542 lines
19 KiB
C
542 lines
19 KiB
C
/*
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* Compatibility functions for older GL implementations
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*
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* Copyright 2008 Stefan Dösinger for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdio.h>
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#ifdef HAVE_FLOAT_H
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# include <float.h>
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#endif
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#include "wined3d_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(gl_compat);
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WINE_DECLARE_DEBUG_CHANNEL(d3d_perf);
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/* Start GL_ARB_multitexture emulation */
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static void WINE_GLAPI wine_glMultiTexCoord1fARB(GLenum target, GLfloat s)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord1f(s);
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}
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static void WINE_GLAPI wine_glMultiTexCoord1fvARB(GLenum target, const GLfloat *v)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord1fv(v);
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}
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static void WINE_GLAPI wine_glMultiTexCoord2fARB(GLenum target, GLfloat s, GLfloat t)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord2f(s, t);
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}
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static void WINE_GLAPI wine_glMultiTexCoord2fvARB(GLenum target, const GLfloat *v)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord2fv(v);
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}
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static void WINE_GLAPI wine_glMultiTexCoord3fARB(GLenum target, GLfloat s, GLfloat t, GLfloat r)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord3f(s, t, r);
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}
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static void WINE_GLAPI wine_glMultiTexCoord3fvARB(GLenum target, const GLfloat *v)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord3fv(v);
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}
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static void WINE_GLAPI wine_glMultiTexCoord4fARB(GLenum target, GLfloat s, GLfloat t, GLfloat r, GLfloat q)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord4f(s, t, r, q);
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}
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static void WINE_GLAPI wine_glMultiTexCoord4fvARB(GLenum target, const GLfloat *v)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord4fv(v);
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}
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static void WINE_GLAPI wine_glMultiTexCoord2svARB(GLenum target, const GLshort *v)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord2sv(v);
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}
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static void WINE_GLAPI wine_glMultiTexCoord4svARB(GLenum target, const GLshort *v)
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{
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if (target != GL_TEXTURE0)
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{
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported.\n");
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return;
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}
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wined3d_context_gl_get_current()->gl_info->gl_ops.gl.p_glTexCoord4sv(v);
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}
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static void WINE_GLAPI wine_glActiveTexture(GLenum texture)
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{
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if(texture != GL_TEXTURE0) {
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported\n");
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return;
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}
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}
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static void WINE_GLAPI wine_glClientActiveTextureARB(GLenum texture) {
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if(texture != GL_TEXTURE0) {
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ERR("Texture unit > 0 used, but GL_ARB_multitexture is not supported\n");
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return;
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}
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}
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static void (WINE_GLAPI *old_multitex_glGetIntegerv) (GLenum pname, GLint* params) = NULL;
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static void WINE_GLAPI wine_glGetIntegerv(GLenum pname, GLint* params) {
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switch(pname) {
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case GL_ACTIVE_TEXTURE: *params = 0; break;
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case GL_MAX_TEXTURE_UNITS_ARB: *params = 1; break;
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default: old_multitex_glGetIntegerv(pname, params);
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}
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}
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static void (WINE_GLAPI *old_multitex_glGetFloatv) (GLenum pname, GLfloat* params) = NULL;
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static void WINE_GLAPI wine_glGetFloatv(GLenum pname, GLfloat* params) {
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if (pname == GL_ACTIVE_TEXTURE) *params = 0.0f;
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else old_multitex_glGetFloatv(pname, params);
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}
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static void (WINE_GLAPI *old_multitex_glGetDoublev) (GLenum pname, GLdouble* params) = NULL;
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static void WINE_GLAPI wine_glGetDoublev(GLenum pname, GLdouble* params) {
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if(pname == GL_ACTIVE_TEXTURE) *params = 0.0;
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else old_multitex_glGetDoublev(pname, params);
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}
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/* Start GL_EXT_fogcoord emulation */
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static void (WINE_GLAPI *old_fogcoord_glEnable)(GLenum cap);
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static void WINE_GLAPI wine_glEnable(GLenum cap)
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{
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if (cap == GL_FOG)
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{
