nkeynes@100 | 1 | /**
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nkeynes@144 | 2 | * $Id: render.c,v 1.8 2006-05-15 08:28:52 nkeynes Exp $
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nkeynes@100 | 3 | *
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nkeynes@100 | 4 | * PVR2 Renderer support. This is where the real work happens.
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nkeynes@100 | 5 | *
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nkeynes@100 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@100 | 7 | *
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nkeynes@100 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@100 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@100 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@100 | 11 | * (at your option) any later version.
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nkeynes@100 | 12 | *
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nkeynes@100 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@100 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@100 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@100 | 16 | * GNU General Public License for more details.
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nkeynes@100 | 17 | */
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nkeynes@100 | 18 |
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nkeynes@100 | 19 | #include "pvr2/pvr2.h"
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nkeynes@100 | 20 | #include "asic.h"
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nkeynes@103 | 21 |
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nkeynes@103 | 22 |
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nkeynes@118 | 23 | #define POLY_COLOUR_PACKED 0x00000000
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nkeynes@118 | 24 | #define POLY_COLOUR_FLOAT 0x00000010
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nkeynes@118 | 25 | #define POLY_COLOUR_INTENSITY 0x00000020
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nkeynes@118 | 26 | #define POLY_COLOUR_INTENSITY_PREV 0x00000030
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nkeynes@103 | 27 |
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nkeynes@103 | 28 | static int pvr2_poly_vertexes[4] = { 3, 4, 6, 8 };
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nkeynes@103 | 29 | static int pvr2_poly_type[4] = { GL_TRIANGLES, GL_QUADS, GL_TRIANGLE_STRIP, GL_TRIANGLE_STRIP };
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nkeynes@103 | 30 | static int pvr2_poly_depthmode[8] = { GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL,
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nkeynes@103 | 31 | GL_GREATER, GL_NOTEQUAL, GL_GEQUAL,
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nkeynes@103 | 32 | GL_ALWAYS };
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nkeynes@103 | 33 | static int pvr2_poly_srcblend[8] = {
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nkeynes@103 | 34 | GL_ZERO, GL_ONE, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR,
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nkeynes@103 | 35 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
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nkeynes@103 | 36 | GL_ONE_MINUS_DST_ALPHA };
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nkeynes@103 | 37 | static int pvr2_poly_dstblend[8] = {
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nkeynes@103 | 38 | GL_ZERO, GL_ONE, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR,
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nkeynes@103 | 39 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
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nkeynes@103 | 40 | GL_ONE_MINUS_DST_ALPHA };
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nkeynes@108 | 41 | static int pvr2_poly_texblend[4] = {
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nkeynes@108 | 42 | GL_REPLACE, GL_BLEND, GL_DECAL, GL_MODULATE };
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nkeynes@103 | 43 | static int pvr2_render_colour_format[8] = {
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nkeynes@103 | 44 | COLFMT_ARGB1555, COLFMT_RGB565, COLFMT_ARGB4444, COLFMT_ARGB1555,
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nkeynes@103 | 45 | COLFMT_RGB888, COLFMT_ARGB8888, COLFMT_ARGB8888, COLFMT_ARGB4444 };
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nkeynes@103 | 46 |
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nkeynes@103 | 47 | #define POLY_STRIP_TYPE(poly) ( pvr2_poly_type[((poly->command)>>18)&0x03] )
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nkeynes@103 | 48 | #define POLY_STRIP_VERTEXES(poly) ( pvr2_poly_vertexes[((poly->command)>>18)&0x03] )
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nkeynes@103 | 49 | #define POLY_DEPTH_MODE(poly) ( pvr2_poly_depthmode[poly->poly_cfg>>29] )
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nkeynes@128 | 50 | #define POLY_DEPTH_WRITE(poly) ((poly->poly_cfg&0x04000000) == 0 )
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nkeynes@103 | 51 | #define POLY_TEX_WIDTH(poly) ( 1<< (((poly->poly_mode >> 3) & 0x07 ) + 3) )
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nkeynes@103 | 52 | #define POLY_TEX_HEIGHT(poly) ( 1<< (((poly->poly_mode) & 0x07 ) + 3) )
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nkeynes@103 | 53 | #define POLY_BLEND_SRC(poly) ( pvr2_poly_srcblend[(poly->poly_mode) >> 29] )
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nkeynes@103 | 54 | #define POLY_BLEND_DEST(poly) ( pvr2_poly_dstblend[((poly->poly_mode)>>26)&0x07] )
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nkeynes@108 | 55 | #define POLY_TEX_BLEND(poly) ( pvr2_poly_texblend[((poly->poly_mode) >> 6)&0x03] )
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nkeynes@118 | 56 | #define POLY_COLOUR_TYPE(poly) ( poly->command & 0x00000030 )
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nkeynes@100 | 57 |
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nkeynes@100 | 58 | /**
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nkeynes@103 | 59 | * Describes a rendering buffer that's actually held in GL, for when we need
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nkeynes@103 | 60 | * to fetch the bits back to vram.
