------------------------------------------------------------------------
r4242 | acceptthis | 2013-03-08 02:45:46 +0000 (Fri, 08 Mar 2013) | 1 line Change conditionals in shaders to properly support nested conditions and to be slightly more compatible with other engines (ie: qfusion/warsow). This refixes transparent water. ------------------------------------------------------------------------ git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4238 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike
parent
3ef2925cd8
commit
c6b6c12a6e
4 changed files with 129 additions and 101 deletions
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@ -165,9 +165,8 @@ void R2D_Init(void)
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draw_backtile = R_RegisterShader("gfx/backtile.lmp",
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"{\n"
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"if $nofixed\n"
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"[\n"
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"program default2d\n"
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"]\n"
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"endif\n"
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"nomipmaps\n"
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"{\n"
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"map $diffuse\n"
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@ -247,26 +246,24 @@ void R2D_Init(void)
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shader_menutint = R_RegisterShader("menutint",
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"{\n"
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"if $glsl && gl_menutint_shader != 0\n"
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"[\n"
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"program menutint\n"
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"{\n"
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"map $currentrender\n"
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"}\n"
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"][\n"
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"else\n"
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"{\n"
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"map $whiteimage\n"
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"blendfunc gl_dst_color gl_zero\n"
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"rgbgen const $r_menutint\n"
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"}\n"
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"]\n"
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"endif\n"
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"}\n"
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);
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shader_crosshair = R_RegisterShader("crosshairshader",
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"{\n"
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"if $nofixed\n"
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"[\n"
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"program default2d\n"
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"]\n"
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"endif\n"
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"nomipmaps\n"
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"{\n"
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"map $diffuse\n"
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@ -457,9 +454,8 @@ void R2D_TransPicTranslate (int x, int y, int width, int height, qbyte *pic, qby
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translate_texture = R_AllocNewTexture("***translatedpic***", 64, 64, 0);
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translate_shader = R_RegisterShader("translatedpic", "{\n"
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"if $nofixed\n"
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"[\n"
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"program default2d\n"
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"]\n"
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"endif\n"
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"nomipmaps\n"
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"{\n"
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"map $diffuse\n"
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@ -267,9 +267,8 @@ void Font_Init(void)
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fontplanes.shader = R_RegisterShader("ftefont",
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"{\n"
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"if $nofixed\n"
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"[\n"
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"program default2d\n"
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"]\n"
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"endif\n"
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"nomipmaps\n"
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"{\n"
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"map $nearest:$diffuse\n"
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@ -3221,9 +3221,8 @@ void Terr_FinishTerrain(heightmap_t *hm, char *shadername, char *skyname)
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"}\n"
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"program terrain\n"
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"if r_terraindebug\n"
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"[\n"
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"program terraindebug\n"
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"]\n"
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"endif\n"
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"}\n"
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);
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@ -3238,6 +3238,11 @@ void Shader_Readpass (shader_t *shader, char **ptr)
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shaderpass_t *pass;
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qboolean ignore;
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static shader_t dummy;
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int conddepth = 0;
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int cond[8] = {0};
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#define COND_IGNORE 1
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#define COND_IGNOREPARENT 2
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#define COND_ALLOWELSE 4
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if ( shader->numpasses >= SHADER_PASS_MAX )
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{
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@ -3273,45 +3278,62 @@ void Shader_Readpass (shader_t *shader, char **ptr)
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{
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continue;
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}
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else if ( token[0] == '}' )
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{
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break;
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}
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else if (!Q_stricmp(token, "if"))
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{
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int nest = 0;
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qboolean conditionistrue = Shader_EvaluateCondition(shader, ptr);
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while (*ptr)
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if (conddepth+1 == sizeof(cond)/sizeof(cond[0]))
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{
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token = COM_ParseExt (ptr, true, true);
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if ( !token[0] )
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continue;
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else if (token[0] == ']')
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Con_Printf("if statements nest too deeply in shader %s\n", shader->name);
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break;
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}
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conddepth++;
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cond[conddepth] = (Shader_EvaluateCondition(shader, ptr)?0:COND_IGNORE);
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cond[conddepth] |= COND_ALLOWELSE;
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if (cond[conddepth-1] & (COND_IGNORE|COND_IGNOREPARENT))
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cond[conddepth] |= COND_IGNOREPARENT;
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}
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else if (!Q_stricmp(token, "endif"))
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{
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if (--nest <= 0)
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if (!conddepth)
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{
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nest++;
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if (!strcmp(token, "]["))
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conditionistrue = !conditionistrue;
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Con_Printf("endif without if in shader %s\n", shader->name);
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break;
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}
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conddepth--;
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}
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else if (!Q_stricmp(token, "else"))
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{
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if (cond[conddepth] & COND_ALLOWELSE)
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{
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cond[conddepth] ^= COND_IGNORE;
