
*tex_format = GL_RGB;
*tex_type = GL_UNSIGNED_SHORT_5_6_5;
need_swap_rb = IS_LITTLE_ENDIAN ? 1 : 0;;
break;
case PICT_x1b5g5r5:
*no_alpha = 1;
case PICT_a1b5g5r5:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_SHORT_5_5_5_1;
if (IS_LITTLE_ENDIAN) {
*revert =
is_upload ? REVERT_UPLOADING_1_5_5_5 :
REVERT_DOWNLOADING_1_5_5_5;
}
else
*revert = REVERT_NONE;
break;
case PICT_x1r5g5b5:
*no_alpha = 1;
case PICT_a1r5g5b5:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_SHORT_5_5_5_1;
if (IS_LITTLE_ENDIAN) {
*revert =
is_upload ? REVERT_UPLOADING_1_5_5_5 :
REVERT_DOWNLOADING_1_5_5_5;
}
else
*revert = REVERT_NONE;
need_swap_rb = 1;
break;
case PICT_a1:
*tex_format = GL_ALPHA;
*tex_type = GL_UNSIGNED_BYTE;
*revert = is_upload ? REVERT_UPLOADING_A1 : REVERT_DOWNLOADING_A1;
break;
case PICT_a8:
*tex_format = GL_ALPHA;
*tex_type = GL_UNSIGNED_BYTE;
*revert = REVERT_NONE;
break;
case PICT_x4r4g4b4:
*no_alpha = 1;
case PICT_a4r4g4b4:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_SHORT_4_4_4_4;
*revert = IS_LITTLE_ENDIAN ? REVERT_NORMAL : REVERT_NONE;
need_swap_rb = 1;
break;
case PICT_x4b4g4r4:
*no_alpha = 1;
case PICT_a4b4g4r4:
*tex_format = GL_RGBA;
*tex_type = GL_UNSIGNED_SHORT_4_4_4_4;
*revert = IS_LITTLE_ENDIAN ? REVERT_NORMAL : REVERT_NONE;
break;
default:
LogMessageVerb(X_INFO, 0,
"fail to get matched format for %x \n", format);
return -1;
}
if (need_swap_rb)
*swap_rb = is_upload ? SWAP_UPLOADING : SWAP_DOWNLOADING;
else
*swap_rb = is_upload ? SWAP_NONE_UPLOADING : SWAP_NONE_DOWNLOADING;
return 0;
}
static int
glamor_get_tex_format_type_from_pixmap(PixmapPtr pixmap,
GLenum *format,
GLenum *type,
int *no_alpha,
int *revert, int *swap_rb, int is_upload)
{
glamor_pixmap_private *pixmap_priv;
PictFormatShort pict_format;
glamor_screen_private *glamor_priv =
glamor_get_screen_private(pixmap->drawable.pScreen);
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (GLAMOR_PIXMAP_PRIV_IS_PICTURE(pixmap_priv))
pict_format = pixmap_priv->base.picture->format;
else
pict_format = format_for_depth(pixmap->drawable.depth);
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP) {
return glamor_get_tex_format_type_from_pictformat_gl(pict_format,
format, type,
no_alpha,
revert,
swap_rb,
is_upload);
} else {
return glamor_get_tex_format_type_from_pictformat_gles2(pict_format,
format, type,
no_alpha,
revert,
swap_rb,
is_upload);
}
}
static void *
_glamor_color_convert_a1_a8(void *src_bits, void *dst_bits, int w, int h,
int stride, int revert)
{
PictFormatShort dst_format, src_format;
pixman_image_t *dst_image;
pixman_image_t *src_image;
int src_stride;
if (revert == REVERT_UPLOADING_A1) {
src_format = PICT_a1;
dst_format = PICT_a8;
src_stride = PixmapBytePad(w, 1);
}
else {
dst_format = PICT_a1;
src_format = PICT_a8;
src_stride = (((w * 8 + 7) / 8) + 3) & ~3;
}
dst_image = pixman_image_create_bits(dst_format, w, h, dst_bits, stride);
if (dst_image == NULL) {
return NULL;
}
src_image = pixman_image_create_bits(src_format,
w, h, src_bits, src_stride);
if (src_image == NULL) {
pixman_image_unref(dst_image);
return NULL;
}
pixman_image_composite(PictOpSrc, src_image, NULL, dst_image,
0, 0, 0, 0, 0, 0, w, h);
pixman_image_unref(src_image);
pixman_image_unref(dst_image);
return dst_bits;
}
#define ADJUST_BITS(d, src_bits, dst_bits) (((dst_bits) == (src_bits)) ? (d) : \
(((dst_bits) > (src_bits)) ? \
(((d) << ((dst_bits) - (src_bits))) \
+ (( 1 << ((dst_bits) - (src_bits))) >> 1)) \
: ((d) >> ((src_bits) - (dst_bits)))))
#define GLAMOR_DO_CONVERT(src, dst, no_alpha, swap, \
a_shift_src, a_bits_src, \
b_shift_src, b_bits_src, \
g_shift_src, g_bits_src, \
r_shift_src, r_bits_src, \
a_shift, a_bits, \
b_shift, b_bits, \
g_shift, g_bits, \
r_shift, r_bits) \
do { \
typeof(src) a,b,g,r; \
typeof(src) a_mask_src, b_mask_src, g_mask_src, r_mask_src;\
a_mask_src = (((1 << (a_bits_src)) - 1) << a_shift_src);\
b_mask_src = (((1 << (b_bits_src)) - 1) << b_shift_src);\
g_mask_src = (((1 << (g_bits_src)) - 1) << g_shift_src);\
