519 lines
15 KiB
C
519 lines
15 KiB
C
/*
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* Copyright © 2001 Keith Packard
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* Copyright © 2008 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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/** @file glamor_core.c
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*
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* This file covers core X rendering in glamor.
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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 <stdlib.h>
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#include "glamor_priv.h"
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const Bool
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glamor_get_drawable_location(const DrawablePtr drawable)
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{
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PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
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glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
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glamor_screen_private *glamor_priv =
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glamor_get_screen_private(drawable->pScreen);
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if (pixmap_priv == NULL || pixmap_priv->gl_fbo == 0)
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return 'm';
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if (pixmap_priv->fb == glamor_priv->screen_fbo)
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return 's';
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else
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return 'f';
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}
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void
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glamor_get_transform_uniform_locations(GLint prog,
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glamor_transform_uniforms *uniform_locations)
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{
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uniform_locations->x_bias = glGetUniformLocation(prog, "x_bias");
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uniform_locations->x_scale = glGetUniformLocation(prog, "x_scale");
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uniform_locations->y_bias = glGetUniformLocation(prog, "y_bias");
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uniform_locations->y_scale = glGetUniformLocation(prog, "y_scale");
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}
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/* We don't use a full matrix for our transformations because it's
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* wasteful when all we want is to rescale to NDC and possibly do a flip
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* if it's the front buffer.
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*/
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void
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glamor_set_transform_for_pixmap(PixmapPtr pixmap,
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glamor_transform_uniforms *uniform_locations)
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{
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glUniform1f(uniform_locations->x_bias, -pixmap->drawable.width / 2.0f);
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glUniform1f(uniform_locations->x_scale, 2.0f / pixmap->drawable.width);
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glUniform1f(uniform_locations->y_bias, -pixmap->drawable.height / 2.0f);
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glUniform1f(uniform_locations->y_scale, -2.0f / pixmap->drawable.height);
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}
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GLint
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glamor_compile_glsl_prog(GLenum type, const char *source)
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{
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GLint ok;
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GLint prog;
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prog = glCreateShader(type);
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glShaderSource(prog, 1, (const GLchar **)&source, NULL);
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glCompileShader(prog);
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glGetShaderiv(prog, GL_COMPILE_STATUS, &ok);
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if (!ok) {
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GLchar *info;
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GLint size;
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glGetShaderiv(prog, GL_INFO_LOG_LENGTH, &size);
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info = malloc(size);
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glGetShaderInfoLog(prog, size, NULL, info);
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ErrorF("Failed to compile %s: %s\n",
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type == GL_FRAGMENT_SHADER ? "FS" : "VS",
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info);
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ErrorF("Program source:\n%s", source);
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FatalError("GLSL compile failure\n");
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}
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return prog;
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}
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void
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glamor_link_glsl_prog(GLint prog)
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{
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GLint ok;
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glLinkProgram(prog);
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glGetProgramiv(prog, GL_LINK_STATUS, &ok);
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if (!ok) {
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GLchar *info;
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GLint size;
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glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &size);
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info = malloc(size);
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glGetProgramInfoLog(prog, size, NULL, info);
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ErrorF("Failed to link: %s\n",
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info);
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FatalError("GLSL link failure\n");
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}
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}
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Bool
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glamor_prepare_access(DrawablePtr drawable, glamor_access_t access)
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{
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PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
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return glamor_download_pixmap_to_cpu(pixmap, access);
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}
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void
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glamor_init_finish_access_shaders(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 *vs_source =
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"attribute vec4 v_position;\n"
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"attribute vec4 v_texcoord0;\n"
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"varying vec2 source_texture;\n"
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"void main()\n"
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"{\n"
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" gl_Position = v_position;\n"
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" source_texture = v_texcoord0.xy;\n"
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"}\n";
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const char *fs_source =
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GLAMOR_DEFAULT_PRECISION
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"varying vec2 source_texture;\n"
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"uniform sampler2D sampler;\n"
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"uniform int no_revert;\n"
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"uniform int swap_rb;\n"
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"void main()\n"
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"{\n"
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" if (no_revert == 1) \n"
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" { \n"
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" if (swap_rb == 1) \n"
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" gl_FragColor = texture2D(sampler, source_texture).bgra;\n"
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" else \n"
