lxdream 0.9.1| filename | src/pvr2/rendcore.c |
| changeset | 635:76c63aac3590 |
| prev | 561:533f6b478071 |
| author | nkeynes |
| date | Thu Feb 14 13:54:11 2008 +0000 (14 years ago) |
| branch | lxdream-render |
| permissions | -rw-r--r-- |
| last change | Commit render work in progress. Main changes: * Preliminary OSMesa support * Move the generic gl code out to pvr2/ * Implement scene data structure + reader * Remove the 1/z adjustments |
| file | annotate | diff | log | raw |
1.1 --- a/src/pvr2/rendcore.c Tue Jan 01 05:08:38 2008 +00001.2 +++ b/src/pvr2/rendcore.c Thu Feb 14 13:54:11 2008 +00001.3 @@ -16,6 +16,8 @@1.4 * GNU General Public License for more details.1.5 */1.6 #include <sys/time.h>1.7 +#include <assert.h>1.8 +#include <string.h>1.9 #include "pvr2/pvr2.h"1.10 #include "asic.h"1.11 #include "display.h"1.12 @@ -41,33 +43,11 @@1.13 COLFMT_BGRA1555, COLFMT_RGB565, COLFMT_BGRA4444, COLFMT_BGRA1555,1.14 COLFMT_BGR888, COLFMT_BGRA8888, COLFMT_BGRA8888, COLFMT_BGRA4444 };1.16 -1.17 -#define CULL_NONE 01.18 -#define CULL_SMALL 11.19 -#define CULL_CCW 21.20 -#define CULL_CW 31.21 -1.22 -#define SEGMENT_END 0x800000001.23 -#define SEGMENT_ZCLEAR 0x400000001.24 -#define SEGMENT_SORT_TRANS 0x200000001.25 -#define SEGMENT_START 0x100000001.26 -#define SEGMENT_X(c) (((c) >> 2) & 0x3F)1.27 -#define SEGMENT_Y(c) (((c) >> 8) & 0x3F)1.28 -#define NO_POINTER 0x800000001.29 -1.30 extern char *video_base;1.32 gboolean pvr2_force_fragment_alpha = FALSE;1.33 gboolean pvr2_debug_render = FALSE;1.35 -struct tile_segment {1.36 - uint32_t control;1.37 - pvraddr_t opaque_ptr;1.38 - pvraddr_t opaquemod_ptr;1.39 - pvraddr_t trans_ptr;1.40 - pvraddr_t transmod_ptr;1.41 - pvraddr_t punchout_ptr;1.42 -};1.44 void render_print_tilelist( FILE *f, uint32_t tile_entry );1.46 @@ -272,9 +252,9 @@1.47 (unpacked[3].y - unpacked[1].y) * diff1.x) / detxy;1.48 float s = ((unpacked[3].y - unpacked[1].y) * diff0.x -1.49 (unpacked[3].x - unpacked[1].x) * diff0.y) / detxy;1.50 - diff0.z = (1/unpacked[0].z) - (1/unpacked[1].z);1.51 - diff1.z = (1/unpacked[2].z) - (1/unpacked[1].z);1.52 - unpacked[3].z = 1/((1/unpacked[1].z) + (t*diff0.z) + (s*diff1.z));1.53 + diff0.z = unpacked[0].z - unpacked[1].z;1.54 + diff1.z = unpacked[2].z - unpacked[1].z;1.55 + unpacked[3].z = unpacked[1].z + (t*diff0.z) + (s*diff1.z);1.57 diff0.u = unpacked[0].u - unpacked[1].u;1.58 diff0.v = unpacked[0].v - unpacked[1].v;1.59 @@ -320,7 +300,8 @@1.60 vertexes[i]->offset_rgba[1],1.61 vertexes[i]->offset_rgba[2] );1.62 }1.63 - glVertex3f( vertexes[i]->x, vertexes[i]->y, 1/vertexes[i]->z );1.64 + assert( vertexes[i]->z > 0 && !isinf(vertexes[i]->z) );1.65 + glVertex3f( vertexes[i]->x, vertexes[i]->y, vertexes[i]->z );1.66 }1.68 glEnd();1.69 @@ -375,7 +356,8 @@1.70 glSecondaryColor3ubEXT( (GLubyte)(spec >> 16), (GLubyte)(spec >> 8),1.71 (GLubyte)spec );1.72 }1.73 - glVertex3f( vertexf[0], vertexf[1], 1/vertexf[2] );1.74 + // assert( vertexf[2] > 0 && !isinf(vertexf[2]) );1.75 + glVertex3f( vertexf[0], vertexf[1], vertexf[2] );1.76 vertexes += vertex_size;1.77 }1.79 @@ -545,13 +527,12 @@1.80 glDisable( GL_SCISSOR_TEST );1.81 }1.83 -static float render_find_maximum_tile_z( pvraddr_t tile_entry, float inputz )1.84 +static void render_find_maximum_tile_z( pvraddr_t tile_entry, float *minimumz, float *maximumz )1.85 {1.86 uint32_t poly_bank = MMIO_READ(PVR2,RENDER_POLYBASE);1.87 