From 33d75c0cc7e700fcc74401326b0fb6b114dea68c Mon Sep 17 00:00:00 2001
From: plagman <plagman@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Sat, 28 Mar 2009 16:14:10 +0000
Subject: [PATCH] Specular maps (pal 101).

git-svn-id: https://svn.eduke32.com/eduke32@1281 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/eduke32/build/include/polymer.h |  5 +++
 polymer/eduke32/build/src/polymer.c     | 51 ++++++++++++++++++++++++-
 2 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/polymer/eduke32/build/include/polymer.h b/polymer/eduke32/build/include/polymer.h
index 9013d126a..dbdb8db35 100644
--- a/polymer/eduke32/build/include/polymer.h
+++ b/polymer/eduke32/build/include/polymer.h
@@ -52,6 +52,7 @@ typedef enum {
                     PR_BIT_DIFFUSE_MAP,
                     PR_BIT_DIFFUSE_DETAIL_MAP,
                     PR_BIT_DIFFUSE_MODULATION,
+                    PR_BIT_SPECULAR_MAP,
                     PR_BIT_SPECULAR_MATERIAL,
                     PR_BIT_MIRROR_MAP,
                     PR_BIT_GLOW_MAP,
@@ -77,6 +78,8 @@ typedef struct      s_prmaterial {
     GLfloat         detailscale[2];
     // PR_BIT_DIFFUSE_MODULATION
     GLfloat         diffusemodulation[4];
+    // PR_BIT_SPECULAR_MAP
+    GLuint          specmap;
     // PR_BIT_SPECULAR_MATERIAL
     GLfloat         specmaterial[2];
     // PR_BIT_MIRROR_MAP
@@ -104,6 +107,8 @@ typedef struct      s_prrograminfo {
     // PR_BIT_DIFFUSE_DETAIL_MAP
     GLint           uniform_detailMap;
     GLint           uniform_detailScale;
+    // PR_BIT_SPECULAR_MAP
+    GLint           uniform_specMap;
     // PR_BIT_SPECULAR_MATERIAL
     GLint           uniform_specMaterial;
     // PR_BIT_MIRROR_MAP
diff --git a/polymer/eduke32/build/src/polymer.c b/polymer/eduke32/build/src/polymer.c
index 11b17a04b..524bf0079 100644
--- a/polymer/eduke32/build/src/polymer.c
+++ b/polymer/eduke32/build/src/polymer.c
@@ -257,6 +257,19 @@ _prprogrambit   prprogrambits[PR_BIT_COUNT] = {
         "    result *= vec4(gl_Color);\n"
         "\n",
     },
+    {
+        1 << PR_BIT_SPECULAR_MAP,
+        // vert_def
+        "",
+        // vert_prog
+        "",
+        // frag_def
+        "uniform sampler2D specMap;\n"
+        "\n",
+        // frag_prog
+        "  specTexel = texture2D(specMap, gl_TexCoord[0].st);\n"
+        "\n",
+    },
     {
         1 << PR_BIT_SPECULAR_MATERIAL,
         // vert_def
@@ -405,8 +418,8 @@ _prprogrambit   prprogrambits[PR_BIT_COUNT] = {
         "                 gl_LightSource[0].diffuse.rgb * lightAttenuation * spotAttenuation;\n"
         "  result += vec4(lightDiffuse * NdotL, 0.0);\n"
         "\n"
-        "  lightSpecular = pow( max(dot(R, E), 0.0), specularMaterial.x) * specularMaterial.y;\n"
-        "  result += vec4(lightDiffuse * lightSpecular, 0.0);\n"
+        "  lightSpecular = pow( max(dot(R, E), 0.0), specularMaterial.x * specTexel.a) * specularMaterial.y;\n"
+        "  result += vec4(lightDiffuse * specTexel.rgb * lightSpecular, 0.0);\n"
         "\n",
     },
     {
@@ -431,6 +444,7 @@ _prprogrambit   prprogrambits[PR_BIT_COUNT] = {
         "  int texCoord = 1;\n"
         "  vec4 result = vec4(1.0, 1.0, 1.0, 1.0);\n"
         "  vec4 diffuseTexel = vec4(1.0, 1.0, 1.0, 1.0);\n"
+        "  vec4 specTexel = vec4(1.0, 1.0, 1.0, 1.0);\n"
         "  vec4 normalTexel;\n"
         "  int isLightingPass = 0;\n"
         "  int isNormalMapped = 0;\n"
@@ -3059,6 +3073,8 @@ static void         polymer_getscratchmaterial(_prmaterial* material)
             material->diffusemodulation[1] =
             material->diffusemodulation[2] =
             material->diffusemodulation[3] = 1.0f;
+    // PR_BIT_SPECULAR_MAP
+    material->specmap = 0;
     // PR_BIT_SPECULAR_MATERIAL
     material->specmaterial[0] = material->specmaterial[1] = 1.0f;
     // PR_BIT_MIRROR_MAP
@@ -3138,6 +3154,16 @@ static void         polymer_getbuildmaterial(_prmaterial* material, int16_t tile
         material->diffusemodulation[2] *= (float)hictinting[pal].b / 255.0;
     }
 