r_mask_src = (((1 << (r_bits_src)) - 1) << r_shift_src);\
if (no_alpha) \
a = (a_mask_src) >> (a_shift_src); \
else \
a = ((src) & (a_mask_src)) >> (a_shift_src); \
b = ((src) & (b_mask_src)) >> (b_shift_src); \
g = ((src) & (g_mask_src)) >> (g_shift_src); \
r = ((src) & (r_mask_src)) >> (r_shift_src); \
a = ADJUST_BITS(a, a_bits_src, a_bits); \
b = ADJUST_BITS(b, b_bits_src, b_bits); \
g = ADJUST_BITS(g, g_bits_src, g_bits); \
r = ADJUST_BITS(r, r_bits_src, r_bits); \
if (swap == 0) \
(*dst) = ((a) << (a_shift)) | ((b) << (b_shift)) | ((g) << (g_shift)) | ((r) << (r_shift)); \
else \
(*dst) = ((a) << (a_shift)) | ((r) << (b_shift)) | ((g) << (g_shift)) | ((b) << (r_shift)); \
} while (0)
static void *
_glamor_color_revert_x2b10g10r10(void *src_bits, void *dst_bits, int w, int h,
int stride, int no_alpha, int revert,
int swap_rb)
{
int x, y;
unsigned int *words, *saved_words, *source_words;
int swap = !(swap_rb == SWAP_NONE_DOWNLOADING ||
swap_rb == SWAP_NONE_UPLOADING);
source_words = src_bits;
words = dst_bits;
saved_words = words;
for (y = 0; y < h; y++) {
DEBUGF("Line %d : ", y);
for (x = 0; x < w; x++) {
unsigned int pixel = source_words[x];
if (revert == REVERT_DOWNLOADING_2_10_10_10)
GLAMOR_DO_CONVERT(pixel, &words[x], no_alpha, swap,
24, 8, 16, 8, 8, 8, 0, 8,
30, 2, 20, 10, 10, 10, 0, 10);
else
GLAMOR_DO_CONVERT(pixel, &words[x], no_alpha, swap,
30, 2, 20, 10, 10, 10, 0, 10,
24, 8, 16, 8, 8, 8, 0, 8);
DEBUGF("%x:%x ", pixel, words[x]);
}
DEBUGF("\n");
words += stride / sizeof(*words);
source_words += stride / sizeof(*words);
}
DEBUGF("\n");
return saved_words;
}
static void *
_glamor_color_revert_x1b5g5r5(void *src_bits, void *dst_bits, int w, int h,
int stride, int no_alpha, int revert, int swap_rb)
{
int x, y;
unsigned short *words, *saved_words, *source_words;
int swap = !(swap_rb == SWAP_NONE_DOWNLOADING ||
swap_rb == SWAP_NONE_UPLOADING);
words = dst_bits;
source_words = src_bits;
saved_words = words;
for (y = 0; y < h; y++) {
DEBUGF("Line %d : ", y);
for (x = 0; x < w; x++) {
unsigned short pixel = source_words[x];
if (revert == REVERT_DOWNLOADING_1_5_5_5)
GLAMOR_DO_CONVERT(pixel, &words[x], no_alpha, swap,
0, 1, 1, 5, 6, 5, 11, 5,
15, 1, 10, 5, 5, 5, 0, 5);
else
GLAMOR_DO_CONVERT(pixel, &words[x], no_alpha, swap,
15, 1, 10, 5, 5, 5, 0, 5,
0, 1, 1, 5, 6, 5, 11, 5);
DEBUGF("%04x:%04x ", pixel, words[x]);
}
DEBUGF("\n");
words += stride / sizeof(*words);
source_words += stride / sizeof(*words);
}
DEBUGF("\n");
return saved_words;
}
/*
* This function is to convert an unsupported color format to/from a
* supported GL format.
* Here are the current scenarios:
*
* @no_alpha:
* If it is set, then we need to wire the alpha value to 1.
* @revert:
REVERT_DOWNLOADING_A1 : convert an Alpha8 buffer to a A1 buffer.
REVERT_UPLOADING_A1 : convert an A1 buffer to an Alpha8 buffer
REVERT_DOWNLOADING_2_10_10_10 : convert r10G10b10X2 to X2B10G10R10
REVERT_UPLOADING_2_10_10_10 : convert X2B10G10R10 to R10G10B10X2
REVERT_DOWNLOADING_1_5_5_5 : convert B5G5R5X1 to X1R5G5B5
REVERT_UPLOADING_1_5_5_5 : convert X1R5G5B5 to B5G5R5X1
@swap_rb: if we have the swap_rb set, then we need to swap the R and B's position.
*
*/
static void *
glamor_color_convert_to_bits(void *src_bits, void *dst_bits, int w, int h,
int stride, int no_alpha, int revert, int swap_rb)
{
if (revert == REVERT_DOWNLOADING_A1 || revert == REVERT_UPLOADING_A1) {
return _glamor_color_convert_a1_a8(src_bits, dst_bits, w, h, stride,
revert);
}
else if (revert == REVERT_DOWNLOADING_2_10_10_10 ||
revert == REVERT_UPLOADING_2_10_10_10) {
return _glamor_color_revert_x2b10g10r10(src_bits, dst_bits, w, h,
stride, no_alpha, revert,
swap_rb);
}
else if (revert == REVERT_DOWNLOADING_1_5_5_5 ||
revert == REVERT_UPLOADING_1_5_5_5) {
return _glamor_color_revert_x1b5g5r5(src_bits, dst_bits, w, h, stride,
no_alpha, revert, swap_rb);
}
else
ErrorF("convert a non-supported mode %x.\n", revert);
return NULL;
}
/**
* Upload pixmap to a specified texture.