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nkeynes@103 | 61 | */
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nkeynes@103 | 62 | typedef struct pvr2_render_buffer {
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nkeynes@103 | 63 | uint32_t render_addr; /* The actual address rendered to in pvr ram */
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nkeynes@103 | 64 | int width, height;
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nkeynes@103 | 65 | int colour_format;
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nkeynes@103 | 66 | } *pvr2_render_buffer_t;
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nkeynes@103 | 67 |
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nkeynes@103 | 68 | struct pvr2_render_buffer front_buffer;
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nkeynes@103 | 69 | struct pvr2_render_buffer back_buffer;
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nkeynes@103 | 70 |
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nkeynes@103 | 71 | struct tile_descriptor {
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nkeynes@103 | 72 | uint32_t header[6];
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nkeynes@103 | 73 | struct tile_pointers {
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nkeynes@103 | 74 | uint32_t tile_id;
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nkeynes@103 | 75 | uint32_t opaque_ptr;
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nkeynes@103 | 76 | uint32_t opaque_mod_ptr;
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nkeynes@103 | 77 | uint32_t trans_ptr;
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nkeynes@103 | 78 | uint32_t trans_mod_ptr;
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nkeynes@103 | 79 | uint32_t punchout_ptr;
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nkeynes@103 | 80 | } tile[0];
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nkeynes@103 | 81 | };
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nkeynes@103 | 82 |
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nkeynes@103 | 83 | /* Textured polygon */
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nkeynes@103 | 84 | struct pvr2_poly {
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nkeynes@103 | 85 | uint32_t command;
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nkeynes@103 | 86 | uint32_t poly_cfg; /* Bitmask */
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nkeynes@103 | 87 | uint32_t poly_mode; /* texture/blending mask */
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nkeynes@103 | 88 | uint32_t texture; /* texture data */
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nkeynes@103 | 89 | float alpha;
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nkeynes@103 | 90 | float red;
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nkeynes@103 | 91 | float green;
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nkeynes@103 | 92 | float blue;
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nkeynes@103 | 93 | };
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nkeynes@103 | 94 |
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nkeynes@103 | 95 | struct pvr2_specular_highlight {
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nkeynes@103 | 96 | float base_alpha;
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nkeynes@103 | 97 | float base_red;
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nkeynes@103 | 98 | float base_green;
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nkeynes@103 | 99 | float base_blue;
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nkeynes@103 | 100 | float offset_alpha;
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nkeynes@103 | 101 | float offset_red;
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nkeynes@103 | 102 | float offset_green;
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nkeynes@103 | 103 | float offset_blue;
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nkeynes@103 | 104 | };
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nkeynes@103 | 105 |
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nkeynes@103 | 106 |
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nkeynes@118 | 107 | struct pvr2_vertex_packed {
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nkeynes@103 | 108 | uint32_t command;
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nkeynes@103 | 109 | float x, y, z;
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nkeynes@103 | 110 | float s,t;
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nkeynes@118 | 111 | uint32_t colour;
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nkeynes@103 | 112 | float f;
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nkeynes@103 | 113 | };
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nkeynes@103 | 114 |
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nkeynes@128 | 115 | struct pvr2_vertex_float {
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nkeynes@128 | 116 | uint32_t command;
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nkeynes@128 | 117 | float x,y,z;
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nkeynes@128 | 118 | float a, r, g, b;
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nkeynes@128 | 119 | };
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nkeynes@128 | 120 |
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nkeynes@128 | 121 | union pvr2_vertex {
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nkeynes@128 | 122 | struct pvr2_vertex_packed pack;
