nkeynes@189: /** nkeynes@223: * $Id: rendcore.c,v 1.6 2006-09-12 12:16:36 nkeynes Exp $ nkeynes@189: * nkeynes@189: * PVR2 renderer core. nkeynes@189: * nkeynes@189: * Copyright (c) 2005 Nathan Keynes. nkeynes@189: * nkeynes@189: * This program is free software; you can redistribute it and/or modify nkeynes@189: * it under the terms of the GNU General Public License as published by nkeynes@189: * the Free Software Foundation; either version 2 of the License, or nkeynes@189: * (at your option) any later version. nkeynes@189: * nkeynes@189: * This program is distributed in the hope that it will be useful, nkeynes@189: * but WITHOUT ANY WARRANTY; without even the implied warranty of nkeynes@189: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the nkeynes@189: * GNU General Public License for more details. nkeynes@189: */ nkeynes@215: #include nkeynes@189: #include "pvr2/pvr2.h" nkeynes@189: #include "asic.h" nkeynes@189: nkeynes@221: int pvr2_poly_depthmode[8] = { GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL, nkeynes@189: GL_GREATER, GL_NOTEQUAL, GL_GEQUAL, nkeynes@189: GL_ALWAYS }; nkeynes@221: int pvr2_poly_srcblend[8] = { nkeynes@189: GL_ZERO, GL_ONE, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR, nkeynes@189: GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA, nkeynes@189: GL_ONE_MINUS_DST_ALPHA }; nkeynes@221: int pvr2_poly_dstblend[8] = { nkeynes@189: GL_ZERO, GL_ONE, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, nkeynes@189: GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA, nkeynes@189: GL_ONE_MINUS_DST_ALPHA }; nkeynes@221: int pvr2_poly_texblend[4] = { nkeynes@189: GL_REPLACE, GL_BLEND, GL_DECAL, GL_MODULATE }; nkeynes@221: int pvr2_render_colour_format[8] = { nkeynes@189: COLFMT_ARGB1555, COLFMT_RGB565, COLFMT_ARGB4444, COLFMT_ARGB1555, nkeynes@189: COLFMT_RGB888, COLFMT_ARGB8888, COLFMT_ARGB8888, COLFMT_ARGB4444 }; nkeynes@189: nkeynes@189: nkeynes@189: #define CULL_NONE 0 nkeynes@189: #define CULL_SMALL 1 nkeynes@189: #define CULL_CCW 2 nkeynes@189: #define CULL_CW 3 nkeynes@189: nkeynes@189: #define SEGMENT_END 0x80000000 nkeynes@189: #define SEGMENT_SORT_TRANS 0x20000000 nkeynes@189: #define SEGMENT_START 0x10000000 nkeynes@189: #define SEGMENT_X(c) (((c) >> 2) & 0x3F) nkeynes@189: #define SEGMENT_Y(c) (((c) >> 8) & 0x3F) nkeynes@189: #define NO_POINTER 0x80000000 nkeynes@189: nkeynes@189: extern char *video_base; nkeynes@189: nkeynes@189: struct tile_segment { nkeynes@189: uint32_t control; nkeynes@189: pvraddr_t opaque_ptr; nkeynes@189: pvraddr_t opaquemod_ptr; nkeynes@189: pvraddr_t trans_ptr; nkeynes@189: pvraddr_t transmod_ptr; nkeynes@189: pvraddr_t punchout_ptr; nkeynes@189: }; nkeynes@189: nkeynes@189: /** nkeynes@189: * Convert a half-float (16-bit) FP number to a regular 32-bit float. nkeynes@189: * Source is 1-bit sign, 5-bit exponent, 10-bit mantissa. nkeynes@189: * TODO: Check the correctness of this. nkeynes@189: */ nkeynes@189: float halftofloat( uint16_t half ) nkeynes@189: { nkeynes@189: union { nkeynes@189: float f; nkeynes@189: uint32_t i; nkeynes@189: } temp; nkeynes@189: int e = ((half & 0x7C00) >> 10) - 15 + 127; nkeynes@189: nkeynes@189: temp.i = ((half & 0x8000) << 16) | (e << 23) | nkeynes@189: ((half & 0x03FF) << 13); nkeynes@189: return temp.f; nkeynes@189: } nkeynes@189: nkeynes@189: nkeynes@189: /** nkeynes@189: * Setup the GL context for the supplied polygon context. nkeynes@189: * @param context pointer to 3 or 5 words of polygon context nkeynes@189: * @param modified boolean flag indicating that the modified nkeynes@189: * version should be used, rather than the normal version. nkeynes@189: */ nkeynes@189: void render_set_context( uint32_t *context, int render_mode ) nkeynes@189: { nkeynes@189: uint32_t poly1 = context[0], poly2, texture; nkeynes@189: if( render_mode == RENDER_FULLMOD ) { nkeynes@189: poly2 = context[3]; nkeynes@189: texture = context[4]; nkeynes@189: } else { nkeynes@189: poly2 = context[1]; nkeynes@189: texture = context[2]; nkeynes@189: } nkeynes@189: nkeynes@189: if( POLY1_DEPTH_ENABLE(poly1) ) { nkeynes@189: glEnable( GL_DEPTH_TEST ); nkeynes@189: glDepthFunc( POLY1_DEPTH_MODE(poly1) ); nkeynes@189: } else { nkeynes@189: glDisable( GL_DEPTH_TEST ); nkeynes@189: } nkeynes@189: nkeynes@189: switch( POLY1_CULL_MODE(poly1) ) { nkeynes@189: case CULL_NONE: nkeynes@189: case CULL_SMALL: nkeynes@189: glDisable( GL_CULL_FACE ); nkeynes@189: break; nkeynes@189: case CULL_CCW: nkeynes@189: glEnable( GL_CULL_FACE ); nkeynes@189: glFrontFace( GL_CW ); nkeynes@189: break; nkeynes@189: case CULL_CW: nkeynes@189: glEnable( GL_CULL_FACE ); nkeynes@189: glFrontFace( GL_CCW ); nkeynes@189: break; nkeynes@189: } nkeynes@189: nkeynes@189: if( POLY1_TEXTURED(poly1) ) { nkeynes@189: int width = POLY2_TEX_WIDTH(poly2); nkeynes@189: int height = POLY2_TEX_HEIGHT(poly2); nkeynes@189: glEnable(GL_TEXTURE_2D); nkeynes@189: texcache_get_texture( (texture&0x001FFFFF)<<3, width, height, texture ); nkeynes@189: glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, POLY2_TEX_BLEND(poly2) ); nkeynes@189: } else { nkeynes@189: glDisable( GL_TEXTURE_2D ); nkeynes@189: } nkeynes@189: nkeynes@189: glShadeModel( POLY1_SHADE_MODEL(poly1) ); nkeynes@189: nkeynes@221: int srcblend = POLY2_SRC_BLEND(poly2); nkeynes@221: int destblend = POLY2_DEST_BLEND(poly2); nkeynes@221: glBlendFunc( srcblend, destblend ); nkeynes@189: if( POLY2_TEX_ALPHA_ENABLE(poly2) ) { nkeynes@189: glEnable(GL_BLEND); nkeynes@189: } else { nkeynes@189: glDisable(GL_BLEND); nkeynes@189: } nkeynes@189: } nkeynes@189: nkeynes@189: void render_vertexes( uint32_t poly1, uint32_t *vertexes, int num_vertexes, int vertex_size, nkeynes@189: int render_mode ) nkeynes@189: { nkeynes@189: int i, m=0; nkeynes@189: nkeynes@189: