From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43649) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YnMkd-0007ZS-N8 for qemu-devel@nongnu.org; Wed, 29 Apr 2015 03:49:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YnMkX-0008Bp-1u for qemu-devel@nongnu.org; Wed, 29 Apr 2015 03:49:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42994) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YnMkW-0008BN-Qm for qemu-devel@nongnu.org; Wed, 29 Apr 2015 03:49:40 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t3T7neua007929 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Wed, 29 Apr 2015 03:49:40 -0400 From: Gerd Hoffmann Date: Wed, 29 Apr 2015 09:49:26 +0200 Message-Id: <1430293770-1965-3-git-send-email-kraxel@redhat.com> In-Reply-To: <1430293770-1965-1-git-send-email-kraxel@redhat.com> References: <1430293770-1965-1-git-send-email-kraxel@redhat.com> Subject: [Qemu-devel] [PATCH 2/6] opengl: add shader helper functions. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Gerd Hoffmann Helper functions to compile, link and run opengl shader programs. Signed-off-by: Gerd Hoffmann --- include/ui/shader.h | 9 +++++ ui/Makefile.objs | 5 +++ ui/shader.c | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 109 insertions(+) create mode 100644 include/ui/shader.h create mode 100644 ui/shader.c diff --git a/include/ui/shader.h b/include/ui/shader.h new file mode 100644 index 0000000..e1b0caf --- /dev/null +++ b/include/ui/shader.h @@ -0,0 +1,9 @@ +#ifdef CONFIG_OPENGL +# include +# include +#endif + +GLuint qemu_gl_create_compile_shader(GLenum type, const GLchar *src); +GLuint qemu_gl_create_link_program(GLuint vert, GLuint frag); +GLuint qemu_gl_create_compile_link_program(const GLchar *vert_src, + const GLchar *frag_src); diff --git a/ui/Makefile.objs b/ui/Makefile.objs index 13b5cfb..a11e821 100644 --- a/ui/Makefile.objs +++ b/ui/Makefile.objs @@ -24,4 +24,9 @@ sdl.mo-objs := sdl2.o sdl2-input.o sdl2-2d.o endif sdl.mo-cflags := $(SDL_CFLAGS) +ifeq ($(CONFIG_OPENGL),y) +common-obj-y += shader.o +libs_softmmu += $(OPENGL_LIBS) +endif + gtk.o-cflags := $(GTK_CFLAGS) $(VTE_CFLAGS) diff --git a/ui/shader.c b/ui/shader.c new file mode 100644 index 0000000..c3272d6 --- /dev/null +++ b/ui/shader.c @@ -0,0 +1,95 @@ +/* + * QEMU opengl shader helper functions + * + * Copyright (c) 2014 Red Hat + * + * Authors: + * Gerd Hoffmann + * + * 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 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. + */ +#include "qemu-common.h" +#include "ui/shader.h" + +/* ---------------------------------------------------------------------- */ + +GLuint qemu_gl_create_compile_shader(GLenum type, const GLchar *src) +{ + GLuint shader; + GLint status, length; + char *errmsg; + + shader = glCreateShader(type); + glShaderSource(shader, 1, &src, 0); + glCompileShader(shader); + + glGetShaderiv(shader, GL_COMPILE_STATUS, &status); + if (!status) { + glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &length); + errmsg = malloc(length); + glGetShaderInfoLog(shader, length, &length, errmsg); + fprintf(stderr, "%s: compile %s error\n%s\n", __func__, + (type == GL_VERTEX_SHADER) ? "vertex" : "fragment", + errmsg); + free(errmsg); + return 0; + } + return shader; +} + +GLuint qemu_gl_create_link_program(GLuint vert, GLuint frag) +{ + GLuint program; + GLint status, length; + char *errmsg; + + program = glCreateProgram(); + glAttachShader(program, vert); + glAttachShader(program, frag); + glLinkProgram(program); + + glGetProgramiv(program, GL_LINK_STATUS, &status); + if (!status) { + glGetProgramiv(program, GL_INFO_LOG_LENGTH, &length); + errmsg = malloc(length); + glGetProgramInfoLog(program, length, &length, errmsg); + fprintf(stderr, "%s: link program: %s\n", __func__, errmsg); + free(errmsg); + return 0; + } + return program; +} + +GLuint qemu_gl_create_compile_link_program(const GLchar *vert_src, + const GLchar *frag_src) +{ + GLuint vert_shader, frag_shader, program; + + vert_shader = qemu_gl_create_compile_shader(GL_VERTEX_SHADER, vert_src); + frag_shader = qemu_gl_create_compile_shader(GL_FRAGMENT_SHADER, frag_src); + if (!vert_shader || !frag_shader) { + return 0; + } + + program = qemu_gl_create_link_program(vert_shader, frag_shader); + glDeleteShader(vert_shader); + glDeleteShader(frag_shader); + + return program; +} -- 1.8.3.1