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nkeynes@128 | 123 | struct pvr2_vertex_float flt;
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nkeynes@128 | 124 | };
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nkeynes@128 | 125 |
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nkeynes@128 | 126 | typedef struct pvr2_bgplane_packed {
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nkeynes@128 | 127 | uint32_t poly_cfg, poly_mode;
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nkeynes@128 | 128 | uint32_t texture_mode;
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nkeynes@128 | 129 | float x1, y1, z1;
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nkeynes@128 | 130 | uint32_t colour1;
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nkeynes@128 | 131 | float x2, y2, z2;
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nkeynes@128 | 132 | uint32_t colour2;
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nkeynes@128 | 133 | float x3, y3, z3;
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nkeynes@128 | 134 | uint32_t colour3;
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nkeynes@128 | 135 | } *pvr2_bgplane_packed_t;
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nkeynes@128 | 136 |
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nkeynes@128 | 137 |
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nkeynes@103 | 138 |
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nkeynes@103 | 139 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
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nkeynes@103 | 140 | gboolean backBuffer );
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nkeynes@103 | 141 |
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nkeynes@108 | 142 | int pvr2_render_font_list = -1;
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nkeynes@132 | 143 | int pvr2_render_trace = 0;
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nkeynes@108 | 144 |
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nkeynes@132 | 145 | int glPrintf( int x, int y, const char *fmt, ... )
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nkeynes@108 | 146 | {
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nkeynes@108 | 147 | va_list ap; /* our argument pointer */
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nkeynes@108 | 148 | char buf[256];
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nkeynes@108 | 149 | int len;
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nkeynes@108 | 150 | if (fmt == NULL) /* if there is no string to draw do nothing */
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nkeynes@108 | 151 | return;
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nkeynes@108 | 152 | va_start(ap, fmt);
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nkeynes@108 | 153 | len = vsnprintf(buf, sizeof(buf), fmt, ap);
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nkeynes@108 | 154 | va_end(ap);
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nkeynes@108 | 155 |
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nkeynes@108 | 156 |
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nkeynes@108 | 157 | glPushAttrib(GL_LIST_BIT);
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nkeynes@132 | 158 | glDisable( GL_DEPTH_TEST );
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nkeynes@132 | 159 | glDisable( GL_BLEND );
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nkeynes@132 | 160 | glDisable( GL_TEXTURE_2D );
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nkeynes@132 | 161 | glDisable( GL_ALPHA_TEST );
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nkeynes@108 | 162 | glListBase(pvr2_render_font_list - 32);
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nkeynes@132 | 163 | glColor3f( 1.0, 1.0, 1.0 );
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nkeynes@132 | 164 | glRasterPos2i( x, y );
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nkeynes@108 | 165 | glCallLists(len, GL_UNSIGNED_BYTE, buf);
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nkeynes@108 | 166 | glPopAttrib();
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nkeynes@108 | 167 |
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nkeynes@108 | 168 | return len;
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nkeynes@108 | 169 | }
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nkeynes@108 | 170 |
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nkeynes@103 | 171 |
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nkeynes@103 | 172 | gboolean pvr2_render_init( void )
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nkeynes@103 | 173 | {
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nkeynes@103 | 174 | front_buffer.render_addr = -1;
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nkeynes@103 | 175 | back_buffer.render_addr = -1;
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nkeynes@103 | 176 | }
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nkeynes@103 | 177 |
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nkeynes@103 | 178 | /**
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nkeynes@103 | 179 | * Display a rendered frame if one is available.
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nkeynes@103 | 180 | * @param address An address in PVR ram (0500000 range).
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nkeynes@103 | 181 | * @return TRUE if a frame was available to be displayed, otherwise false.
