lxdream 0.9.1| filename | src/pvr2/rendbkg.c |
| changeset | 339:95b084ec9cb3 |
| prev | 331:a6048d3a9a79 |
| next | 429:e581b90c3fb3 |
| author | nkeynes |
| date | Mon Jan 29 11:25:40 2007 +0000 (17 years ago) |
| permissions | -rw-r--r-- |
| last change | Change to use common render_unpack_vertexes Parse the mode word in more detail |
| file | annotate | diff | log | raw |
1.1 --- a/src/pvr2/rendbkg.c Fri Jan 26 01:37:39 2007 +00001.2 +++ b/src/pvr2/rendbkg.c Mon Jan 29 11:25:40 2007 +00001.3 @@ -1,5 +1,5 @@1.4 /**1.5 - * $Id: rendbkg.c,v 1.5 2007-01-26 01:37:39 nkeynes Exp $1.6 + * $Id: rendbkg.c,v 1.6 2007-01-29 11:25:40 nkeynes Exp $1.7 *1.8 * PVR2 background renderer.1.9 *1.10 @@ -43,16 +43,6 @@1.11 #define MAX_VERTEXES 2561.12 #define MAX_REGIONS 2561.14 -/**1.15 - * Structure to hold an unpacked vertex1.16 - */1.17 -struct vertex_all {1.18 - float x,y,z;1.19 - float u,v;1.20 - float rgba[4]; /* Note - RGBA order, as preferred by GL */1.21 - float spec_rgba[4];1.22 -};1.23 -1.24 #define FARGB_A(x) (((float)(((x)>>24)+1))/256.0)1.25 #define FARGB_R(x) (((float)((((x)>>16)&0xFF)+1))/256.0)1.26 #define FARGB_G(x) (((float)((((x)>>8)&0xFF)+1))/256.0)1.27 @@ -77,7 +67,7 @@1.28 static int compute_colour_line( float center_x, float center_y, float center_k,1.29 int width, int height, float target_k,1.30 float detxy, float detxk, float detyk,1.31 - struct vertex_all *target ) {1.32 + struct vertex_unpacked *target ) {1.33 int num_points = 0;1.34 float tmpk = (target_k - center_k) * detxy;1.35 float x0 = -1;1.36 @@ -151,44 +141,10 @@1.37 struct bkg_scene {1.38 int num_vertexes;1.39 int num_regions;1.40 - struct vertex_all vertexes[MAX_VERTEXES];1.41 + struct vertex_unpacked vertexes[MAX_VERTEXES];1.42 struct bkg_region regions[MAX_REGIONS];1.43 };1.45 -void parse_vertexes( uint32_t *polygon, int num_vertexes, struct vertex_all *result )1.46 -{1.47 - uint32_t *vertexes = polygon + 3;1.48 - int i,m = 0;1.49 - for( i=0; i<num_vertexes; i++ ) {1.50 - float *vertexf = (float *)vertexes;1.51 - result[i].x = vertexf[0];1.52 - result[i].y = vertexf[1];1.53 - result[i].z = 1/vertexf[2];1.54 - uint32_t argb;1.55 - if( POLY1_TEXTURED(*polygon) ) {1.56 - if( POLY1_UV16(*polygon) ) {1.57 - result[i].u = halftofloat(vertexes[m+3]>>16);1.58 - result[i].v = halftofloat(vertexes[m+3]);1.59 - argb = vertexes[m+4];1.60 - vertexes += 5;1.61 - } else {1.62 - result[i].u = vertexf[m+3];1.63 - result[i].v = vertexf[m+4];1.64 - argb = vertexes[m+5];1.65 - vertexes += 6;1.66 - }1.67 - } else {1.68 - argb = vertexes[m+3];1.69 - vertexes += 4;1.70 - }1.71 - result[i].rgba[0] = FARGB_R(argb);1.72 - result[i].rgba[1] = FARGB_G(argb);1.73 - result[i].rgba[2] = FARGB_B(argb);1.74 - result[i].rgba[3] = FARGB_A(argb);1.75 - }1.76 -1.77 -}1.78 -1.79 /**1.80 * Constants returned by compute_line_intersection. Note that for these purposes,1.81 * "Left" means the point(s) result in a negative value in the line equation, while1.82 @@ -309,7 +265,7 @@1.83 *num_right_vertex_out = 0;1.84 int last = 0;1.85 for( i=0; i<num_vertex_in; i++ ) {1.86 - struct vertex_all *vertex = &scene->vertexes[vertex_in[i]];1.87 + struct vertex_unpacked *vertex = &scene->vertexes[vertex_in[i]];1.88 float r = a1 * vertex->x + b1 * vertex->y + c1;1.89 if( r <= 0 ) {1.90 if( last == 1 ) {1.91 @@ -461,22 +417,22 @@1.92 * @param compute An array of vertexes to compute. x and y must be1.93 * preset, other values are computed.1.94 */1.95 -static void bkg_compute_scene( struct vertex_all *base, int width, int height,1.96 +static void bkg_compute_scene( struct vertex_unpacked *base, int width, int height,1.97 struct bkg_scene *scene )1.98 {1.99 - struct vertex_all center;1.100 - struct vertex_all diff0, diff1;1.101 + struct vertex_unpacked center;1.102 + struct vertex_unpacked diff0, diff1;1.103 int i,k;1.105 center.x = base[1].x;1.106 center.y = base[1].y;1.107 - center.z = base[1].z;1.108 - diff0.x = base[0].x - base[1].x;1.109 - diff0.y = base[0].y - base[1].y;1.110 - diff0.z = base[0].z - base[1].z;1.111 - diff1.x = base[2].x - base[1].x;1.112 - diff1.y = base[2].y - base[1].y;1.113 - diff1.z = base[2].z - base[1].z;1.114 + center.z = (1/base[1].z);1.115 + diff0.x = base[0].x - center.x;1.116 + diff0.y = base[0].y - center.y;1.117 + diff0.z = (1/base[0].z) - center.z;1.118 + diff1.x = base[2].x - center.x;1.119 + diff1.y = base[2].y - center.y;1.120 + diff1.z = (1/base[2].z) - center.z;1.122 float detxy = ((diff1.y) * (diff0.x)) - ((diff0.y) * (diff1.x));1.124 @@ -503,6 +459,7 @@1.125 scene->vertexes[i].rgba[1] = base[2].rgba[1];1.126 scene->vertexes[i].rgba[2] = base[2].rgba[2];1.127 scene->vertexes[i].rgba[3] = base[2].rgba[3];1.128 + scene->vertexes[i].z = 1/base[2].z;1.129 scene->vertexes[i].u = base[2].u;1.130 scene->vertexes[i].v = base[2].v;1.131 }1.132 @@ -626,16 +583,28 @@1.135 void render_backplane( uint32_t *polygon, uint32_t width, uint32_t height, uint32_t mode ) {1.136 - struct vertex_all vertex[3];1.137 + struct vertex_unpacked vertex[3];1.138 int screen_vertexes[4] = {0,1,2,3};1.139 struct bkg_scene scene;1.140 int i,j,k, num_vertexes;1.141 + int vertex_length = (mode >> 24) & 0x07;1.142 + int cheap_shadow = MMIO_READ( PVR2, RENDER_SHADOW ) & 0x100;1.143 + int is_modified = mode & 0x08000000;1.144 + int context_length = 3;1.145 + if( is_modified && !cheap_shadow ) {1.146 + context_length = 5;1.147 + vertex_length *= 2;1.148 + }1.149 + vertex_length += 3;1.150 + context_length += (mode & 0x07) * vertex_length;1.151 +1.153 - parse_vertexes(polygon, 3, vertex);1.154 - render_set_context(polygon, 0);1.155 + render_unpack_vertexes( vertex, *polygon, polygon+context_length, 3, vertex_length,1.156 + RENDER_NORMAL );1.157 + bkg_compute_scene(vertex, width, height, &scene);1.158 + render_set_context(polygon, RENDER_NORMAL);1.159 glDisable(GL_CULL_FACE);1.160 glDisable(GL_DEPTH_TEST);1.161 glBlendFunc(GL_ONE, GL_ZERO); /* For now, just disable alpha blending on the bkg */1.162 - bkg_compute_scene(vertex, width, height, &scene);1.163 bkg_render_region(&scene, 0, screen_vertexes, 4, *polygon);1.164 }
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