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struct wined3d_context_gl *ctx = wined3d_context_gl_get_current();
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ctx->fog_enabled = 1;
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if (ctx->gl_fog_source != GL_FRAGMENT_DEPTH_EXT)
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return;
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}
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old_fogcoord_glEnable(cap);
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}
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static void (WINE_GLAPI *old_fogcoord_glDisable)(GLenum cap);
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static void WINE_GLAPI wine_glDisable(GLenum cap)
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{
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if (cap == GL_FOG)
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{
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struct wined3d_context_gl *ctx = wined3d_context_gl_get_current();
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ctx->fog_enabled = 0;
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if (ctx->gl_fog_source != GL_FRAGMENT_DEPTH_EXT)
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return;
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}
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old_fogcoord_glDisable(cap);
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}
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static void (WINE_GLAPI *old_fogcoord_glFogi)(GLenum pname, GLint param);
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static void WINE_GLAPI wine_glFogi(GLenum pname, GLint param)
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{
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struct wined3d_context_gl *ctx = wined3d_context_gl_get_current();
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if (pname == GL_FOG_COORDINATE_SOURCE_EXT)
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{
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ctx->gl_fog_source = param;
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if (param == GL_FRAGMENT_DEPTH_EXT)
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{
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if (ctx->fog_enabled)
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old_fogcoord_glEnable(GL_FOG);
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}
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else
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{
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WARN_(d3d_perf)("Fog coordinates activated, but not supported. Using slow emulation.\n");
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old_fogcoord_glDisable(GL_FOG);
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}
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}
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else
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{
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if (pname == GL_FOG_START)
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ctx->fog_start = (float)param;
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else if (pname == GL_FOG_END)
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ctx->fog_end = (float)param;
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old_fogcoord_glFogi(pname, param);
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}
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}
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static void (WINE_GLAPI *old_fogcoord_glFogiv)(GLenum pname, const GLint *param);
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static void WINE_GLAPI wine_glFogiv(GLenum pname, const GLint *param)
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{
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struct wined3d_context_gl *ctx = wined3d_context_gl_get_current();
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if (pname == GL_FOG_COORDINATE_SOURCE_EXT)
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{
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ctx->gl_fog_source = *param;
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if (*param == GL_FRAGMENT_DEPTH_EXT)
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{
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if (ctx->fog_enabled)
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old_fogcoord_glEnable(GL_FOG);
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}
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else
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{
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WARN_(d3d_perf)("Fog coordinates activated, but not supported. Using slow emulation.\n");
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old_fogcoord_glDisable(GL_FOG);
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}
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}
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else
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{
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if (pname == GL_FOG_START)
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ctx->fog_start = (float)*param;
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else if (pname == GL_FOG_END)
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ctx->fog_end = (float)*param;
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old_fogcoord_glFogiv(pname, param);
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}
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}
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static void (WINE_GLAPI *old_fogcoord_glFogf)(GLenum pname, GLfloat param);
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static void WINE_GLAPI wine_glFogf(GLenum pname, GLfloat param)
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{
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struct wined3d_context_gl *ctx = wined3d_context_gl_get_current();
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if (pname == GL_FOG_COORDINATE_SOURCE_EXT)
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{
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ctx->gl_fog_source = (GLint)param;
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if (param == GL_FRAGMENT_DEPTH_EXT)
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{
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if (ctx->fog_enabled)
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old_fogcoord_glEnable(GL_FOG);
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}
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else
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{
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WARN_(d3d_perf)("Fog coordinates activated, but not supported. Using slow emulation.\n");
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old_fogcoord_glDisable(GL_FOG);
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}
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}
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else