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" gl_FragColor = texture2D(sampler, source_texture).rgba;\n"
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" } \n"
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" else \n"
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" { \n"
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" if (swap_rb == 1) \n"
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" gl_FragColor = texture2D(sampler, source_texture).argb;\n"
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" else \n"
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" gl_FragColor = texture2D(sampler, source_texture).abgr;\n"
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" } \n"
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"}\n";
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const char *set_alpha_source =
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GLAMOR_DEFAULT_PRECISION
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"varying vec2 source_texture;\n"
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"uniform sampler2D sampler;\n"
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"uniform int no_revert;\n"
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"uniform int swap_rb;\n"
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"void main()\n"
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"{\n"
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" if (no_revert == 1) \n"
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" { \n"
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" if (swap_rb == 1) \n"
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" gl_FragColor = vec4(texture2D(sampler, source_texture).bgr, 1);\n"
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" else \n"
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" gl_FragColor = vec4(texture2D(sampler, source_texture).rgb, 1);\n"
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" } \n"
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" else \n"
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" { \n"
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" if (swap_rb == 1) \n"
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" gl_FragColor = vec4(1, texture2D(sampler, source_texture).rgb);\n"
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" else \n"
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" gl_FragColor = vec4(1, texture2D(sampler, source_texture).bgr);\n"
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" } \n"
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"}\n";
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GLint fs_prog, vs_prog, avs_prog, set_alpha_prog;
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GLint sampler_uniform_location;
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glamor_priv->finish_access_prog[0] = glCreateProgram();
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glamor_priv->finish_access_prog[1] = glCreateProgram();
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vs_prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER, vs_source);
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fs_prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER, fs_source);
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glAttachShader(glamor_priv->finish_access_prog[0], vs_prog);
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glAttachShader(glamor_priv->finish_access_prog[0], fs_prog);
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avs_prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER, vs_source);
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set_alpha_prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER, set_alpha_source);
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glAttachShader(glamor_priv->finish_access_prog[1], avs_prog);
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glAttachShader(glamor_priv->finish_access_prog[1], set_alpha_prog);
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glBindAttribLocation(glamor_priv->finish_access_prog[0], GLAMOR_VERTEX_POS, "v_position");
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glBindAttribLocation(glamor_priv->finish_access_prog[0], GLAMOR_VERTEX_SOURCE, "v_texcoord0");
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glamor_link_glsl_prog(glamor_priv->finish_access_prog[0]);
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glBindAttribLocation(glamor_priv->finish_access_prog[1], GLAMOR_VERTEX_POS, "v_position");
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glBindAttribLocation(glamor_priv->finish_access_prog[1], GLAMOR_VERTEX_SOURCE, "v_texcoord0");
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glamor_link_glsl_prog(glamor_priv->finish_access_prog[1]);
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glamor_priv->finish_access_no_revert[0] =
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glGetUniformLocation(glamor_priv->finish_access_prog[0], "no_revert");
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glamor_priv->finish_access_swap_rb[0] =
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glGetUniformLocation(glamor_priv->finish_access_prog[0], "swap_rb");
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sampler_uniform_location =
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glGetUniformLocation(glamor_priv->finish_access_prog[0], "sampler");
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glUseProgram(glamor_priv->finish_access_prog[0]);
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glUniform1i(sampler_uniform_location, 0);
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glUniform1i(glamor_priv->finish_access_no_revert[0],1);
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glUniform1i(glamor_priv->finish_access_swap_rb[0],0);
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glUseProgram(0);
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glamor_priv->finish_access_no_revert[1] =
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glGetUniformLocation(glamor_priv->finish_access_prog[1], "no_revert");
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glamor_priv->finish_access_swap_rb[1] =
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glGetUniformLocation(glamor_priv->finish_access_prog[1], "swap_rb");
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sampler_uniform_location =
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glGetUniformLocation(glamor_priv->finish_access_prog[1], "sampler");
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glUseProgram(glamor_priv->finish_access_prog[1]);
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glUniform1i(glamor_priv->finish_access_no_revert[1],1);
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glUniform1i(sampler_uniform_location, 0);
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glUniform1i(glamor_priv->finish_access_swap_rb[1],0);
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glUseProgram(0);
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}
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void
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glamor_finish_access(DrawablePtr drawable)
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{
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PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
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glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
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glamor_screen_private *glamor_priv = glamor_get_screen_private(drawable->pScreen);
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if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
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return;
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if ( pixmap_priv->access_mode != GLAMOR_ACCESS_RO) {
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glamor_restore_pixmap_to_texture(pixmap);
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}
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if (pixmap_priv->pbo != 0 && pixmap_priv->pbo_valid) {
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assert(glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP);
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glBindBuffer (GL_PIXEL_PACK_BUFFER, 0);
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glBindBuffer (GL_PIXEL_UNPACK_BUFFER, 0);
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pixmap_priv->pbo_valid = FALSE;
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glDeleteBuffers(1, &pixmap_priv->pbo);
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pixmap_priv->pbo = 0;
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} else {
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free(pixmap->devPrivate.ptr);
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}
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pixmap->devPrivate.ptr = NULL;
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}
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/**
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* Calls uxa_prepare_access with UXA_PREPARE_SRC for the tile, if that is the
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* current fill style.