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cond[conddepth] &= ~COND_ALLOWELSE;
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}
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else
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Con_Printf("unexpected else statement in shader %s\n", shader->name);
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}
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else if (cond[conddepth] & (COND_IGNORE|COND_IGNOREPARENT))
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{
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//eat it
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while (ptr)
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{
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token = COM_ParseExt(ptr, false, true);
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if ( !token[0] )
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break;
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}
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}
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else if (token[0] == '[')
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nest++;
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else if (conditionistrue)
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else
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{
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Shader_Parsetok (shader, pass, shaderpasskeys, token, ptr);
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}
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}
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}
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if ( token[0] == '}' )
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break;
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else if ( Shader_Parsetok (shader, pass, shaderpasskeys, token, ptr) )
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{
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break;
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}
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}
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if (conddepth)
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{
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Con_Printf("if statements without endif in shader %s\n", shader->name);
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}
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// check some things
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if ( ignore )
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{
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@ -4133,7 +4155,6 @@ void Shader_DefaultBSPLM(char *shortname, shader_t *s, const void *args)
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builtin = (
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"{\n"
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/* "if $deluxmap\n"
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"[\n"
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"{\n"
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"map $normalmap\n"
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"tcgen base\n"
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@ -4143,34 +4164,30 @@ void Shader_DefaultBSPLM(char *shortname, shader_t *s, const void *args)
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"map $deluxmap\n"
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"tcgen lightmap\n"
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"}\n"
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"]\n"
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"endif\n"
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*/// "if !r_fullbright\n"
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// "[\n"
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"{\n"
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"map $lightmap\n"
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// "if $deluxmap\n"
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// "[\n"
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// "blendfunc gl_dst_color gl_zero\n"
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// "]\n"
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// "endif\n"
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"}\n"
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// "]\n"
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// "endif\n"
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"{\n"
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"map $diffuse\n"
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"tcgen base\n"
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// "if $deluxmap || !r_fullbright\n"
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// "[\n"
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// "blendfunc gl_dst_color gl_zero\n"
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"blendfunc filter\n"
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// "]\n"
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// "endif\n"
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"}\n"
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"if gl_fb_bmodels\n"
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"[\n"
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"{\n"
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"map $fullbright\n"
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"blendfunc add\n"
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"depthfunc equal\n"
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"}\n"
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"]\n"
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"endif\n"
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"}\n"
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);
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@ -4251,19 +4268,16 @@ char *Shader_DefaultBSPWater(char *shortname)
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"map $diffuse\n"
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"tcmod turb 0.02 0.1 0.5 0.1\n"
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"if !$#ALPHA\n"
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"[\n"
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"if r_wateralpha < 1\n"
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"[\n"
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"alphagen const $r_wateralpha\n"
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"blendfunc gl_src_alpha gl_one_minus_src_alpha\n"
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"]\n"
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"][\n"
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"endif\n"
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"else\n"
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"if $#ALPHA < 1\n"
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"[\n"
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"alphagen const $#ALPHA\n"
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"blendfunc gl_src_alpha gl_one_minus_src_alpha\n"
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"]\n"
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"]\n"
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"endif\n"
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"endif\n"
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"}\n"
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"surfaceparm nodlight\n"
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"}\n"
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@ -4479,7 +4493,6 @@ void Shader_DefaultBSPQ1(char *shortname, shader_t *s, const void *args)
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builtin = (
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"{\n"
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/* "if $deluxmap\n"
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"[\n"
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"{\n"
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"map $normalmap\n"
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"tcgen base\n"
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@ -4488,20 +4501,19 @@ void Shader_DefaultBSPQ1(char *shortname, shader_t *s, const void *args)
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"map $deluxmap\n"
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"tcgen lightmap\n"
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"}\n"
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"]\n"*/
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"endif\n"*/
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"{\n"
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"map $diffuse\n"
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"tcgen base\n"
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"alphamask\n"
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"}\n"
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"if $lightmap\n"
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"[\n"
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"{\n"
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"map $lightmap\n"
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"blendfunc gl_dst_color gl_zero\n"
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"depthfunc equal\n"
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"}\n"
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"]\n"
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"endif\n"
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"{\n"
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"map $fullbright\n"
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"blendfunc add\n"
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@ -4601,11 +4613,10 @@ void Shader_DefaultSkin(char *shortname, shader_t *s, const void *args)
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Shader_DefaultScript(shortname, s,
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"{\n"