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nkeynes@103 | 182 | */
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nkeynes@103 | 183 | gboolean pvr2_render_display_frame( uint32_t address )
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nkeynes@103 | 184 | {
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nkeynes@103 | 185 | if( front_buffer.render_addr == address ) {
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nkeynes@103 | 186 | /* Current front buffer is already displayed, so do nothing
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nkeynes@103 | 187 | * and tell the caller that all is well.
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nkeynes@103 | 188 | */
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nkeynes@103 | 189 | return TRUE;
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nkeynes@103 | 190 | }
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nkeynes@103 | 191 | if( back_buffer.render_addr == address ) {
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nkeynes@103 | 192 | /* The more useful case - back buffer is to be displayed. Swap
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nkeynes@103 | 193 | * the buffers
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nkeynes@103 | 194 | */
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nkeynes@144 | 195 | display_driver->display_back_buffer();
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nkeynes@103 | 196 | front_buffer = back_buffer;
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nkeynes@103 | 197 | back_buffer.render_addr = -1;
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nkeynes@103 | 198 | return TRUE;
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nkeynes@103 | 199 | }
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nkeynes@103 | 200 | return FALSE;
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nkeynes@108 | 201 | }
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nkeynes@103 | 202 |
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nkeynes@103 | 203 | /**
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nkeynes@103 | 204 | * Prepare the OpenGL context to receive instructions for a new frame.
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nkeynes@103 | 205 | */
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nkeynes@103 | 206 | static void pvr2_render_prepare_context( sh4addr_t render_addr,
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nkeynes@103 | 207 | uint32_t width, uint32_t height,
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nkeynes@103 | 208 | uint32_t colour_format,
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nkeynes@128 | 209 | float bgplanez,
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nkeynes@103 | 210 | gboolean texture_target )
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nkeynes@103 | 211 | {
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nkeynes@103 | 212 | /* Select and initialize the render context */
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nkeynes@144 | 213 | display_driver->set_render_format( width, height, colour_format, texture_target );
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nkeynes@103 | 214 |
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nkeynes@132 | 215 | if( pvr2_render_font_list == -1 ) {
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nkeynes@132 | 216 | pvr2_render_font_list = video_glx_load_font( "-*-helvetica-*-r-normal--16-*-*-*-p-*-iso8859-1");
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nkeynes@132 | 217 | }
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nkeynes@132 | 218 |
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nkeynes@103 | 219 | if( back_buffer.render_addr != -1 &&
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nkeynes@103 | 220 | back_buffer.render_addr != render_addr ) {
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nkeynes@103 | 221 | /* There's a current back buffer, and we're rendering somewhere else -
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nkeynes@103 | 222 | * flush the back buffer back to vram and start a new back buffer
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nkeynes@103 | 223 | */
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nkeynes@103 | 224 | pvr2_render_copy_to_sh4( &back_buffer, TRUE );
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nkeynes@103 | 225 | }
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nkeynes@103 | 226 |
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nkeynes@103 | 227 | if( front_buffer.render_addr == render_addr ) {
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nkeynes@103 | 228 | /* In case we've been asked to render to the current front buffer -
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nkeynes@103 | 229 | * invalidate the front buffer and render to the back buffer, ensuring
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nkeynes@103 | 230 | * we swap at the next frame display.
