optimizations to surface rendering setup

[xonotic/darkplaces.git] / r_lightning.c

diff --git a/r_lightning.c b/r_lightning.c
index 4309170f4836eec628ed81bd76d4f025e619d5e1..6b38c35b5bf1874b5c83a44c2f7cac23bdd9f9b4 100644 (file)
--- a/r_lightning.c
+++ b/r_lightning.c
@@ -2,13 +2,13 @@
 #include "quakedef.h"
 #include "image.h"
 
-cvar_t r_lightningbeam_thickness = {CVAR_SAVE, "r_lightningbeam_thickness", "4"};
-cvar_t r_lightningbeam_scroll = {CVAR_SAVE, "r_lightningbeam_scroll", "5"};
-cvar_t r_lightningbeam_repeatdistance = {CVAR_SAVE, "r_lightningbeam_repeatdistance", "128"};
-cvar_t r_lightningbeam_color_red = {CVAR_SAVE, "r_lightningbeam_color_red", "1"};
-cvar_t r_lightningbeam_color_green = {CVAR_SAVE, "r_lightningbeam_color_green", "1"};
-cvar_t r_lightningbeam_color_blue = {CVAR_SAVE, "r_lightningbeam_color_blue", "1"};
-cvar_t r_lightningbeam_qmbtexture = {CVAR_SAVE, "r_lightningbeam_qmbtexture", "0"};
+cvar_t r_lightningbeam_thickness = {CVAR_SAVE, "r_lightningbeam_thickness", "4", "thickness of the lightning beam effect"};
+cvar_t r_lightningbeam_scroll = {CVAR_SAVE, "r_lightningbeam_scroll", "5", "speed of texture scrolling on the lightning beam effect"};
+cvar_t r_lightningbeam_repeatdistance = {CVAR_SAVE, "r_lightningbeam_repeatdistance", "128", "how far to stretch the texture along the lightning beam effect"};
+cvar_t r_lightningbeam_color_red = {CVAR_SAVE, "r_lightningbeam_color_red", "1", "color of the lightning beam effect"};
+cvar_t r_lightningbeam_color_green = {CVAR_SAVE, "r_lightningbeam_color_green", "1", "color of the lightning beam effect"};
+cvar_t r_lightningbeam_color_blue = {CVAR_SAVE, "r_lightningbeam_color_blue", "1", "color of the lightning beam effect"};
+cvar_t r_lightningbeam_qmbtexture = {CVAR_SAVE, "r_lightningbeam_qmbtexture", "0", "load the qmb textures/particles/lightning.pcx texture instead of generating one, can look better"};
 
 rtexture_t *r_lightningbeamtexture;
 rtexture_t *r_lightningbeamqmbtexture;
@@ -231,12 +231,15 @@ float beamrepeatscale;
 
 void R_DrawLightningBeam_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 {
-       const beam_t *b = cl_beams + surfacenumber;
+       const beam_t *b = cl.beams + surfacenumber;
        rmeshstate_t m;
        vec3_t beamdir, right, up, offset;
        float length, t1, t2;
+       float vertex3f[12*3];
+       float texcoord2f[12*2];
+       float color4f[12*4];
 
-       R_Mesh_Matrix(&r_identitymatrix);
+       R_Mesh_Matrix(&identitymatrix);
 
        // calculate beam direction (beamdir) vector and beam length
        // get difference vector
@@ -282,8 +285,8 @@ void R_DrawLightningBeam_TransparentCallback(const entity_render_t *ent, int sur
                m.tex[0] = R_GetTexture(r_lightningbeamqmbtexture);
        else
                m.tex[0] = R_GetTexture(r_lightningbeamtexture);
-       m.pointer_texcoord[0] = varray_texcoord2f[0];
-       m.pointer_vertex = varray_vertex3f;
+       m.pointer_texcoord[0] = texcoord2f;
+       m.pointer_vertex = vertex3f;
 
        GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
        GL_DepthMask(false);
@@ -295,24 +298,24 @@ void R_DrawLightningBeam_TransparentCallback(const entity_render_t *ent, int sur
 
        // polygon 1, verts 0-3
        VectorScale(right, r_lightningbeam_thickness.value, offset);
-       R_CalcLightningBeamPolygonVertex3f(varray_vertex3f + 0, b->start, b->end, offset);
+       R_CalcLightningBeamPolygonVertex3f(vertex3f + 0, b->start, b->end, offset);
        // polygon 2, verts 4-7
        VectorAdd(right, up, offset);
        VectorScale(offset, r_lightningbeam_thickness.value * 0.70710681f, offset);
-       R_CalcLightningBeamPolygonVertex3f(varray_vertex3f + 12, b->start, b->end, offset);
+       R_CalcLightningBeamPolygonVertex3f(vertex3f + 12, b->start, b->end, offset);
        // polygon 3, verts 8-11
        VectorSubtract(right, up, offset);
        VectorScale(offset, r_lightningbeam_thickness.value * 0.70710681f, offset);
-       R_CalcLightningBeamPolygonVertex3f(varray_vertex3f + 24, b->start, b->end, offset);
-       R_CalcLightningBeamPolygonTexCoord2f(varray_texcoord2f[0] + 0, t1, t2);
-       R_CalcLightningBeamPolygonTexCoord2f(varray_texcoord2f[0] + 8, t1 + 0.33, t2 + 0.33);
-       R_CalcLightningBeamPolygonTexCoord2f(varray_texcoord2f[0] + 16, t1 + 0.66, t2 + 0.66);
+       R_CalcLightningBeamPolygonVertex3f(vertex3f + 24, b->start, b->end, offset);
+       R_CalcLightningBeamPolygonTexCoord2f(texcoord2f + 0, t1, t2);
+       R_CalcLightningBeamPolygonTexCoord2f(texcoord2f + 8, t1 + 0.33, t2 + 0.33);
+       R_CalcLightningBeamPolygonTexCoord2f(texcoord2f + 16, t1 + 0.66, t2 + 0.66);
 
        if (fogenabled)
        {
                // per vertex colors if fog is used
-               m.pointer_color = varray_color4f;
-               R_FogLightningBeam_Vertex3f_Color4f(varray_vertex3f, varray_color4f, 12, r_lightningbeam_color_red.value, r_lightningbeam_color_green.value, r_lightningbeam_color_blue.value, 1);
+               m.pointer_color = color4f;
+               R_FogLightningBeam_Vertex3f_Color4f(vertex3f, color4f, 12, r_lightningbeam_color_red.value, r_lightningbeam_color_green.value, r_lightningbeam_color_blue.value, 1);
        }
        else
        {
@@ -337,7 +340,7 @@ void R_DrawLightningBeams(void)
                return;
 
        beamrepeatscale = 1.0f / r_lightningbeam_repeatdistance.value;
-       for (i = 0, b = cl_beams;i < cl_max_beams;i++, b++)
+       for (i = 0, b = cl.beams;i < cl.num_beams;i++, b++)
        {
                if (b->model && b->endtime >= r_refdef.time && b->lightning)
                {