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{
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if (pname == GL_FOG_START)
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ctx->fog_start = param;
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else if (pname == GL_FOG_END)
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ctx->fog_end = param;
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old_fogcoord_glFogf(pname, param);
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}
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}
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static void (WINE_GLAPI *old_fogcoord_glFogfv)(GLenum pname, const GLfloat *param);
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static void WINE_GLAPI wine_glFogfv(GLenum pname, const GLfloat *param)
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{
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struct wined3d_context_gl *ctx = wined3d_context_gl_get_current();
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if (pname == GL_FOG_COORDINATE_SOURCE_EXT)
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{
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ctx->gl_fog_source = (GLint)*param;
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if (*param == GL_FRAGMENT_DEPTH_EXT)
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{
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if (ctx->fog_enabled)
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old_fogcoord_glEnable(GL_FOG);
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}
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else
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{
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WARN_(d3d_perf)("Fog coordinates activated, but not supported. Using slow emulation.\n");
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old_fogcoord_glDisable(GL_FOG);
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}
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}
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else
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{
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if (pname == GL_FOG_COLOR)
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{
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ctx->fog_colour[0] = param[0];
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ctx->fog_colour[1] = param[1];
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ctx->fog_colour[2] = param[2];
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ctx->fog_colour[3] = param[3];
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}
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else if (pname == GL_FOG_START)
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{
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ctx->fog_start = *param;
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}
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else if (pname == GL_FOG_END)
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{
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ctx->fog_end = *param;
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}
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old_fogcoord_glFogfv(pname, param);
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}
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}
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static void (WINE_GLAPI *old_fogcoord_glVertex4f)(GLfloat x, GLfloat y, GLfloat z, GLfloat w);
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static void (WINE_GLAPI *old_fogcoord_glColor4f)(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
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static void WINE_GLAPI wine_glVertex4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
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{
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const struct wined3d_context_gl *ctx_gl = wined3d_context_gl_get_current();
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/* This can be called from draw_test_quad() and at that point there is no
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* wined3d_context current. */
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if (!ctx_gl)
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{
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old_fogcoord_glVertex4f(x, y, z, w);
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return;
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}
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if (ctx_gl->gl_fog_source == GL_FOG_COORDINATE_EXT && ctx_gl->fog_enabled)
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{
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GLfloat c[4] = {ctx_gl->colour[0], ctx_gl->colour[1], ctx_gl->colour[2], ctx_gl->colour[3]};
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GLfloat i;
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i = (ctx_gl->fog_end - ctx_gl->fog_coord_value) / (ctx_gl->fog_end - ctx_gl->fog_start);
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c[0] = i * c[0] + (1.0f - i) * ctx_gl->fog_colour[0];
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c[1] = i * c[1] + (1.0f - i) * ctx_gl->fog_colour[1];
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c[2] = i * c[2] + (1.0f - i) * ctx_gl->fog_colour[2];
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old_fogcoord_glColor4f(c[0], c[1], c[2], c[3]);
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old_fogcoord_glVertex4f(x, y, z, w);
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}
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else
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{
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old_fogcoord_glVertex4f(x, y, z, w);
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}
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}
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static void WINE_GLAPI wine_glVertex4fv(const GLfloat *pos) {
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wine_glVertex4f(pos[0], pos[1], pos[2], pos[3]);
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}
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static void WINE_GLAPI wine_glVertex3f(GLfloat x, GLfloat y, GLfloat z) {
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wine_glVertex4f(x, y, z, 1.0f);
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}
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static void WINE_GLAPI wine_glVertex3fv(const GLfloat *pos) {
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wine_glVertex4f(pos[0], pos[1], pos[2], 1.0f);
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}
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static void WINE_GLAPI wine_glColor4f(GLfloat r, GLfloat g, GLfloat b, GLfloat a)
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{
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struct wined3d_context_gl *ctx_gl = wined3d_context_gl_get_current();