+    // PR_BIT_SPECULAR_MAP
+    if (hicfindsubst(tilenum, 101, 0))
+    {
+        glowpth = NULL;
+        glowpth = gltexcache(tilenum, 101, 0);
+
+        if (glowpth && glowpth->hicr && (glowpth->hicr->palnum == 101))
+            material->specmap = glowpth->glpic;
+    }
+
     // PR_BIT_SPECULAR_MATERIAL
     if (pth->hicr)
     {
@@ -3191,6 +3217,10 @@ static int32_t      polymer_bindmaterial(_prmaterial material, char* lights, int
     // PR_BIT_DIFFUSE_MODULATION
     programbits |= prprogrambits[PR_BIT_DIFFUSE_MODULATION].bit;
 
+    // PR_BIT_SPECULAR_MAP
+    if (material.specmap)
+        programbits |= prprogrambits[PR_BIT_SPECULAR_MAP].bit;
+
     // PR_BIT_SPECULAR_MATERIAL
     if ((material.specmaterial[0] != 1.0) || (material.specmaterial[1] != 1.0))
         programbits |= prprogrambits[PR_BIT_SPECULAR_MATERIAL].bit;
@@ -3299,6 +3329,17 @@ static int32_t      polymer_bindmaterial(_prmaterial material, char* lights, int
                    material.diffusemodulation[3]);
     }
 
+    // PR_BIT_SPECULAR_MAP
+    if (programbits & prprogrambits[PR_BIT_SPECULAR_MAP].bit)
+    {
+        bglActiveTextureARB(texunit + GL_TEXTURE0_ARB);
+        bglBindTexture(GL_TEXTURE_2D, material.specmap);
+
+        bglUniform1iARB(prprograms[programbits].uniform_specMap, texunit);
+
+        texunit++;
+    }
+
     // PR_BIT_SPECULAR_MATERIAL
     if (programbits & prprogrambits[PR_BIT_SPECULAR_MATERIAL].bit)
     {
@@ -3537,6 +3578,12 @@ static void         polymer_compileprogram(int32_t programbits)
         prprograms[programbits].uniform_detailScale = bglGetUniformLocationARB(program, "detailScale");
     }
 
+    // PR_BIT_SPECULAR_MAP
+    if (programbits & prprogrambits[PR_BIT_SPECULAR_MAP].bit)
+    {
+        prprograms[programbits].uniform_specMap = bglGetUniformLocationARB(program, "specMap");
+    }
+
     // PR_BIT_SPECULAR_MATERIAL
     if (programbits & prprogrambits[PR_BIT_SPECULAR_MATERIAL].bit)
     {