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nkeynes@103 | 231 | */
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nkeynes@103 | 232 | front_buffer.render_addr = -1;
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nkeynes@103 | 233 | }
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nkeynes@103 | 234 | back_buffer.render_addr = render_addr;
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nkeynes@103 | 235 | back_buffer.width = width;
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nkeynes@103 | 236 | back_buffer.height = height;
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nkeynes@103 | 237 | back_buffer.colour_format = colour_format;
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nkeynes@103 | 238 |
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nkeynes@103 | 239 | /* Setup the display model */
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nkeynes@103 | 240 | glDrawBuffer(GL_BACK);
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nkeynes@103 | 241 | glShadeModel(GL_SMOOTH);
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nkeynes@103 | 242 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
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nkeynes@103 | 243 | glViewport( 0, 0, width, height );
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nkeynes@103 | 244 | glMatrixMode(GL_PROJECTION);
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nkeynes@103 | 245 | glLoadIdentity();
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nkeynes@128 | 246 | glOrtho( 0, width, height, 0, bgplanez, -1 );
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nkeynes@103 | 247 | glMatrixMode(GL_MODELVIEW);
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nkeynes@103 | 248 | glLoadIdentity();
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nkeynes@108 | 249 | glCullFace( GL_BACK );
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nkeynes@103 | 250 |
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nkeynes@103 | 251 | /* Clear out the buffers */
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nkeynes@103 | 252 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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nkeynes@128 | 253 | glClearDepth(bgplanez);
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nkeynes@103 | 254 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
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nkeynes@103 | 255 | }
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nkeynes@103 | 256 |
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nkeynes@118 | 257 | static void pvr2_dump_display_list( uint32_t * display_list, uint32_t length )
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nkeynes@118 | 258 | {
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nkeynes@118 | 259 | uint32_t i;
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nkeynes@128 | 260 | gboolean vertex = FALSE;
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nkeynes@128 | 261 | for( i =0; i<length>>2; i++ ) {
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nkeynes@128 | 262 | if( (i % 8) == 0 ) {
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nkeynes@118 | 263 | if( i != 0 )
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nkeynes@118 | 264 | fprintf( stderr, "\n" );
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nkeynes@132 | 265 | fprintf( stderr, "%08X:", i*4 );
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nkeynes@128 | 266 | if( display_list[i] == 0xE0000000 ||
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nkeynes@128 | 267 | display_list[i] == 0xF0000000 )
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nkeynes@128 | 268 | vertex = TRUE;
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nkeynes@128 | 269 | else vertex = FALSE;
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nkeynes@118 | 270 | }
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nkeynes@128 | 271 | if( vertex && (i%8) > 0 && (i%8) < 4 )
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nkeynes@128 | 272 | fprintf( stderr, " %f", ((float *)display_list)[i] );
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nkeynes@128 | 273 | else
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nkeynes@128 | 274 | fprintf( stderr, " %08X", display_list[i] );
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nkeynes@118 | 275 | }
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nkeynes@128 | 276 | fprintf( stderr, "\n" );
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nkeynes@118 | 277 | }
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nkeynes@118 | 278 |
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nkeynes@103 | 279 | static void pvr2_render_display_list( uint32_t *display_list, uint32_t length )
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nkeynes@103 | 280 | {
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nkeynes@103 | 281 | uint32_t *cmd_ptr = display_list;
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nkeynes@118 | 282 | int strip_length = 0, vertex_count = 0;
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nkeynes@118 | 283 | int colour_type;
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nkeynes@103 | 284 | gboolean textured = FALSE;
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nkeynes@132 | 285 | gboolean shaded = FALSE;
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nkeynes@103 | 286 | struct pvr2_poly *poly;
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nkeynes@132 | 287 | if( pvr2_render_trace ) {
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nkeynes@132 | 288 | fprintf( stderr, "-------- %d\n", pvr2_get_frame_count() );
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nkeynes@132 | 289 | pvr2_dump_display_list( display_list, length );
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nkeynes@132 | 290 | }
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nkeynes@132 | 291 | while( cmd_ptr < display_list+(length>>2) ) {
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nkeynes@118 | 292 | unsigned int cmd = *cmd_ptr >> 24;