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"if $lpp\n"
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"[\n"
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"program lpp_skin\n"
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"][\n"
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"else\n"
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"program defaultskin\n"
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"]\n"
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"endif\n"
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"{\n"
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"map $diffuse\n"
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"rgbgen lightingDiffuse\n"
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@ -4625,14 +4636,13 @@ void Shader_DefaultSkin(char *shortname, shader_t *s, const void *args)
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"blendfunc add\n"
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"}\n"
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"if $haveprogram\n"
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"[\n"
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"{\n"
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"map $normalmap\n"
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"}\n"
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"{\n"
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"map $specular\n"
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"}\n"
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"]\n"
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"endif\n"
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"}\n"
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);
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}
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@ -4656,9 +4666,8 @@ void Shader_Default2D(char *shortname, shader_t *s, const void *genargs)
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Shader_DefaultScript(shortname, s,
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"{\n"
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"if $nofixed\n"
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"[\n"
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"program default2d\n"
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"]\n"
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"endif\n"
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"nomipmaps\n"
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"{\n"
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"clampmap $diffuse\n"
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@ -4689,6 +4698,11 @@ void Shader_Default2D(char *shortname, shader_t *s, const void *genargs)
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static void Shader_ReadShader(shader_t *s, char *shadersource, int parsemode)
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{
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char *token;
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int conddepth = 0;
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int cond[8] = {0};
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#define COND_IGNORE 1
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#define COND_IGNOREPARENT 2
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#define COND_ALLOWELSE 4
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shaderparsemode = parsemode;
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@ -4702,44 +4716,64 @@ static void Shader_ReadShader(shader_t *s, char *shadersource, int parsemode)
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if ( !token[0] )
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continue;
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else if ( token[0] == '}' )
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break;
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else if (!Q_stricmp(token, "if"))
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{
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int nest = 0;
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qboolean conditionistrue = Shader_EvaluateCondition(s, &shadersource);
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while (shadersource)
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if (conddepth+1 == sizeof(cond)/sizeof(cond[0]))
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{
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token = COM_ParseExt (&shadersource, true, true);
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Con_Printf("if statements nest too deeply in shader %s\n", s->name);
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break;
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}
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conddepth++;
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cond[conddepth] = (!Shader_EvaluateCondition(s, &shadersource)?COND_IGNORE:0);
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cond[conddepth] |= COND_ALLOWELSE;
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if (cond[conddepth-1] & (COND_IGNORE|COND_IGNOREPARENT))
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cond[conddepth] |= COND_IGNOREPARENT;
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}
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else if (!Q_stricmp(token, "endif"))
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{
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if (!conddepth)
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{
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Con_Printf("endif without if in shader %s\n", s->name);
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break;
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}
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conddepth--;
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}
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else if (!Q_stricmp(token, "else"))
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{
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if (cond[conddepth] & COND_ALLOWELSE)
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{
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cond[conddepth] ^= COND_IGNORE;
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cond[conddepth] &= ~COND_ALLOWELSE;
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}
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else
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Con_Printf("unexpected else statement in shader %s\n", s->name);
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}
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else if (cond[conddepth] & (COND_IGNORE|COND_IGNOREPARENT))
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{
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//eat it.
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while (*shadersource)
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{
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token = COM_ParseExt(&shadersource, false, true);
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if ( !token[0] )
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continue;
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else if (token[0] == ']')
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{
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if (--nest <= 0)
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{
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nest++;
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if (!strcmp(token, "]["))
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conditionistrue = !conditionistrue;
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else
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break;
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}
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}
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else if (token[0] == '[')
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nest++;
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else if (conditionistrue)
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{
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if (token[0] == '{')
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Shader_Readpass (s, &shadersource);
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}
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else
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Shader_Parsetok (s, NULL, shaderkeys, token, &shadersource);
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}
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}
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}
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else if ( token[0] == '{' )
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Shader_Readpass ( s, &shadersource );
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else if ( Shader_Parsetok (s, NULL, shaderkeys, token, &shadersource ) )
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{
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if (token[0] == '}')
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break;
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else if (token[0] == '{')
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Shader_Readpass(s, &shadersource);
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else if (Shader_Parsetok(s, NULL, shaderkeys, token, &shadersource))
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break;
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}
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}
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if (conddepth)
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{
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Con_Printf("if statements without endif in shader %s\n", s->name);
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}
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Shader_Finish ( s );
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