xserver-multidpi/glamor/glamor_tile.c
Chris Wilson 556adfa6b9 Fixup glx support
Renaming glamor_priv->dispatch and wrapping the access to
the dispatch table with a function that also ensured the
context was bound.

 dispatch = glamor_get_dispatch(glamor_priv);
 ...
 glamor_put_dispatch(glamor_priv);

So that we catch all places where we attempt to call into GL withouta
context. As an optimisation we can then do glamor_get_context();
glamor_put_context() around the rendering entry points to reduce the
frequency of having to restore the old context. (Along with allowing
the context to be recursively acquired and making the old context part of
the glamor_egl state.)

Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>
Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
2013-12-18 11:23:48 -08:00

227 lines
7.1 KiB
C

/*
* 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>
*
*/
#include "glamor_priv.h"
/** @file glamor_tile.c
*
* Implements the basic fill-with-a-tile support used by multiple GC ops.
*/
void
glamor_init_tile_shader(ScreenPtr screen)
{
glamor_screen_private *glamor_priv;
glamor_gl_dispatch *dispatch;
const char *tile_vs =
"attribute vec4 v_position;\n"
"attribute vec4 v_texcoord0;\n"
"varying vec2 tile_texture;\n"
"void main()\n"
"{\n"
" gl_Position = v_position;\n"
" tile_texture = v_texcoord0.xy;\n" "}\n";
const char *tile_fs =
GLAMOR_DEFAULT_PRECISION
"varying vec2 tile_texture;\n"
"uniform sampler2D sampler;\n"
"void main()\n"
"{\n" " gl_FragColor = texture2D(sampler, tile_texture);\n"
"}\n";
GLint fs_prog, vs_prog;
GLint sampler_uniform_location;
glamor_priv = glamor_get_screen_private(screen);
dispatch = glamor_get_dispatch(glamor_priv);
glamor_priv->tile_prog = dispatch->glCreateProgram();
vs_prog = glamor_compile_glsl_prog(dispatch, GL_VERTEX_SHADER, tile_vs);
fs_prog = glamor_compile_glsl_prog(dispatch, GL_FRAGMENT_SHADER,
tile_fs);
dispatch->glAttachShader(glamor_priv->tile_prog, vs_prog);
dispatch->glAttachShader(glamor_priv->tile_prog, fs_prog);
dispatch->glBindAttribLocation(glamor_priv->tile_prog,
GLAMOR_VERTEX_POS, "v_position");
dispatch->glBindAttribLocation(glamor_priv->tile_prog,
GLAMOR_VERTEX_SOURCE,
"v_texcoord0");
glamor_link_glsl_prog(dispatch, glamor_priv->tile_prog);
sampler_uniform_location =
dispatch->glGetUniformLocation(glamor_priv->tile_prog,
"sampler");
dispatch->glUseProgram(glamor_priv->tile_prog);
dispatch->glUniform1i(sampler_uniform_location, 0);
dispatch->glUseProgram(0);
glamor_put_dispatch(glamor_priv);
}
void
glamor_fini_tile_shader(ScreenPtr screen)
{
glamor_screen_private *glamor_priv;
glamor_gl_dispatch *dispatch;
glamor_priv = glamor_get_screen_private(screen);
dispatch = glamor_get_dispatch(glamor_priv);
dispatch->glDeleteProgram(glamor_priv->tile_prog);
glamor_put_dispatch(glamor_priv);
}
Bool
glamor_tile(PixmapPtr pixmap, PixmapPtr tile,
int x, int y, int width, int height,
unsigned char alu, unsigned long planemask,
int tile_x, int tile_y)
{
ScreenPtr screen = pixmap->drawable.pScreen;
glamor_screen_private *glamor_priv =
glamor_get_screen_private(screen);
glamor_gl_dispatch *dispatch;
int x1 = x;
int x2 = x + width;
int y1 = y;
int y2 = y + height;
int tile_x1 = tile_x;
int tile_x2 = tile_x + width;
