145 lines
4.6 KiB
C
145 lines
4.6 KiB
C
/*
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* Copyright © 2009 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "glamor_priv.h"
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/** @file glamor_tile.c
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*
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* Implements the basic fill-with-a-tile support used by multiple GC ops.
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*/
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void
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glamor_init_tile_shader(ScreenPtr screen)
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{
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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const char *tile_vs =
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"uniform float x_bias;\n"
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"uniform float x_scale;\n"
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"uniform float y_bias;\n"
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"uniform float y_scale;\n"
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"void main()\n"
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"{\n"
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" gl_Position = vec4((gl_Vertex.x + x_bias) * x_scale,\n"
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" (gl_Vertex.y + y_bias) * y_scale,\n"
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" 0,\n"
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" 1);\n"
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" gl_TexCoord[0] = vec4(gl_MultiTexCoord0.xy, 0, 1);\n"
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"}\n";
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const char *tile_fs =
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"uniform sampler2D sampler;\n"
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"void main()\n"
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"{\n"
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" gl_FragColor = texture2D(sampler, gl_TexCoord[0].xy);\n"
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"}\n";
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GLint fs_prog, vs_prog;
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GLint sampler_uniform_location;
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if (!GLEW_ARB_fragment_shader)
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return;
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glamor_priv->tile_prog = glCreateProgramObjectARB();
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vs_prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER_ARB, tile_vs);
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fs_prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER_ARB, tile_fs);
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glAttachObjectARB(glamor_priv->tile_prog, vs_prog);
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glAttachObjectARB(glamor_priv->tile_prog, fs_prog);
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glamor_link_glsl_prog(glamor_priv->tile_prog);
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sampler_uniform_location =
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glGetUniformLocationARB(glamor_priv->tile_prog, "sampler");
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glUseProgramObjectARB(glamor_priv->tile_prog);
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glUniform1iARB(sampler_uniform_location, 0);
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glamor_get_transform_uniform_locations(glamor_priv->tile_prog,
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&glamor_priv->tile_transform);
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}
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void
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glamor_tile(PixmapPtr pixmap, PixmapPtr tile,
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int x, int y, int width, int height,
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unsigned char alu, unsigned long planemask,
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int tile_x, int tile_y)
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{
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ScreenPtr screen = pixmap->drawable.pScreen;
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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int x1 = x;
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int x2 = x + width;
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int y1 = y;
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int y2 = y + height;
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int tile_x1 = tile_x - tile->screen_x;
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int tile_x2 = tile_x - tile->screen_x + width;
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int tile_y1 = tile_y - tile->screen_y;
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int tile_y2 = tile_y - tile->screen_y + height;
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glamor_pixmap_private *tile_priv = glamor_get_pixmap_private(tile);
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if (glamor_priv->tile_prog == 0) {
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ErrorF("Tiling unsupported\n");
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goto fail;
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}
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if (!glamor_set_destination_pixmap(pixmap))
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goto fail;
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if (tile_priv->fb == 0) {
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ErrorF("Non-FBO tile pixmap\n");
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goto fail;
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}
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if (!glamor_set_planemask(pixmap, planemask))
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goto fail;
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glamor_set_alu(alu);
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glUseProgramObjectARB(glamor_priv->tile_prog);
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glamor_set_transform_for_pixmap(pixmap, &glamor_priv->tile_transform);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, tile_priv->tex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glEnable(GL_TEXTURE_2D);
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glBegin(GL_TRIANGLE_FAN);
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glMultiTexCoord2f(0, tile_x1, tile_y1);
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glVertex2f(x1, y1);
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glMultiTexCoord2f(0, tile_x1, tile_y2);
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glVertex2f(x1, y2);
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glMultiTexCoord2f(0, tile_x2, tile_y2);
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glVertex2f(x2, y2);
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glMultiTexCoord2f(0, tile_x2, tile_y1);
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glVertex2f(x2, y1);
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glEnd();
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glUseProgramObjectARB(0);
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glDisable(GL_TEXTURE_2D);
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glamor_set_alu(GXcopy);
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glamor_set_planemask(pixmap, ~0);
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return;
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fail:
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glamor_solid_fail_region(pixmap, x, y, width, height);
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return;
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}
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