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nkeynes@118 | 293 | switch( cmd ) {
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nkeynes@103 | 294 | case PVR2_CMD_POLY_OPAQUE:
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nkeynes@128 | 295 | case PVR2_CMD_POLY_TRANS:
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nkeynes@132 | 296 | case PVR2_CMD_POLY_PUNCHOUT:
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nkeynes@103 | 297 | poly = (struct pvr2_poly *)cmd_ptr;
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nkeynes@103 | 298 | if( poly->command & PVR2_POLY_TEXTURED ) {
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nkeynes@103 | 299 | uint32_t addr = PVR2_TEX_ADDR(poly->texture);
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nkeynes@103 | 300 | int width = POLY_TEX_WIDTH(poly);
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nkeynes@103 | 301 | int height = POLY_TEX_HEIGHT(poly);
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nkeynes@108 | 302 | glEnable( GL_TEXTURE_2D );
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nkeynes@103 | 303 | texcache_get_texture( addr, width, height, poly->texture );
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nkeynes@103 | 304 | textured = TRUE;
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nkeynes@108 | 305 | glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, POLY_TEX_BLEND(poly) );
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nkeynes@103 | 306 | } else {
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nkeynes@103 | 307 | textured = FALSE;
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nkeynes@103 | 308 | glDisable( GL_TEXTURE_2D );
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nkeynes@103 | 309 | }
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nkeynes@103 | 310 | glBlendFunc( POLY_BLEND_SRC(poly), POLY_BLEND_DEST(poly) );
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nkeynes@103 | 311 | if( poly->command & PVR2_POLY_SPECULAR ) {
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nkeynes@103 | 312 | /* Second block expected */
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nkeynes@103 | 313 | }
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nkeynes@103 | 314 | if( POLY_DEPTH_WRITE(poly) ) {
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nkeynes@103 | 315 | glEnable( GL_DEPTH_TEST );
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nkeynes@103 | 316 | glDepthFunc( POLY_DEPTH_MODE(poly) );
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nkeynes@103 | 317 | } else {
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nkeynes@103 | 318 | glDisable( GL_DEPTH_TEST );
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nkeynes@103 | 319 | }
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nkeynes@103 | 320 |
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nkeynes@108 | 321 | switch( (poly->poly_cfg >> 27) & 0x03 ) {
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nkeynes@108 | 322 | case 0:
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nkeynes@108 | 323 | case 1:
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nkeynes@108 | 324 | glDisable( GL_CULL_FACE );
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nkeynes@108 | 325 | break;
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nkeynes@108 | 326 | case 2:
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nkeynes@108 | 327 | glEnable( GL_CULL_FACE );
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nkeynes@108 | 328 | glFrontFace( GL_CW );
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nkeynes@108 | 329 | break;
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nkeynes@108 | 330 | case 3:
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nkeynes@108 | 331 | glEnable( GL_CULL_FACE );
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nkeynes@108 | 332 | glFrontFace( GL_CCW );
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nkeynes@108 | 333 | }
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nkeynes@118 | 334 | strip_length = POLY_STRIP_VERTEXES( poly );
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nkeynes@118 | 335 | colour_type = POLY_COLOUR_TYPE( poly );
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nkeynes@118 | 336 | vertex_count = 0;
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nkeynes@132 | 337 | if( poly->command & PVR2_POLY_SHADED ) {
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nkeynes@132 | 338 | shaded = TRUE;
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nkeynes@132 | 339 | } else {
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nkeynes@132 | 340 | shaded = FALSE;
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nkeynes@132 | 341 | }
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nkeynes@132 | 342 | if( poly->poly_mode & PVR2_POLY_MODE_TEXALPHA ) {
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nkeynes@132 | 343 | glDisable( GL_BLEND );
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nkeynes@132 | 344 | } else {
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nkeynes@132 | 345 | glEnable( GL_BLEND );
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nkeynes@132 | 346 | }
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nkeynes@132 | 347 |
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nkeynes@132 | 348 | break;
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nkeynes@132 | 349 | case PVR2_CMD_MOD_OPAQUE:
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nkeynes@132 | 350 | case PVR2_CMD_MOD_TRANS:
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nkeynes@132 | 351 | /* TODO */
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nkeynes@132 | 352 | break;
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nkeynes@132 | 353 | case PVR2_CMD_END_OF_LIST:
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nkeynes@103 | 354 | break;
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nkeynes@103 | 355 | case PVR2_CMD_VERTEX_LAST:
