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/*
* Copyright © 2009 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>
*
*/
/** @file glamor_putaimge.c
*
* XPutImage implementation
*/
#include "glamor_priv.h"
void
glamor_init_putimage_shaders(ScreenPtr screen)
{
#if 0
glamor_screen_private *glamor_priv =
glamor_get_screen_private(screen);
const char *xybitmap_vs =
"uniform float x_bias;\n" "uniform float x_scale;\n"
"uniform float y_bias;\n" "uniform float y_scale;\n"
"varying vec2 bitmap_coords;\n" "void main()\n" "{\n"
" gl_Position = vec4((gl_Vertex.x + x_bias) * x_scale,\n"
" (gl_Vertex.y + y_bias) * y_scale,\n"
" 0,\n"
" 1);\n"
" bitmap_coords = gl_MultiTexCoord0.xy;\n" "}\n";
const char *xybitmap_fs =
"uniform vec4 fg, bg;\n" "varying vec2 bitmap_coords;\n"
"uniform sampler2D bitmap_sampler;\n" "void main()\n" "{\n"
" float bitmap_value = texture2D(bitmap_sampler,\n"
" bitmap_coords).x;\n"
" gl_FragColor = mix(bg, fg, bitmap_value);\n" "}\n";
GLint fs_prog, vs_prog, prog;
GLint sampler_uniform_location;
if (!GLEW_ARB_fragment_shader)
return;
prog = dispatch->glCreateProgram();
vs_prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER, xybitmap_vs);
fs_prog =
glamor_compile_glsl_prog(GL_FRAGMENT_SHADER, xybitmap_fs);
dispatch->glAttachShader(prog, vs_prog);
dispatch->glAttachShader(prog, fs_prog);
glamor_link_glsl_prog(prog);
dispatch->glUseProgram(prog);
sampler_uniform_location =
dispatch->glGetUniformLocation(prog, "bitmap_sampler");
dispatch->glUniform1i(sampler_uniform_location, 0);
glamor_priv->put_image_xybitmap_fg_uniform_location =
dispatch->glGetUniformLocation(prog, "fg");
glamor_priv->put_image_xybitmap_bg_uniform_location =
dispatch->glGetUniformLocation(prog, "bg");
glamor_get_transform_uniform_locations(prog,
&glamor_priv->put_image_xybitmap_transform);
glamor_priv->put_image_xybitmap_prog = prog;
dispatch->glUseProgram(0);
#endif
}
/* Do an XYBitmap putimage. The bits are byte-aligned rows of bitmap
* data (where each row starts at a bit index of left_pad), and the
* destination gets filled with the gc's fg color where the bitmap is set
* and the bg color where the bitmap is unset.
*
* Implement this by passing the bitmap right through to GL, and sampling
* it to choose between fg and bg in the fragment shader. The driver may
* be exploding the bitmap up to be an 8-bit alpha texture, in which
* case we might be better off just doing the fg/bg choosing in the CPU
* and just draw the resulting texture to the destination.