if( render_mode == RENDER_FULLMOD ) { nkeynes@189: m = (vertex_size - 3)/2; nkeynes@189: } nkeynes@189: nkeynes@189: glBegin( GL_TRIANGLE_STRIP ); nkeynes@189: nkeynes@189: for( i=0; i>16), nkeynes@189: halftofloat(vertexes[m+3]) ); nkeynes@189: argb = vertexes[m+4]; nkeynes@189: } else { nkeynes@189: glTexCoord2f( vertexf[m+3], vertexf[m+4] ); nkeynes@189: argb = vertexes[m+5]; nkeynes@189: } nkeynes@189: } else { nkeynes@189: argb = vertexes[m+3]; nkeynes@189: } nkeynes@189: nkeynes@189: glColor4ub( (GLubyte)(argb >> 16), (GLubyte)(argb >> 8), nkeynes@189: (GLubyte)argb, (GLubyte)(argb >> 24) ); nkeynes@189: glVertex3f( vertexf[0], vertexf[1], vertexf[2] ); nkeynes@189: vertexes += vertex_size; nkeynes@189: } nkeynes@189: nkeynes@189: glEnd(); nkeynes@189: } nkeynes@189: nkeynes@189: /** nkeynes@189: * Render a simple (not auto-sorted) tile nkeynes@189: */ nkeynes@189: void render_tile( pvraddr_t tile_entry, int render_mode, gboolean cheap_modifier_mode ) { nkeynes@215: uint32_t poly_bank = MMIO_READ(PVR2,RENDER_POLYBASE); nkeynes@189: uint32_t *tile_list = (uint32_t *)(video_base+tile_entry); nkeynes@189: do { nkeynes@189: uint32_t entry = *tile_list++; nkeynes@189: if( entry >> 28 == 0x0F ) { nkeynes@189: break; nkeynes@189: } else if( entry >> 28 == 0x0E ) { nkeynes@189: tile_list = (uint32_t *)(video_base + (entry&0x007FFFFF)); nkeynes@189: } else { nkeynes@215: uint32_t *polygon = (uint32_t *)(video_base + poly_bank + ((entry & 0x000FFFFF) << 2)); nkeynes@189: int is_modified = entry & 0x01000000; nkeynes@189: int vertex_length = (entry >> 21) & 0x07; nkeynes@189: int context_length = 3; nkeynes@189: if( is_modified && !cheap_modifier_mode ) { nkeynes@189: context_length = 5; nkeynes@189: vertex_length *= 2 ; nkeynes@189: } nkeynes@189: vertex_length += 3; nkeynes@189: nkeynes@189: if( (entry & 0xE0000000) == 0x80000000 ) { nkeynes@189: /* Triangle(s) */ nkeynes@189: int strip_count = ((entry >> 25) & 0x0F)+1; nkeynes@189: int polygon_length = 3 * vertex_length + context_length; nkeynes@189: int i; nkeynes@189: for( i=0; i> 25) & 0x0F; nkeynes@189: int polygon_length = 4 * vertex_length + context_length; nkeynes@189: int i; nkeynes@189: for( i=0; i>i) ) { nkeynes@189: if( first == -1 ) first = i; nkeynes@189: last = i; nkeynes@189: } nkeynes@189: } nkeynes@189: if( first != -1 ) { nkeynes@189: first = 0; nkeynes@189: render_set_context(polygon, render_mode); nkeynes@189: render_vertexes( *polygon, polygon+context_length + (first*vertex_length), nkeynes@189: (last-first+3), vertex_length, render_mode ); nkeynes@189: } nkeynes@189: } nkeynes@189: } nkeynes@189: } while( 1 ); nkeynes@189: } nkeynes@189: nkeynes@189: void pvr2_render_tilebuffer( int width, int height, int clipx1, int clipy1, nkeynes@189: int clipx2, int clipy2 ) { nkeynes@189: nkeynes@191: pvraddr_t segmentbase = MMIO_READ( PVR2, RENDER_TILEBASE ); nkeynes@189: int tile_sort; nkeynes@189: gboolean cheap_shadow; nkeynes@189: nkeynes@191: int obj_config = MMIO_READ( PVR2, RENDER_OBJCFG ); nkeynes@191: int isp_config = MMIO_READ( PVR2, RENDER_ISPCFG ); nkeynes@191: int shadow_cfg = MMIO_READ( PVR2, RENDER_SHADOW ); nkeynes@189: nkeynes@222: if( (obj_config & 0x00200000) == 0 ) { nkeynes@189: if( isp_config & 1 ) { nkeynes@189: tile_sort = 0; nkeynes@189: } else { nkeynes@189: tile_sort = 2; nkeynes@189: } nkeynes@189: } else { nkeynes@189: tile_sort = 1; nkeynes@189: } nkeynes@189: nkeynes@189: cheap_shadow = shadow_cfg & 0x100 ? TRUE : FALSE; nkeynes@189: nkeynes@189: struct tile_segment *segment = (struct tile_segment *)(video_base + segmentbase); nkeynes@189: nkeynes@215: struct timeval tv_start, tv_end; nkeynes@215: gettimeofday(&tv_start, NULL); nkeynes@189: glEnable( GL_SCISSOR_TEST ); nkeynes@189: while( (segment->control & SEGMENT_END) == 0 ) { nkeynes@221: // fwrite_dump32v( (uint32_t *)segment, sizeof(struct tile_segment), 6, stderr ); nkeynes@189: int tilex = SEGMENT_X(segment->control); nkeynes@189: int tiley = SEGMENT_Y(segment->control); nkeynes@189: nkeynes@189: int x1 = tilex << 5; nkeynes@189: int y1 = tiley << 5; nkeynes@189: if( x1 + 32 <= clipx1 || nkeynes@189: y1 + 32 <= clipy1 || nkeynes@189: x1 >= clipx2 || nkeynes@189: y1 >= clipy2 ) { nkeynes@189: /* Tile completely clipped, skip */ nkeynes@189: segment++; nkeynes@189: continue; nkeynes@189: } nkeynes@215: nkeynes@189: /* Set a scissor on the visible part of the tile */ nkeynes@189: int w = MIN(x1+32, clipx2) - x1; nkeynes@189: int h = MIN(y1+32, clipy2) - y1; nkeynes@189: x1 = MAX(x1,clipx1); nkeynes@189: y1 = MAX(y1,clipy1); nkeynes@189: glScissor( x1, height-y1-h, w, h ); nkeynes@189: nkeynes@189: if( (segment->opaque_ptr & NO_POINTER) == 0 ) { nkeynes@189: if( (segment->opaquemod_ptr & NO_POINTER) == 0 ) { nkeynes@189: /* TODO */ nkeynes@189: } nkeynes@189: render_tile( segment->opaque_ptr, RENDER_NORMAL, cheap_shadow ); nkeynes@189: } nkeynes@189: nkeynes@189: if( (segment->trans_ptr & NO_POINTER) == 0 ) { nkeynes@189: if( (segment->transmod_ptr & NO_POINTER) == 0 ) { nkeynes@189: /* TODO */ nkeynes@189: } nkeynes@222: if( tile_sort == 2 || nkeynes@222: (tile_sort == 1 && ((segment->control & SEGMENT_SORT_TRANS)==0)) ) { nkeynes@189: render_autosort_tile( segment->trans_ptr, RENDER_NORMAL, cheap_shadow ); nkeynes@189: } else { nkeynes@189: render_tile( segment->trans_ptr, RENDER_NORMAL, cheap_shadow ); nkeynes@189: } nkeynes@189: } nkeynes@189: nkeynes@189: if( (segment->punchout_ptr & NO_POINTER) == 0 ) { nkeynes@189: render_tile( segment->punchout_ptr, RENDER_NORMAL, cheap_shadow ); nkeynes@189: } nkeynes@189: segment++; nkeynes@215: nkeynes@189: } nkeynes@189: glDisable( GL_SCISSOR_TEST ); nkeynes@215: nkeynes@215: gettimeofday(&tv_end, NULL); nkeynes@215: timersub(&tv_end,&tv_start, &tv_start); nkeynes@189: }