* This texture may not be the one attached to it.
**/
static void
__glamor_upload_pixmap_to_texture(PixmapPtr pixmap, unsigned int *tex,
GLenum format,
GLenum type,
int x, int y, int w, int h,
void *bits, int pbo)
{
glamor_screen_private *glamor_priv =
glamor_get_screen_private(pixmap->drawable.pScreen);
int non_sub = 0;
unsigned int iformat = 0;
glamor_make_current(glamor_priv);
if (*tex == 0) {
glGenTextures(1, tex);
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP)
iformat = gl_iformat_for_pixmap(pixmap);
else
iformat = format;
non_sub = 1;
assert(x == 0 && y == 0);
}
glBindTexture(GL_TEXTURE_2D, *tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
assert(pbo || bits != 0);
if (bits == NULL) {
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
}
if (non_sub)
glTexImage2D(GL_TEXTURE_2D, 0, iformat, w, h, 0, format, type, bits);
else
glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, w, h, format, type, bits);
if (bits == NULL)
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
static Bool
_glamor_upload_bits_to_pixmap_texture(PixmapPtr pixmap, GLenum format,
GLenum type, int no_alpha, int revert,
int swap_rb, int x, int y, int w, int h,
int stride, void *bits, int pbo)
{
glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
glamor_screen_private *glamor_priv =
glamor_get_screen_private(pixmap->drawable.pScreen);
static float vertices[8];
static float texcoords[8] = { 0, 1,
1, 1,
1, 0,
0, 0
};
static float texcoords_inv[8] = { 0, 0,
1, 0,
1, 1,
0, 1
};
float *ptexcoords;
float dst_xscale, dst_yscale;
GLuint tex = 0;
int need_flip;
int need_free_bits = 0;
need_flip = !glamor_priv->yInverted;
if (bits == NULL)
goto ready_to_upload;
if (revert > REVERT_NORMAL) {
/* XXX if we are restoring the pixmap, then we may not need to allocate
* new buffer */
void *converted_bits;
if (pixmap->drawable.depth == 1)
stride = (((w * 8 + 7) / 8) + 3) & ~3;
converted_bits = malloc(h * stride);
if (converted_bits == NULL)
return FALSE;
bits = glamor_color_convert_to_bits(bits, converted_bits, w, h,
stride, no_alpha, revert, swap_rb);
if (bits == NULL) {
ErrorF("Failed to convert pixmap no_alpha %d,"
"revert mode %d, swap mode %d\n", no_alpha, revert, swap_rb);
return FALSE;
}
no_alpha = 0;
revert = REVERT_NONE;
swap_rb = SWAP_NONE_UPLOADING;
need_free_bits = TRUE;
}
ready_to_upload:
/* Try fast path firstly, upload the pixmap to the texture attached
* to the fbo directly. */
if (no_alpha == 0
&& revert == REVERT_NONE && swap_rb == SWAP_NONE_UPLOADING && !need_flip
#ifdef WALKAROUND_LARGE_TEXTURE_MAP
&& pixmap_priv->type != GLAMOR_TEXTURE_LARGE
#endif
) {
int fbo_x_off, fbo_y_off;
assert(pixmap_priv->base.fbo->tex);
pixmap_priv_get_fbo_off(pixmap_priv, &fbo_x_off, &fbo_y_off);
assert(x + fbo_x_off >= 0 && y + fbo_y_off >= 0);
assert(x + fbo_x_off + w <= pixmap_priv->base.fbo->width);
assert(y + fbo_y_off + h <= pixmap_priv->base.fbo->height);
__glamor_upload_pixmap_to_texture(pixmap, &pixmap_priv->base.fbo->tex,
format, type,
x + fbo_x_off, y + fbo_y_off, w, h,
bits, pbo);
return TRUE;
}
if (need_flip)
ptexcoords = texcoords;
else
ptexcoords = texcoords_inv;
pixmap_priv_get_dest_scale(pixmap_priv, &dst_xscale, &dst_yscale);
glamor_set_normalize_vcoords(pixmap_priv, dst_xscale,
dst_yscale,
x, y,
x + w, y + h,
glamor_priv->yInverted, vertices);
/* Slow path, we need to flip y or wire alpha to 1. */
glamor_make_current(glamor_priv);
glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_FLOAT,
GL_FALSE, 2 * sizeof(float), vertices);
glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2, GL_FLOAT,
GL_FALSE, 2 * sizeof(float), ptexcoords);
glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
glamor_set_destination_pixmap_priv_nc(pixmap_priv);
__glamor_upload_pixmap_to_texture(pixmap, &tex,
format, type, 0, 0, w, h, bits, pbo);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glUseProgram(glamor_priv->finish_access_prog[no_alpha]);
glUniform1i(glamor_priv->finish_access_revert[no_alpha], revert);
glUniform1i(glamor_priv->finish_access_swap_rb[no_alpha], swap_rb);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
glDeleteTextures(1, &tex);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if (need_free_bits)
free(bits);
return TRUE;
}
/*
* Prepare to upload a pixmap to texture memory.
* no_alpha equals 1 means the format needs to wire alpha to 1.