*/
#if 0
static int
y_flip(PixmapPtr pixmap, int y)
{
ScreenPtr screen = pixmap->drawable.pScreen;
PixmapPtr screen_pixmap = screen->GetScreenPixmap(screen);
if (pixmap == screen_pixmap)
return (pixmap->drawable.height - 1) - y;
else
return y;
}
static void
glamor_put_image_xybitmap(DrawablePtr drawable, GCPtr gc,
int x, int y, int w, int h, int left_pad,
int image_format, char *bits)
{
ScreenPtr screen = drawable->pScreen;
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_screen_private *glamor_priv =
glamor_get_screen_private(screen);
float fg[4], bg[4];
GLuint tex;
unsigned int stride = PixmapBytePad(1, w + left_pad);
RegionPtr clip;
BoxPtr box;
int nbox;
float dest_coords[8];
const float bitmap_coords[8] = {
0.0, 0.0,
1.0, 0.0,
1.0, 1.0,
0.0, 1.0,
};
GLfloat xscale, yscale;
glamor_pixmap_private *pixmap_priv;
pixmap_priv = glamor_get_pixmap_private(pixmap);
pixmap_priv_get_scale(pixmap_priv, &xscale, &yscale);
glamor_set_normalize_vcoords(xscale, yscale,
x, y,
x + w, y + h,
glamor_priv->yInverted, dest_coords);
glamor_fallback("glamor_put_image_xybitmap: disabled\n");
goto fail;
if (glamor_priv->put_image_xybitmap_prog == 0) {
ErrorF("no program for xybitmap putimage\n");
goto fail;
}
glamor_set_alu(gc->alu);
if (!glamor_set_planemask(pixmap, gc->planemask))
goto fail;
dispatch->glUseProgram(glamor_priv->put_image_xybitmap_prog);
glamor_get_color_4f_from_pixel(pixmap, gc->fgPixel, fg);
dispatch->glUniform4fv
(glamor_priv->put_image_xybitmap_fg_uniform_location, 1, fg);
glamor_get_color_4f_from_pixel(pixmap, gc->bgPixel, bg);
dispatch->glUniform4fv
(glamor_priv->put_image_xybitmap_bg_uniform_location, 1, bg);
dispatch->glGenTextures(1, &tex);
dispatch->glActiveTexture(GL_TEXTURE0);
dispatch->glEnable(GL_TEXTURE_2D);
dispatch->glBindTexture(GL_TEXTURE_2D, tex);
dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
dispatch->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
dispatch->glPixelStorei(GL_UNPACK_ROW_LENGTH, stride * 8);
dispatch->glPixelStorei(GL_UNPACK_SKIP_PIXELS, left_pad);
dispatch->glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA,
w, h, 0, GL_COLOR_INDEX, GL_BITMAP, bits);
dispatch->glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
dispatch->glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
/* Now that we've set up our bitmap texture and the shader, shove
* the destination rectangle through the cliprects and run the
* shader on the resulting fragments.
*/
dispatch->glVertexPointer(2, GL_FLOAT, 0, dest_coords);
dispatch->glEnableClientState(GL_VERTEX_ARRAY);
dispatch->glClientActiveTexture(GL_TEXTURE0);
dispatch->glTexCoordPointer(2, GL_FLOAT, 0, bitmap_coords);
dispatch->glEnableClientState(GL_TEXTURE_COORD_ARRAY);
dispatch->glEnable(GL_SCISSOR_TEST);
clip = fbGetCompositeClip(gc);
for (nbox = REGION_NUM_RECTS(clip),
box = REGION_RECTS(clip); nbox--; box++) {
int x1 = x;
int y1 = y;
int x2 = x + w;
int y2 = y + h;
if (x1 < box->x1)
x1 = box->x1;
if (y1 < box->y1)
y1 = box->y1;
if (x2 > box->x2)
x2 = box->x2;
if (y2 > box->y2)
y2 = box->y2;
if (x1 >= x2 || y1 >= y2)
continue;
dispatch->glScissor(box->x1,
y_flip(pixmap, box->y1),
box->x2 - box->x1, box->y2 - box->y1);
dispatch->glDrawArrays(GL_QUADS, 0, 4);
}
dispatch->glDisable(GL_SCISSOR_TEST);
glamor_set_alu(GXcopy);
glamor_set_planemask(pixmap, ~0);
dispatch->glDeleteTextures(1, &tex);
dispatch->glDisable(GL_TEXTURE_2D);
dispatch->glDisableClientState(GL_VERTEX_ARRAY);
dispatch->glDisableClientState(GL_TEXTURE_COORD_ARRAY);
return;
glamor_set_alu(GXcopy);
glamor_set_planemask(pixmap, ~0);