int tile_y1 = tile_y;
int tile_y2 = tile_y + height;
float vertices[8];
float source_texcoords[8];
GLfloat dst_xscale, dst_yscale, src_xscale, src_yscale;
glamor_pixmap_private *src_pixmap_priv;
glamor_pixmap_private *dst_pixmap_priv;
src_pixmap_priv = glamor_get_pixmap_private(tile);
dst_pixmap_priv = glamor_get_pixmap_private(pixmap);
if (src_pixmap_priv == NULL || dst_pixmap_priv == NULL)
goto fail;
if (glamor_priv->tile_prog == 0) {
glamor_fallback("Tiling unsupported\n");
goto fail;
}
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(dst_pixmap_priv)) {
glamor_fallback("dest has no fbo.\n");
goto fail;
}
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(src_pixmap_priv)) {
/* XXX dynamic uploading candidate. */
glamor_fallback("Non-texture tile pixmap\n");
goto fail;
}
if (!glamor_set_planemask(pixmap, planemask)) {
glamor_fallback("unsupported planemask %lx\n", planemask);
goto fail;
}
if (src_pixmap_priv->fbo->width != tile->drawable.width
|| src_pixmap_priv->fbo->height != tile->drawable.height) {
if (!glamor_fixup_pixmap_priv(screen, src_pixmap_priv)) {
glamor_fallback("Failed to create a fixup pixmap for partial tiling. \n");
goto fail;
}
}
if (alu != GXcopy) {
glamor_set_destination_pixmap_priv_nc(src_pixmap_priv);
glamor_validate_pixmap(tile);
}
glamor_set_destination_pixmap_priv_nc(dst_pixmap_priv);
glamor_validate_pixmap(pixmap);
pixmap_priv_get_scale(dst_pixmap_priv, &dst_xscale, &dst_yscale);
dispatch = glamor_get_dispatch(glamor_priv);
glamor_set_alu(dispatch, alu);
if (GLAMOR_PIXMAP_PRIV_NO_PENDING(src_pixmap_priv)) {
pixmap_priv_get_scale(src_pixmap_priv, &src_xscale,
&src_yscale);
dispatch->glUseProgram(glamor_priv->tile_prog);
dispatch->glActiveTexture(GL_TEXTURE0);
dispatch->glBindTexture(GL_TEXTURE_2D,
src_pixmap_priv->fbo->tex);
dispatch->glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
dispatch->glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
GL_REPEAT);
dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
GL_REPEAT);
#ifndef GLAMOR_GLES2
dispatch->glEnable(GL_TEXTURE_2D);
#endif
glamor_set_normalize_tcoords(src_xscale, src_yscale,
tile_x1, tile_y1,
tile_x2, tile_y2,
glamor_priv->yInverted,
source_texcoords);
dispatch->glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2,
GL_FLOAT, GL_FALSE,
2 * sizeof(float),
source_texcoords);
dispatch->glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
} else {
GLAMOR_CHECK_PENDING_FILL(dispatch, glamor_priv,
src_pixmap_priv);
}
glamor_set_normalize_vcoords(dst_xscale, dst_yscale,
x1, y1, x2, y2,
glamor_priv->yInverted, vertices);
dispatch->glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_FLOAT,
GL_FALSE, 2 * sizeof(float),
vertices);
dispatch->glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
dispatch->glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
if (GLAMOR_PIXMAP_PRIV_NO_PENDING(src_pixmap_priv)) {
dispatch->glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
#ifndef GLAMOR_GLES2
dispatch->glDisable(GL_TEXTURE_2D);
#endif
}
dispatch->glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
dispatch->glUseProgram(0);
glamor_set_alu(dispatch, GXcopy);
glamor_set_planemask(pixmap, ~0);
glamor_put_dispatch(glamor_priv);
return TRUE;
fail:
return FALSE;
}