* Two condtion need to setup a fbo for a pixmap
* 1. !yInverted, we need to do flip if we are not yInverted.
* 2. no_alpha != 0, we need to wire the alpha.
* */
static int
glamor_pixmap_upload_prepare(PixmapPtr pixmap, GLenum format, int no_alpha,
int revert, int swap_rb)
{
int flag = 0;
glamor_pixmap_private *pixmap_priv;
glamor_screen_private *glamor_priv;
glamor_pixmap_fbo *fbo;
GLenum iformat;
pixmap_priv = glamor_get_pixmap_private(pixmap);
glamor_priv = glamor_get_screen_private(pixmap->drawable.pScreen);
if (pixmap_priv->base.gl_fbo != GLAMOR_FBO_UNATTACHED)
return 0;
if (pixmap_priv->base.fbo
&& (pixmap_priv->base.fbo->width < pixmap->drawable.width
|| pixmap_priv->base.fbo->height < pixmap->drawable.height)) {
fbo = glamor_pixmap_detach_fbo(pixmap_priv);
glamor_destroy_fbo(fbo);
}
if (pixmap_priv->base.fbo && pixmap_priv->base.fbo->fb)
return 0;
if (!(no_alpha || (revert == REVERT_NORMAL)
|| (swap_rb != SWAP_NONE_UPLOADING)
|| !glamor_priv->yInverted)) {
/* We don't need a fbo, a simple texture uploading should work. */
flag = GLAMOR_CREATE_FBO_NO_FBO;
}
if ((flag == GLAMOR_CREATE_FBO_NO_FBO
&& pixmap_priv->base.fbo && pixmap_priv->base.fbo->tex)
|| (flag == 0 && pixmap_priv->base.fbo && pixmap_priv->base.fbo->fb))
return 0;
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP)
iformat = gl_iformat_for_pixmap(pixmap);
else
iformat = format;
if (!glamor_pixmap_ensure_fbo(pixmap, iformat, flag))
return -1;
return 0;
}
/*
* upload sub region to a large region.
* */
static void
glamor_put_bits(char *dst_bits, int dst_stride, char *src_bits,
int src_stride, int bpp, int x, int y, int w, int h)
{
int j;
int byte_per_pixel;
byte_per_pixel = bpp / 8;
src_bits += y * src_stride + (x * byte_per_pixel);
for (j = y; j < y + h; j++) {
memcpy(dst_bits, src_bits, w * byte_per_pixel);
src_bits += src_stride;
dst_bits += dst_stride;
}
}
/*
* download sub region from a large region.
*/
static void
glamor_get_bits(char *dst_bits, int dst_stride, char *src_bits,
int src_stride, int bpp, int x, int y, int w, int h)
{
int j;
int byte_per_pixel;
byte_per_pixel = bpp / 8;
dst_bits += y * dst_stride + x * byte_per_pixel;
for (j = y; j < y + h; j++) {
memcpy(dst_bits, src_bits, w * byte_per_pixel);
src_bits += src_stride;
dst_bits += dst_stride;
}
}
Bool
glamor_upload_sub_pixmap_to_texture(PixmapPtr pixmap, int x, int y, int w,
int h, int stride, void *bits, int pbo)
{
GLenum format, type;
int no_alpha, revert, swap_rb;
glamor_pixmap_private *pixmap_priv;
Bool force_clip;
if (glamor_get_tex_format_type_from_pixmap(pixmap,
&format,
&type,
&no_alpha,
&revert, &swap_rb, 1)) {
glamor_fallback("Unknown pixmap depth %d.\n", pixmap->drawable.depth);
return FALSE;
}
if (glamor_pixmap_upload_prepare(pixmap, format, no_alpha, revert, swap_rb))
return FALSE;
pixmap_priv = glamor_get_pixmap_private(pixmap);
force_clip = pixmap_priv->base.glamor_priv->gl_flavor != GLAMOR_GL_DESKTOP
&& !glamor_check_fbo_size(pixmap_priv->base.glamor_priv, w, h);
if (pixmap_priv->type == GLAMOR_TEXTURE_LARGE || force_clip) {
RegionRec region;
BoxRec box;
int n_region;
glamor_pixmap_clipped_regions *clipped_regions;
void *sub_bits;
int i, j;
sub_bits = malloc(h * stride);
if (sub_bits == NULL)
return FALSE;
box.x1 = x;
box.y1 = y;
box.x2 = x + w;
box.y2 = y + h;
RegionInitBoxes(&region, &box, 1);
if (!force_clip)
clipped_regions =
glamor_compute_clipped_regions(pixmap_priv, &region, &n_region,
0, 0, 0);
else
clipped_regions =
glamor_compute_clipped_regions_ext(pixmap_priv, &region,
&n_region,
pixmap_priv->large.block_w,
pixmap_priv->large.block_h,
0,
0);
DEBUGF("prepare upload %dx%d to a large pixmap %p\n", w, h, pixmap);
for (i = 0; i < n_region; i++) {
BoxPtr boxes;
int nbox;
int temp_stride;
void *temp_bits;
assert(pbo == 0);
SET_PIXMAP_FBO_CURRENT(pixmap_priv, clipped_regions[i].block_idx);
boxes = RegionRects(clipped_regions[i].region);
nbox = RegionNumRects(clipped_regions[i].region);
DEBUGF("split to %d boxes\n", nbox);
for (j = 0; j < nbox; j++) {