uint32_t *tile_list = (uint32_t *)(video_base+tile_entry);1.88 int shadow_cfg = MMIO_READ( PVR2, RENDER_SHADOW ) & 0x100;1.89 int i, j;1.90 - float z = inputz;1.91 do {1.92 uint32_t entry = *tile_list++;1.93 if( entry >> 28 == 0x0F ) {1.94 @@ -573,8 +554,10 @@1.95 float *vertexz = (float *)(polygon+context_length+2);1.96 for( i=0; i<strip_count; i++ ) {1.97 for( j=0; j<3; j++ ) {1.98 - if( *vertexz > z ) {1.99 - z = *vertexz;1.100 + if( *vertexz > *maximumz ) {1.101 + *maximumz = *vertexz;1.102 + } else if( *vertexz < *minimumz ) {1.103 + *minimumz = *vertexz;1.104 }1.105 vertexz += vertex_length;1.106 }1.107 @@ -587,8 +570,10 @@1.108 float *vertexz = (float *)(polygon+context_length+2);1.109 for( i=0; i<strip_count; i++ ) {1.110 for( j=0; j<4; j++ ) {1.111 - if( *vertexz > z ) {1.112 - z = *vertexz;1.113 + if( *vertexz > *maximumz ) {1.114 + *maximumz = *vertexz;1.115 + } else if( *vertexz < *minimumz ) {1.116 + *minimumz = *vertexz;1.117 }1.118 vertexz += vertex_length;1.119 }1.120 @@ -599,48 +584,50 @@1.121 int i;1.122 float *vertexz = (float *)polygon+context_length+2;1.123 for( i=0; i<6; i++ ) {1.124 - if( (entry & (0x40000000>>i)) && *vertexz > z ) {1.125 - z = *vertexz;1.126 + if( (entry & (0x40000000>>i)) ) {1.127 + if( *vertexz > *maximumz ) {1.128 + *maximumz = *vertexz;1.129 + } else if( *vertexz < *minimumz ) {1.130 + *minimumz = *vertexz;1.131 + }1.132 }1.133 vertexz += vertex_length;1.134 }1.135 }1.136 }1.137 } while(1);1.138 - return z;1.139 }1.141 /**1.142 * Scan through the scene to determine the largest z value (in order to set up1.143 * an appropriate near clip plane).1.144 */1.145 -float pvr2_render_find_maximum_z( )1.146 +void pvr2_render_find_z_range( float *minimumz, float *maximumz )1.147 {1.148 pvraddr_t segmentbase = MMIO_READ( PVR2, RENDER_TILEBASE );1.149 - float maximumz = MMIO_READF( PVR2, RENDER_FARCLIP ); /* Initialize to the far clip plane */1.150 + *minimumz = MMIO_READF( PVR2, RENDER_FARCLIP ); /* Initialize to the far clip plane */1.151 + *maximumz = *minimumz;1.153 struct tile_segment *segment = (struct tile_segment *)(video_base + segmentbase);1.154 do {1.156 if( (segment->opaque_ptr & NO_POINTER) == 0 ) {1.157 - maximumz = render_find_maximum_tile_z(segment->opaque_ptr, maximumz);1.158 + render_find_maximum_tile_z(segment->opaque_ptr, minimumz, maximumz);1.159 }1.160 if( (segment->opaquemod_ptr & NO_POINTER) == 0 ) {1.161 - maximumz = render_find_maximum_tile_z(segment->opaquemod_ptr, maximumz);1.162 + render_find_maximum_tile_z(segment->opaquemod_ptr, minimumz, maximumz);1.163 }1.164 if( (segment->trans_ptr & NO_POINTER) == 0 ) {1.165 - maximumz = render_find_maximum_tile_z(segment->trans_ptr, maximumz);1.166 + render_find_maximum_tile_z(segment->trans_ptr, minimumz, maximumz);1.167 }1.168 if( (segment->transmod_ptr & NO_POINTER) == 0 ) {1.169 - maximumz = render_find_maximum_tile_z(segment->transmod_ptr, maximumz);1.170 + render_find_maximum_tile_z(segment->transmod_ptr, minimumz, maximumz);1.171 }1.172 if( (segment->punchout_ptr & NO_POINTER) == 0 ) {1.173 - maximumz = render_find_maximum_tile_z(segment->punchout_ptr, maximumz);1.174 + render_find_maximum_tile_z(segment->punchout_ptr, minimumz, maximumz);1.175 }1.177 } while( ((segment++)->control & SEGMENT_END) == 0 );1.178 -1.179 - return 1/maximumz;1.180 }1.182 /**
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