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*
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* Solid doesn't use an extra pixmap source, so we don't worry about them.
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* Stippled/OpaqueStippled are 1bpp and can be in fb, so we should worry
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* about them.
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*/
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Bool
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glamor_prepare_access_gc(GCPtr gc)
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{
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if (gc->stipple) {
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if (!glamor_prepare_access(&gc->stipple->drawable, GLAMOR_ACCESS_RO))
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return FALSE;
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}
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if (gc->fillStyle == FillTiled) {
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if (!glamor_prepare_access (&gc->tile.pixmap->drawable,
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GLAMOR_ACCESS_RO)) {
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if (gc->stipple)
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glamor_finish_access(&gc->stipple->drawable);
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return FALSE;
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}
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}
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return TRUE;
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}
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/**
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* Finishes access to the tile in the GC, if used.
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*/
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void
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glamor_finish_access_gc(GCPtr gc)
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{
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if (gc->fillStyle == FillTiled)
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glamor_finish_access(&gc->tile.pixmap->drawable);
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if (gc->stipple)
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glamor_finish_access(&gc->stipple->drawable);
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}
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Bool
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glamor_stipple(PixmapPtr pixmap, PixmapPtr stipple,
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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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unsigned long fg_pixel, unsigned long bg_pixel,
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int stipple_x, int stipple_y)
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{
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glamor_fallback("stubbed out stipple depth %d\n", pixmap->drawable.depth);
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return FALSE;
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}
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GCOps glamor_gc_ops = {
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.FillSpans = glamor_fill_spans,
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.SetSpans = glamor_set_spans,
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.PutImage = glamor_put_image,
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.CopyArea = glamor_copy_area,
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.CopyPlane = miCopyPlane,
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.PolyPoint = miPolyPoint,
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.Polylines = glamor_poly_lines,
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.PolySegment = miPolySegment,
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.PolyRectangle = miPolyRectangle,
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.PolyArc = miPolyArc,
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.FillPolygon = miFillPolygon,
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.PolyFillRect = glamor_poly_fill_rect,
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.PolyFillArc = miPolyFillArc,
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.PolyText8 = miPolyText8,
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.PolyText16 = miPolyText16,
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.ImageText8 = miImageText8,
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.ImageText16 = miImageText16,
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.ImageGlyphBlt = miImageGlyphBlt,
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.PolyGlyphBlt = miPolyGlyphBlt,
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.PushPixels = miPushPixels,
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};
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/**
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* uxa_validate_gc() sets the ops to glamor's implementations, which may be
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* accelerated or may sync the card and fall back to fb.
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*/
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static void
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glamor_validate_gc(GCPtr gc, unsigned long changes, DrawablePtr drawable)
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{
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/* fbValidateGC will do direct access to pixmaps if the tiling has changed.
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* Preempt fbValidateGC by doing its work and masking the change out, so
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* that we can do the Prepare/finish_access.
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*/
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#ifdef FB_24_32BIT
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if ((changes & GCTile) && fbGetRotatedPixmap(gc)) {
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gc->pScreen->DestroyPixmap(fbGetRotatedPixmap(gc));
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fbGetRotatedPixmap(gc) = 0;
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}
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if (gc->fillStyle == FillTiled) {
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PixmapPtr old_tile, new_tile;
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old_tile = gc->tile.pixmap;
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if (old_tile->drawable.bitsPerPixel != drawable->bitsPerPixel) {
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new_tile = fbGetRotatedPixmap(gc);
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if (!new_tile ||
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new_tile ->drawable.bitsPerPixel != drawable->bitsPerPixel)
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{
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if (new_tile)
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gc->pScreen->DestroyPixmap(new_tile);
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/* fb24_32ReformatTile will do direct access of a newly-
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* allocated pixmap.