temp_stride = PixmapBytePad(boxes[j].x2 - boxes[j].x1,
pixmap->drawable.depth);
if (boxes[j].x1 == x && temp_stride == stride) {
temp_bits = (char *) bits + (boxes[j].y1 - y) * stride;
}
else {
temp_bits = sub_bits;
glamor_put_bits(temp_bits, temp_stride, bits, stride,
pixmap->drawable.bitsPerPixel,
boxes[j].x1 - x, boxes[j].y1 - y,
boxes[j].x2 - boxes[j].x1,
boxes[j].y2 - boxes[j].y1);
}
DEBUGF("upload x %d y %d w %d h %d temp stride %d \n",
boxes[j].x1 - x, boxes[j].y1 - y,
boxes[j].x2 - boxes[j].x1,
boxes[j].y2 - boxes[j].y1, temp_stride);
if (_glamor_upload_bits_to_pixmap_texture
(pixmap, format, type, no_alpha, revert, swap_rb,
boxes[j].x1, boxes[j].y1, boxes[j].x2 - boxes[j].x1,
boxes[j].y2 - boxes[j].y1, temp_stride, temp_bits,
pbo) == FALSE) {
RegionUninit(&region);
free(sub_bits);
assert(0);
return FALSE;
}
}
RegionDestroy(clipped_regions[i].region);
}
free(sub_bits);
free(clipped_regions);
RegionUninit(&region);
return TRUE;
}
else
return _glamor_upload_bits_to_pixmap_texture(pixmap, format, type,
no_alpha, revert, swap_rb,
x, y, w, h, stride, bits,
pbo);
}
enum glamor_pixmap_status
glamor_upload_pixmap_to_texture(PixmapPtr pixmap)
{
glamor_pixmap_private *pixmap_priv;
void *data;
int pbo;
int ret;
pixmap_priv = glamor_get_pixmap_private(pixmap);
if ((pixmap_priv->base.fbo)
&& (pixmap_priv->base.fbo->pbo_valid)) {
data = NULL;
pbo = pixmap_priv->base.fbo->pbo;
}
else {
data = pixmap->devPrivate.ptr;
pbo = 0;
}
if (glamor_upload_sub_pixmap_to_texture(pixmap, 0, 0,
pixmap->drawable.width,
pixmap->drawable.height,
pixmap->devKind, data, pbo))
ret = GLAMOR_UPLOAD_DONE;
else
ret = GLAMOR_UPLOAD_FAILED;
return ret;
}
void
glamor_restore_pixmap_to_texture(PixmapPtr pixmap)
{
if (glamor_upload_pixmap_to_texture(pixmap) != GLAMOR_UPLOAD_DONE)
LogMessage(X_WARNING, "Failed to restore pixmap to texture.\n");
}
/*
* as gles2 only support a very small set of color format and
* type when do glReadPixel,
* Before we use glReadPixels to get back a textured pixmap,
* Use shader to convert it to a supported format and thus
* get a new temporary pixmap returned.
* */
glamor_pixmap_fbo *
glamor_es2_pixmap_read_prepare(PixmapPtr source, int x, int y, int w, int h,
GLenum format, GLenum type, int no_alpha,
int revert, int swap_rb)
{
glamor_pixmap_private *source_priv;
glamor_screen_private *glamor_priv;
ScreenPtr screen;
glamor_pixmap_fbo *temp_fbo;
float temp_xscale, temp_yscale, source_xscale, source_yscale;
static float vertices[8];
static float texcoords[8];
screen = source->drawable.pScreen;
glamor_priv = glamor_get_screen_private(screen);
source_priv = glamor_get_pixmap_private(source);
temp_fbo = glamor_create_fbo(glamor_priv, w, h, format, 0);
if (temp_fbo == NULL)
return NULL;
glamor_make_current(glamor_priv);
temp_xscale = 1.0 / w;
temp_yscale = 1.0 / h;
glamor_set_normalize_vcoords((struct glamor_pixmap_private *) NULL,
temp_xscale, temp_yscale, 0, 0, w, h,
glamor_priv->yInverted, vertices);
glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_FLOAT, GL_FALSE,
2 * sizeof(float), vertices);
glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
pixmap_priv_get_scale(source_priv, &source_xscale, &source_yscale);
glamor_set_normalize_tcoords(source_priv, source_xscale,
source_yscale,
x, y,
x + w, y + h,
glamor_priv->yInverted, texcoords);
glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2, GL_FLOAT, GL_FALSE,
2 * sizeof(float), texcoords);
glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, source_priv->base.fbo->tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glamor_set_destination_pixmap_fbo(temp_fbo, 0, 0, w, h);
glUseProgram(glamor_priv->finish_access_prog[no_alpha]);
glUniform1i(glamor_priv->finish_access_revert[no_alpha], revert);
glUniform1i(glamor_priv->finish_access_swap_rb[no_alpha], swap_rb);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
return temp_fbo;
}
/*
* Download a sub region of pixmap to a specified memory region.
* The pixmap must have a valid FBO, otherwise return a NULL.