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/* This can be called from draw_test_quad() and at that point there is no
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* wined3d_context current. */
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if (!ctx_gl)
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{
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old_fogcoord_glColor4f(r, g, b, a);
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return;
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}
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ctx_gl->colour[0] = r;
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ctx_gl->colour[1] = g;
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ctx_gl->colour[2] = b;
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ctx_gl->colour[3] = a;
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old_fogcoord_glColor4f(r, g, b, a);
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}
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static void WINE_GLAPI wine_glColor4fv(const GLfloat *c) {
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wine_glColor4f(c[0], c[1], c[2], c[3]);
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}
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static void WINE_GLAPI wine_glColor3f(GLfloat r, GLfloat g, GLfloat b) {
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wine_glColor4f(r, g, b, 1.0f);
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}
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static void WINE_GLAPI wine_glColor3fv(const GLfloat *c) {
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wine_glColor4f(c[0], c[1], c[2], 1.0f);
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}
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static void WINE_GLAPI wine_glColor4ub(GLubyte r, GLubyte g, GLubyte b, GLubyte a) {
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wine_glColor4f(r / 255.0f, g / 255.0f, b / 255.0f, a / 255.0f);
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}
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/* In D3D the fog coord is a UBYTE, so there's no problem with using the
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* single precision function. */
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static void WINE_GLAPI wine_glFogCoordfEXT(GLfloat f)
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{
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struct wined3d_context_gl *ctx = wined3d_context_gl_get_current();
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ctx->fog_coord_value = f;
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}
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static void WINE_GLAPI wine_glFogCoorddEXT(GLdouble f) {
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wine_glFogCoordfEXT((GLfloat) f);
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}
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static void WINE_GLAPI wine_glFogCoordfvEXT(const GLfloat *f) {
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wine_glFogCoordfEXT(*f);
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}
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static void WINE_GLAPI wine_glFogCoorddvEXT(const GLdouble *f) {
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wine_glFogCoordfEXT((GLfloat) *f);
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}
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/* End GL_EXT_fog_coord emulation */
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void install_gl_compat_wrapper(struct wined3d_gl_info *gl_info, enum wined3d_gl_extension ext)
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{
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switch (ext)
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{
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case ARB_MULTITEXTURE:
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if (gl_info->supported[ARB_MULTITEXTURE])
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return;
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if (gl_info->gl_ops.ext.p_glActiveTexture == wine_glActiveTexture)
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{
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FIXME("ARB_multitexture emulation hooks already applied.\n");
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return;
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}
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TRACE("Applying GL_ARB_multitexture emulation hooks.\n");
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gl_info->gl_ops.ext.p_glActiveTexture = wine_glActiveTexture;
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gl_info->gl_ops.ext.p_glClientActiveTextureARB = wine_glClientActiveTextureARB;
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gl_info->gl_ops.ext.p_glMultiTexCoord1fARB = wine_glMultiTexCoord1fARB;
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gl_info->gl_ops.ext.p_glMultiTexCoord1fvARB = wine_glMultiTexCoord1fvARB;
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gl_info->gl_ops.ext.p_glMultiTexCoord2fARB = wine_glMultiTexCoord2fARB;
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gl_info->gl_ops.ext.p_glMultiTexCoord2fvARB = wine_glMultiTexCoord2fvARB;
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gl_info->gl_ops.ext.p_glMultiTexCoord3fARB = wine_glMultiTexCoord3fARB;
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gl_info->gl_ops.ext.p_glMultiTexCoord3fvARB = wine_glMultiTexCoord3fvARB;
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gl_info->gl_ops.ext.p_glMultiTexCoord4fARB = wine_glMultiTexCoord4fARB;
|
|
gl_info->gl_ops.ext.p_glMultiTexCoord4fvARB = wine_glMultiTexCoord4fvARB;
|
|
gl_info->gl_ops.ext.p_glMultiTexCoord2svARB = wine_glMultiTexCoord2svARB;
|
|
gl_info->gl_ops.ext.p_glMultiTexCoord4svARB = wine_glMultiTexCoord4svARB;
|
|
old_multitex_glGetIntegerv = gl_info->gl_ops.gl.p_glGetIntegerv;
|
|
gl_info->gl_ops.gl.p_glGetIntegerv = wine_glGetIntegerv;
|
|
old_multitex_glGetFloatv = gl_info->gl_ops.gl.p_glGetFloatv;
|
|
gl_info->gl_ops.gl.p_glGetFloatv = wine_glGetFloatv;
|
|
old_multitex_glGetDoublev = gl_info->gl_ops.gl.p_glGetDoublev;
|
|
gl_info->gl_ops.gl.p_glGetDoublev = wine_glGetDoublev;
|
|
gl_info->supported[ARB_MULTITEXTURE] = TRUE;
|
|
return;
|
|
|
|
case EXT_FOG_COORD:
|
|
/* This emulation isn't perfect. There are a number of potential problems, but they should
|
|
* not matter in practise:
|
|
*
|
|
* Fog vs fragment shader: If we are using GL_ARB_fragment_program with the fog option, the
|
|
* glDisable(GL_FOG) here won't matter. However, if we have GL_ARB_fragment_program, it is pretty
|
|
* unlikely that we don't have GL_EXT_fog_coord. Besides, we probably have GL_ARB_vertex_program
|
|
* too, which would allow fog coord emulation in a fixed function vertex pipeline replacement.
|
|
*
|
|
* Fog vs texture: We apply the fog in the vertex color. An app could set up texturing settings which
|
|
* ignore the vertex color, thus effectively disabling our fog. However, in D3D this type of fog is
|
|
* a per-vertex fog too, so the apps shouldn't do that.