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*/
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glamor_fallback("GC %p tile FB_24_32 transformat %p.\n", gc, old_tile);
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if (glamor_prepare_access(&old_tile->drawable,
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GLAMOR_ACCESS_RO)) {
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new_tile = fb24_32ReformatTile(old_tile,
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drawable->bitsPerPixel);
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glamor_finish_access(&old_tile->drawable);
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}
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}
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if (new_tile) {
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fbGetRotatedPixmap(gc) = old_tile;
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gc->tile.pixmap = new_tile;
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changes |= GCTile;
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}
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}
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}
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#endif
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if (changes & GCTile) {
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if (!gc->tileIsPixel) {
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glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(gc->tile.pixmap);
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if ((!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
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&& FbEvenTile(gc->tile.pixmap->drawable.width *
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drawable->bitsPerPixel))
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{
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glamor_fallback("GC %p tile changed %p.\n", gc, gc->tile.pixmap);
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if (glamor_prepare_access(&gc->tile.pixmap->drawable,
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GLAMOR_ACCESS_RW)) {
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fbPadPixmap(gc->tile.pixmap);
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glamor_finish_access(&gc->tile.pixmap->drawable);
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}
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}
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}
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/* Mask out the GCTile change notification, now that we've done FB's
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* job for it.
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*/
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changes &= ~GCTile;
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}
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if (changes & GCStipple && gc->stipple) {
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/* We can't inline stipple handling like we do for GCTile because
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* it sets fbgc privates.
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*/
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if (glamor_prepare_access(&gc->stipple->drawable, GLAMOR_ACCESS_RW)) {
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fbValidateGC(gc, changes, drawable);
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glamor_finish_access(&gc->stipple->drawable);
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}
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} else {
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fbValidateGC(gc, changes, drawable);
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}
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gc->ops = &glamor_gc_ops;
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}
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static GCFuncs glamor_gc_funcs = {
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glamor_validate_gc,
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miChangeGC,
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miCopyGC,
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miDestroyGC,
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miChangeClip,
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miDestroyClip,
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miCopyClip
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};
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/**
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* exaCreateGC makes a new GC and hooks up its funcs handler, so that
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* exaValidateGC() will get called.
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*/
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int
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glamor_create_gc(GCPtr gc)
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{
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if (!fbCreateGC(gc))
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return FALSE;
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gc->funcs = &glamor_gc_funcs;
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return TRUE;
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}
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RegionPtr
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glamor_bitmap_to_region(PixmapPtr pixmap)
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{
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RegionPtr ret;
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glamor_fallback("pixmap %p \n", pixmap);
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if (!glamor_prepare_access(&pixmap->drawable, GLAMOR_ACCESS_RO))
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return NULL;
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ret = fbPixmapToRegion(pixmap);
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glamor_finish_access(&pixmap->drawable);
|
|
return ret;
|
|
}
|
|
|
|
/* Borrow from cairo. */
|
|
Bool
|
|
glamor_gl_has_extension(char *extension)
|
|
{
|
|
const char *gl_extensions;
|
|
char *pext;
|
|
int ext_len;
|
|
ext_len = strlen(extension);
|
|
|
|
gl_extensions = (const char*)glGetString(GL_EXTENSIONS);
|
|
pext = (char*)gl_extensions;
|
|
|
|
if (pext == NULL || extension == NULL)
|
|
return FALSE;
|
|
|
|
while((pext = strstr(pext, extension)) != NULL) {
|
|
if (pext[ext_len] == ' ' || pext[ext_len] == '\0')
|
|
return TRUE;
|
|
pext += ext_len;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
int
|
|
glamor_gl_get_version (void)
|
|
{
|
|
int major, minor;
|
|
const char *version = (const char *) glGetString (GL_VERSION);
|
|
const char *dot = version == NULL ? NULL : strchr (version, '.');
|
|
const char *major_start = dot;
|
|
|
|
/* Sanity check */
|
|
if (dot == NULL || dot == version || *(dot + 1) == '\0') {
|
|
major = 0;
|
|
minor = 0;
|
|
} else {
|
|
/* Find the start of the major version in the string */
|
|
while (major_start > version && *major_start != ' ')
|
|
--major_start;
|
|
major = strtol (major_start, NULL, 10);
|
|
minor = strtol (dot + 1, NULL, 10);
|
|
}
|
|
|
|
return GLAMOR_GL_VERSION_ENCODE (major, minor);
|
|
}
|
|
|