* */
static void *
_glamor_download_sub_pixmap_to_cpu(PixmapPtr pixmap, GLenum format,
GLenum type, int no_alpha,
int revert, int swap_rb,
int x, int y, int w, int h,
int stride, void *bits, int pbo,
glamor_access_t access)
{
glamor_pixmap_private *pixmap_priv;
GLenum gl_access = 0, gl_usage = 0;
void *data, *read;
glamor_screen_private *glamor_priv =
glamor_get_screen_private(pixmap->drawable.pScreen);
glamor_pixmap_fbo *temp_fbo = NULL;
int need_post_conversion = 0;
int need_free_data = 0;
int fbo_x_off, fbo_y_off;
data = bits;
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
return NULL;
switch (access) {
case GLAMOR_ACCESS_RO:
gl_access = GL_READ_ONLY;
gl_usage = GL_STREAM_READ;
break;
case GLAMOR_ACCESS_RW:
gl_access = GL_READ_WRITE;
gl_usage = GL_DYNAMIC_DRAW;
break;
default:
ErrorF("Glamor: Invalid access code. %d\n", access);
assert(0);
}
glamor_set_destination_pixmap_priv_nc(pixmap_priv);
need_post_conversion = (revert > REVERT_NORMAL);
if (need_post_conversion) {
if (pixmap->drawable.depth == 1) {
int temp_stride;
temp_stride = (((w * 8 + 7) / 8) + 3) & ~3;
data = malloc(temp_stride * h);
if (data == NULL)
return NULL;
need_free_data = 1;
}
}
pixmap_priv_get_fbo_off(pixmap_priv, &fbo_x_off, &fbo_y_off);
if (glamor_priv->gl_flavor == GLAMOR_GL_ES2
&& !need_post_conversion
&& (swap_rb != SWAP_NONE_DOWNLOADING || revert != REVERT_NONE)) {
if (!(temp_fbo = glamor_es2_pixmap_read_prepare(pixmap, x, y, w, h,
format, type, no_alpha,
revert, swap_rb))) {
free(data);
return NULL;
}
x = 0;
y = 0;
fbo_x_off = 0;
fbo_y_off = 0;
}
glamor_make_current(glamor_priv);
glPixelStorei(GL_PACK_ALIGNMENT, 4);
if (glamor_priv->has_pack_invert || glamor_priv->yInverted) {
if (!glamor_priv->yInverted) {
assert(glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP);
glPixelStorei(GL_PACK_INVERT_MESA, 1);
}
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP && data == NULL) {
assert(pbo > 0);
glBindBuffer(GL_PIXEL_PACK_BUFFER, pbo);
glBufferData(GL_PIXEL_PACK_BUFFER, stride * h, NULL, gl_usage);
}
glReadPixels(x + fbo_x_off, y + fbo_y_off, w, h, format, type, data);
if (!glamor_priv->yInverted) {
assert(glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP);
glPixelStorei(GL_PACK_INVERT_MESA, 0);
}
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP && bits == NULL) {
bits = glMapBuffer(GL_PIXEL_PACK_BUFFER, gl_access);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
}
}
else {
unsigned int temp_pbo;
int yy;
glamor_make_current(glamor_priv);
glGenBuffers(1, &temp_pbo);
glBindBuffer(GL_PIXEL_PACK_BUFFER, temp_pbo);
glBufferData(GL_PIXEL_PACK_BUFFER, stride * h, NULL, GL_STREAM_READ);
glReadPixels(x + fbo_x_off, y + fbo_y_off, w, h, format, type, 0);
read = glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY);
for (yy = 0; yy < pixmap->drawable.height; yy++)
memcpy((char *) data + yy * stride,
(char *) read + (h - yy - 1) * stride, stride);
glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
glDeleteBuffers(1, &temp_pbo);
}
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if (need_post_conversion) {
/* As OpenGL desktop version never enters here.
* Don't need to consider if the pbo is valid.*/
bits = glamor_color_convert_to_bits(data, bits,
w, h,
stride, no_alpha, revert, swap_rb);
}
if (temp_fbo != NULL)
glamor_destroy_fbo(temp_fbo);
if (need_free_data)
free(data);
return bits;
}
void *
glamor_download_sub_pixmap_to_cpu(PixmapPtr pixmap, int x, int y, int w, int h,
int stride, void *bits, int pbo,
glamor_access_t access)
{
GLenum format, type;
int no_alpha, revert, swap_rb;
glamor_pixmap_private *pixmap_priv;
Bool force_clip;
if (glamor_get_tex_format_type_from_pixmap(pixmap,
&format,
&type,
&no_alpha,
&revert, &swap_rb, 0)) {
glamor_fallback("Unknown pixmap depth %d.\n", pixmap->drawable.depth);
return NULL;
}
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
return NULL;
force_clip = pixmap_priv->base.glamor_priv->gl_flavor != GLAMOR_GL_DESKTOP
&& !glamor_check_fbo_size(pixmap_priv->base.glamor_priv, w, h);
if (pixmap_priv->type == GLAMOR_TEXTURE_LARGE || force_clip) {
RegionRec region;
BoxRec box;
int n_region;
glamor_pixmap_clipped_regions *clipped_regions;
void *sub_bits;
int i, j;
sub_bits = malloc(h * stride);
if (sub_bits == NULL)
return FALSE;
box.x1 = x;
box.y1 = y;
box.x2 = x + w;
box.y2 = y + h;
RegionInitBoxes(&region, &box, 1);
if (!force_clip)
clipped_regions =
glamor_compute_clipped_regions(pixmap_priv, &region, &n_region,
0, 0, 0);
else
clipped_regions =
glamor_compute_clipped_regions_ext(pixmap_priv, &region,
&n_region,
pixmap_priv->large.block_w,
pixmap_priv->large.block_h,
0,
0);
DEBUGF("start download large pixmap %p %dx%d \n", pixmap, w, h);
for (i = 0; i < n_region; i++) {
BoxPtr boxes;
int nbox;
int temp_stride;
void *temp_bits;
assert(pbo == 0);
SET_PIXMAP_FBO_CURRENT(pixmap_priv, clipped_regions[i].block_idx);