glamor_fallback(": to %p (%c)\n",
drawable, glamor_get_drawable_location(drawable));
fail:
if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RW)) {
fbPutImage(drawable, gc, 1, x, y, w, h, left_pad, XYBitmap,
bits);
glamor_finish_access(drawable, GLAMOR_ACCESS_RW);
}
}
#endif
void
glamor_fini_putimage_shaders(ScreenPtr screen)
{
}
static Bool
_glamor_put_image(DrawablePtr drawable, GCPtr gc, int depth, int x, int y,
int w, int h, int left_pad, int image_format, char *bits, Bool fallback)
{
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_pixmap_private *pixmap_priv =
glamor_get_pixmap_private(pixmap);
RegionPtr clip;
int x_off, y_off;
Bool ret = FALSE;
PixmapPtr temp_pixmap, sub_pixmap;
glamor_pixmap_private *temp_pixmap_priv;
BoxRec box;
glamor_get_drawable_deltas(drawable, pixmap, &x_off, &y_off);
clip = fbGetCompositeClip(gc);
if (image_format == XYBitmap) {
assert(depth == 1);
goto fail;
}
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) {
glamor_fallback("has no fbo.\n");
goto fail;
}
if (image_format != ZPixmap) {
glamor_fallback("non-ZPixmap\n");
goto fail;
}
if (!glamor_set_planemask(pixmap, gc->planemask)) {
goto fail;
}
/* create a temporary pixmap and upload the bits to that
* pixmap, then apply clip copy it to the destination pixmap.*/
box.x1 = x + drawable->x;
box.y1 = y + drawable->y;
box.x2 = x + w + drawable->x;
box.y2 = y + h + drawable->y;
if ((clip != NULL && RegionContainsRect(clip, &box) != rgnIN)
|| gc->alu != GXcopy) {
temp_pixmap = glamor_create_pixmap(drawable->pScreen, w, h, depth, 0);
if (temp_pixmap == NULL)
goto fail;
temp_pixmap_priv = glamor_get_pixmap_private(temp_pixmap);
if (GLAMOR_PIXMAP_PRIV_IS_PICTURE(pixmap_priv)) {
temp_pixmap_priv->base.picture = pixmap_priv->base.picture;
temp_pixmap_priv->base.is_picture = pixmap_priv->base.is_picture;
}
glamor_upload_sub_pixmap_to_texture(temp_pixmap, 0, 0, w, h,
pixmap->devKind, bits, 0);
glamor_copy_area(&temp_pixmap->drawable, drawable, gc, 0, 0, w, h, x, y);
glamor_destroy_pixmap(temp_pixmap);
} else
glamor_upload_sub_pixmap_to_texture(pixmap, x + drawable->x + x_off, y + drawable->y + y_off,
w, h, PixmapBytePad(w, depth), bits, 0);
ret = TRUE;
goto done;
fail:
glamor_set_planemask(pixmap, ~0);
if (!fallback
&& glamor_ddx_fallback_check_pixmap(&pixmap->drawable))
goto done;
glamor_fallback("to %p (%c)\n",
drawable, glamor_get_drawable_location(drawable));
sub_pixmap = glamor_get_sub_pixmap(pixmap, x + x_off + drawable->x,
y + y_off + drawable->y, w, h,
GLAMOR_ACCESS_RW);
if (sub_pixmap) {
if (clip != NULL)
pixman_region_translate (clip, -x - drawable->x, -y - drawable->y);
fbPutImage(&sub_pixmap->drawable, gc, depth, 0, 0, w, h,
left_pad, image_format, bits);
glamor_put_sub_pixmap(sub_pixmap, pixmap,
x + x_off + drawable->x,
y + y_off + drawable->y,
w, h, GLAMOR_ACCESS_RW);
if (clip != NULL)
pixman_region_translate (clip, x + drawable->x, y + drawable->y);
} else
fbPutImage(drawable, gc, depth, x, y, w, h,
left_pad, image_format, bits);
ret = TRUE;
done:
return ret;
}
void
glamor_put_image(DrawablePtr drawable, GCPtr gc, int depth, int x, int y,
int w, int h, int left_pad, int image_format, char *bits)
{
_glamor_put_image(drawable, gc, depth, x, y, w, h,
left_pad, image_format, bits, TRUE);
}
Bool
glamor_put_image_nf(DrawablePtr drawable, GCPtr gc, int depth, int x, int y,
int w, int h, int left_pad, int image_format, char *bits)
{
return _glamor_put_image(drawable, gc, depth, x, y, w, h,
left_pad, image_format, bits, FALSE);
}
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