|
|
*
|
|
* Fog vs lighting: The app could in theory use D3DFOG_NONE table and D3DFOG_NONE vertex fog with
|
|
* untransformed vertices. That enables lighting and fog coords at the same time, and the lighting
|
|
* calculations could affect the already blended in fog color. There's nothing we can do against that,
|
|
* but most apps using fog color do their own lighting too and often even use RHW vertices. So live
|
|
* with it.
|
|
*/
|
|
if (gl_info->supported[EXT_FOG_COORD])
|
|
return;
|
|
if (gl_info->gl_ops.gl.p_glFogi == wine_glFogi)
|
|
{
|
|
FIXME("EXT_fog_coord emulation hooks already applied.\n");
|
|
return;
|
|
}
|
|
TRACE("Applying GL_ARB_fog_coord emulation hooks\n");
|
|
|
|
/* This probably means that the implementation doesn't advertise the extension, but implicitly supports
|
|
* it via the GL core version, or someone messed around in the extension table in directx.c. Add version-
|
|
* dependent loading for this extension if we ever hit this situation
|
|
*/
|
|
if (gl_info->supported[ARB_FRAGMENT_PROGRAM])
|
|
{
|
|
FIXME("GL implementation supports GL_ARB_fragment_program but not GL_EXT_fog_coord\n");
|
|
FIXME("The fog coord emulation will most likely fail\n");
|
|
}
|
|
else if (gl_info->supported[ARB_FRAGMENT_SHADER])
|
|
{
|
|
FIXME("GL implementation supports GL_ARB_fragment_shader but not GL_EXT_fog_coord\n");
|
|
FIXME("The fog coord emulation will most likely fail\n");
|
|
}
|
|
|
|
old_fogcoord_glFogi = gl_info->gl_ops.gl.p_glFogi;
|
|
gl_info->gl_ops.gl.p_glFogi = wine_glFogi;
|
|
old_fogcoord_glFogiv = gl_info->gl_ops.gl.p_glFogiv;
|
|
gl_info->gl_ops.gl.p_glFogiv = wine_glFogiv;
|
|
old_fogcoord_glFogf = gl_info->gl_ops.gl.p_glFogf;
|
|
gl_info->gl_ops.gl.p_glFogf = wine_glFogf;
|
|
old_fogcoord_glFogfv = gl_info->gl_ops.gl.p_glFogfv;
|
|
gl_info->gl_ops.gl.p_glFogfv = wine_glFogfv;
|
|
old_fogcoord_glEnable = gl_info->p_glEnableWINE;
|
|
gl_info->p_glEnableWINE = wine_glEnable;
|
|
old_fogcoord_glDisable = gl_info->p_glDisableWINE;
|
|
gl_info->p_glDisableWINE = wine_glDisable;
|
|
|
|
old_fogcoord_glVertex4f = gl_info->gl_ops.gl.p_glVertex4f;
|
|
gl_info->gl_ops.gl.p_glVertex4f = wine_glVertex4f;
|
|
gl_info->gl_ops.gl.p_glVertex4fv = wine_glVertex4fv;
|
|
gl_info->gl_ops.gl.p_glVertex3f = wine_glVertex3f;
|
|
gl_info->gl_ops.gl.p_glVertex3fv = wine_glVertex3fv;
|
|
|
|
old_fogcoord_glColor4f = gl_info->gl_ops.gl.p_glColor4f;
|
|
gl_info->gl_ops.gl.p_glColor4f = wine_glColor4f;
|
|
gl_info->gl_ops.gl.p_glColor4fv = wine_glColor4fv;
|
|
gl_info->gl_ops.gl.p_glColor3f = wine_glColor3f;
|
|
gl_info->gl_ops.gl.p_glColor3fv = wine_glColor3fv;
|
|
gl_info->gl_ops.gl.p_glColor4ub = wine_glColor4ub;
|
|
|
|
gl_info->gl_ops.ext.p_glFogCoordfEXT = wine_glFogCoordfEXT;
|
|
gl_info->gl_ops.ext.p_glFogCoordfvEXT = wine_glFogCoordfvEXT;
|
|
gl_info->gl_ops.ext.p_glFogCoorddEXT = wine_glFogCoorddEXT;
|
|
gl_info->gl_ops.ext.p_glFogCoorddvEXT = wine_glFogCoorddvEXT;
|
|
gl_info->supported[EXT_FOG_COORD] = TRUE;
|
|
return;
|
|
|
|
default:
|
|
FIXME("Extension %u emulation not supported.\n", ext);
|
|
}
|
|
}
|