boxes = RegionRects(clipped_regions[i].region);
nbox = RegionNumRects(clipped_regions[i].region);
for (j = 0; j < nbox; j++) {
temp_stride = PixmapBytePad(boxes[j].x2 - boxes[j].x1,
pixmap->drawable.depth);
if (boxes[j].x1 == x && temp_stride == stride) {
temp_bits = (char *) bits + (boxes[j].y1 - y) * stride;
}
else {
temp_bits = sub_bits;
}
DEBUGF("download x %d y %d w %d h %d temp stride %d \n",
boxes[j].x1, boxes[j].y1,
boxes[j].x2 - boxes[j].x1,
boxes[j].y2 - boxes[j].y1, temp_stride);
/* For large pixmap, we don't support pbo currently. */
assert(pbo == 0);
if (_glamor_download_sub_pixmap_to_cpu
(pixmap, format, type, no_alpha, revert, swap_rb,
boxes[j].x1, boxes[j].y1, boxes[j].x2 - boxes[j].x1,
boxes[j].y2 - boxes[j].y1, temp_stride, temp_bits, pbo,
access) == FALSE) {
RegionUninit(&region);
free(sub_bits);
assert(0);
return NULL;
}
if (boxes[j].x1 != x || temp_stride != stride)
glamor_get_bits(bits, stride, temp_bits, temp_stride,
pixmap->drawable.bitsPerPixel,
boxes[j].x1 - x, boxes[j].y1 - y,
boxes[j].x2 - boxes[j].x1,
boxes[j].y2 - boxes[j].y1);
}
RegionDestroy(clipped_regions[i].region);
}
free(sub_bits);
free(clipped_regions);
RegionUninit(&region);
return bits;
}
else
return _glamor_download_sub_pixmap_to_cpu(pixmap, format, type,
no_alpha, revert, swap_rb, x,
y, w, h, stride, bits, pbo,
access);
}
/**
* Move a pixmap to CPU memory.
* The input data is the pixmap's fbo.
* The output data is at pixmap->devPrivate.ptr. We always use pbo
* to read the fbo and then map it to va. If possible, we will use
* it directly as devPrivate.ptr.
* If successfully download a fbo to cpu then return TRUE.
* Otherwise return FALSE.
**/
Bool
glamor_download_pixmap_to_cpu(PixmapPtr pixmap, glamor_access_t access)
{
glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
unsigned int stride;
void *data = NULL, *dst;
glamor_screen_private *glamor_priv =
glamor_get_screen_private(pixmap->drawable.pScreen);
int pbo = 0;
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
return TRUE;
glamor_debug_output(GLAMOR_DEBUG_TEXTURE_DOWNLOAD,
"Downloading pixmap %p %dx%d depth%d\n",
pixmap,
pixmap->drawable.width,
pixmap->drawable.height, pixmap->drawable.depth);
stride = pixmap->devKind;
if (glamor_priv->gl_flavor == GLAMOR_GL_ES2
|| (!glamor_priv->has_pack_invert && !glamor_priv->yInverted)
|| pixmap_priv->type == GLAMOR_TEXTURE_LARGE) {
data = malloc(stride * pixmap->drawable.height);
}
else {
glamor_make_current(glamor_priv);
if (pixmap_priv->base.fbo->pbo == 0)
glGenBuffers(1, &pixmap_priv->base.fbo->pbo);
pbo = pixmap_priv->base.fbo->pbo;
}
if (pixmap_priv->type == GLAMOR_TEXTURE_DRM) {
stride = PixmapBytePad(pixmap->drawable.width, pixmap->drawable.depth);
pixmap_priv->base.drm_stride = pixmap->devKind;
pixmap->devKind = stride;
}
dst = glamor_download_sub_pixmap_to_cpu(pixmap, 0, 0,
pixmap->drawable.width,
pixmap->drawable.height,
pixmap->devKind, data, pbo, access);
if (!dst) {
if (data)
free(data);
return FALSE;
}
if (pbo != 0)
pixmap_priv->base.fbo->pbo_valid = 1;
pixmap_priv->base.gl_fbo = GLAMOR_FBO_DOWNLOADED;
pixmap->devPrivate.ptr = dst;
return TRUE;
}
/* fixup a fbo to the exact size as the pixmap. */
/* XXX LARGE pixmap? */
Bool
glamor_fixup_pixmap_priv(ScreenPtr screen, glamor_pixmap_private *pixmap_priv)
{
glamor_pixmap_fbo *old_fbo;
glamor_pixmap_fbo *new_fbo = NULL;
PixmapPtr scratch = NULL;
glamor_pixmap_private *scratch_priv;
DrawablePtr drawable;
GCPtr gc = NULL;
int ret = FALSE;
drawable = &pixmap_priv->base.pixmap->drawable;
if (!GLAMOR_PIXMAP_FBO_NOT_EXACT_SIZE(pixmap_priv))
return TRUE;
old_fbo = pixmap_priv->base.fbo;
if (!old_fbo)
return FALSE;
gc = GetScratchGC(drawable->depth, screen);
if (!gc)
goto fail;
scratch = glamor_create_pixmap(screen, drawable->width, drawable->height,
drawable->depth, GLAMOR_CREATE_PIXMAP_FIXUP);
scratch_priv = glamor_get_pixmap_private(scratch);
if (!scratch_priv->base.fbo)
goto fail;
ValidateGC(&scratch->drawable, gc);
glamor_copy_area(drawable,
&scratch->drawable,
gc, 0, 0, drawable->width, drawable->height, 0, 0);
old_fbo = glamor_pixmap_detach_fbo(pixmap_priv);
new_fbo = glamor_pixmap_detach_fbo(scratch_priv);
glamor_pixmap_attach_fbo(pixmap_priv->base.pixmap, new_fbo);
glamor_pixmap_attach_fbo(scratch, old_fbo);
DEBUGF("old %dx%d type %d\n",
drawable->width, drawable->height, pixmap_priv->type);
DEBUGF("copy tex %d %dx%d to tex %d %dx%d \n",
old_fbo->tex, old_fbo->width, old_fbo->height, new_fbo->tex,
new_fbo->width, new_fbo->height);
ret = TRUE;
fail:
if (gc)
FreeScratchGC(gc);
if (scratch)
glamor_destroy_pixmap(scratch);
return ret;
}
/*
* We may use this function to reduce a large pixmap to a small sub
* pixmap. Two scenarios currently:
* 1. When fallback a large textured pixmap to CPU but we do need to
* do rendering within a small sub region, then we can just get a
* sub region.
*
* 2. When uploading a large pixmap to texture but we only need to
* use part of the source/mask picture. As glTexImage2D will be more
* efficient to upload a contingent region rather than a sub block
* in a large buffer. We use this function to gather the sub region
* to a contingent sub pixmap.
*
* The sub-pixmap must have the same format as the source pixmap.
*
* */
PixmapPtr
glamor_get_sub_pixmap(PixmapPtr pixmap, int x, int y, int w, int h,
glamor_access_t access)
{
glamor_screen_private *glamor_priv;
PixmapPtr sub_pixmap;
glamor_pixmap_private *sub_pixmap_priv, *pixmap_priv;
void *data;
int pbo;
int flag;
if (x < 0 || y < 0)
return NULL;
w = (x + w) > pixmap->drawable.width ? (pixmap->drawable.width - x) : w;
h = (y + h) > pixmap->drawable.height ? (pixmap->drawable.height - y) : h;
glamor_priv = glamor_get_screen_private(pixmap->drawable.pScreen);
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
return NULL;
if (glamor_priv->gl_flavor == GLAMOR_GL_ES2 ||
pixmap_priv->type == GLAMOR_TEXTURE_LARGE)
flag = GLAMOR_CREATE_PIXMAP_CPU;
else
flag = GLAMOR_CREATE_PIXMAP_MAP;
sub_pixmap = glamor_create_pixmap(pixmap->drawable.pScreen, w, h,
pixmap->drawable.depth, flag);
if (sub_pixmap == NULL)
return NULL;
sub_pixmap_priv = glamor_get_pixmap_private(sub_pixmap);
pbo =
sub_pixmap_priv ? (sub_pixmap_priv->base.fbo ? sub_pixmap_priv->base.
fbo->pbo : 0) : 0;
if (pixmap_priv->base.is_picture) {
sub_pixmap_priv->base.picture = pixmap_priv->base.picture;
sub_pixmap_priv->base.is_picture = pixmap_priv->base.is_picture;
}
if (pbo)
data = NULL;
else
data = sub_pixmap->devPrivate.ptr;
data =
glamor_download_sub_pixmap_to_cpu(pixmap, x, y, w, h,
sub_pixmap->devKind, data, pbo,
access);
if (data == NULL) {
fbDestroyPixmap(sub_pixmap);
return NULL;
}
if (pbo) {
assert(sub_pixmap->devPrivate.ptr == NULL);
sub_pixmap->devPrivate.ptr = data;
sub_pixmap_priv->base.fbo->pbo_valid = 1;
}
#if 0
struct pixman_box16 box;
PixmapPtr new_sub_pixmap;
int dx, dy;
box.x1 = 0;
box.y1 = 0;
box.x2 = w;
box.y2 = h;
dx = x;
dy = y;
new_sub_pixmap = glamor_create_pixmap(pixmap->drawable.pScreen, w, h,
pixmap->drawable.depth,
GLAMOR_CREATE_PIXMAP_CPU);
glamor_copy_n_to_n(&pixmap->drawable, &new_sub_pixmap->drawable, NULL, &box,
1, dx, dy, 0, 0, 0, NULL);
glamor_compare_pixmaps(new_sub_pixmap, sub_pixmap, 0, 0, w, h, 1, 1);
#endif
return sub_pixmap;
}
void
glamor_put_sub_pixmap(PixmapPtr sub_pixmap, PixmapPtr pixmap, int x, int y,
int w, int h, glamor_access_t access)
{
void *bits;
int pbo;
glamor_pixmap_private *sub_pixmap_priv;
if (access != GLAMOR_ACCESS_RO) {
sub_pixmap_priv = glamor_get_pixmap_private(sub_pixmap);
if (sub_pixmap_priv->base.fbo && sub_pixmap_priv->base.fbo->pbo_valid) {
bits = NULL;
pbo = sub_pixmap_priv->base.fbo->pbo;
}
else {
bits = sub_pixmap->devPrivate.ptr;
pbo = 0;
}
assert(x >= 0 && y >= 0);
w = (w > sub_pixmap->drawable.width) ? sub_pixmap->drawable.width : w;
h = (h > sub_pixmap->drawable.height) ? sub_pixmap->drawable.height : h;
glamor_upload_sub_pixmap_to_texture(pixmap, x, y, w, h,
sub_pixmap->devKind, bits, pbo);
}
glamor_destroy_pixmap(sub_pixmap);
}
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