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nkeynes@103 | 356 | case PVR2_CMD_VERTEX:
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nkeynes@118 | 357 | if( vertex_count == 0 ) {
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nkeynes@132 | 358 | glBegin( GL_TRIANGLE_STRIP );
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nkeynes@103 | 359 | }
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nkeynes@118 | 360 | vertex_count++;
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nkeynes@118 | 361 |
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nkeynes@118 | 362 | struct pvr2_vertex_packed *vertex = (struct pvr2_vertex_packed *)cmd_ptr;
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nkeynes@103 | 363 | if( textured ) {
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nkeynes@103 | 364 | glTexCoord2f( vertex->s, vertex->t );
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nkeynes@128 | 365 |
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nkeynes@132 | 366 | if( shaded || vertex_count == 1) {
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nkeynes@132 | 367 | switch( colour_type ) {
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nkeynes@132 | 368 | case POLY_COLOUR_PACKED:
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nkeynes@132 | 369 | glColor4ub( vertex->colour >> 16, vertex->colour >> 8,
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nkeynes@132 | 370 | vertex->colour, vertex->colour >> 24 );
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nkeynes@132 | 371 | break;
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nkeynes@132 | 372 | }
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nkeynes@128 | 373 | }
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nkeynes@128 | 374 | } else {
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nkeynes@132 | 375 | if( shaded || vertex_count == 1 ) {
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nkeynes@132 | 376 | switch( colour_type ) {
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nkeynes@132 | 377 | case POLY_COLOUR_PACKED:
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nkeynes@132 | 378 | glColor4ub( vertex->colour >> 16, vertex->colour >> 8,
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nkeynes@132 | 379 | vertex->colour, vertex->colour >> 24 );
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nkeynes@132 | 380 | break;
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nkeynes@132 | 381 | case POLY_COLOUR_FLOAT:
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nkeynes@132 | 382 | {
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nkeynes@132 | 383 | struct pvr2_vertex_float *v = (struct pvr2_vertex_float *)cmd_ptr;
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nkeynes@132 | 384 | glColor4f( v->r, v->g, v->b, v->a );
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nkeynes@132 | 385 | }
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nkeynes@132 | 386 | break;
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nkeynes@128 | 387 | }
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nkeynes@128 | 388 | }
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nkeynes@103 | 389 | }
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nkeynes@118 | 390 |
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nkeynes@103 | 391 | glVertex3f( vertex->x, vertex->y, vertex->z );
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nkeynes@103 | 392 |
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nkeynes@118 | 393 | if( cmd == PVR2_CMD_VERTEX_LAST ) {
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nkeynes@103 | 394 | glEnd();
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nkeynes@118 | 395 | vertex_count = 0;
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nkeynes@118 | 396 | }
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nkeynes@103 | 397 | break;
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nkeynes@132 | 398 | default:
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nkeynes@132 | 399 | ERROR( "Unhandled command %08X in display list", *cmd_ptr );
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nkeynes@132 | 400 | pvr2_dump_display_list( display_list, length );
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nkeynes@132 | 401 | return;
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nkeynes@103 | 402 | }
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nkeynes@103 | 403 | cmd_ptr += 8; /* Next record */
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nkeynes@103 | 404 | }
|
nkeynes@103 | 405 | }
|
nkeynes@103 | 406 |
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nkeynes@128 | 407 | #define MIN3( a,b,c ) ((a) < (b) ? ( (a) < (c) ? (a) : (c) ) : ((b) < (c) ? (b) : (c)) )
|
nkeynes@128 | 408 | #define MAX3( a,b,c ) ((a) > (b) ? ( (a) > (c) ? (a) : (c) ) : ((b) > (c) ? (b) : (c)) )
|
nkeynes@128 | 409 |
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nkeynes@128 | 410 | /**
|
nkeynes@128 | 411 | * Render the background plane as best we can. Unfortunately information
|
nkeynes@128 | 412 | * is a little scant, to say the least.
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nkeynes@128 | 413 | */
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nkeynes@128 | 414 | void pvr2_render_draw_backplane( uint32_t mode, uint32_t *poly )
|
nkeynes@128 | 415 | {
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nkeynes@128 | 416 | if( (mode >> 24) == 0x01 ) {
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nkeynes@128 | 417 | /* Packed colour. I think */
|
nkeynes@128 | 418 | pvr2_bgplane_packed_t bg = (pvr2_bgplane_packed_t)poly;
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nkeynes@128 | 419 | if( bg->colour1 != bg->colour2 || bg->colour2 != bg->colour3 ) {
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nkeynes@128 | 420 | WARN( "Multiple background colours specified. Confused" );
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nkeynes@128 | 421 | }
|
nkeynes@128 | 422 | float x1 = MIN3( bg->x1, bg->x2, bg->x3 );
|
nkeynes@128 | 423 | float y1 = MIN3( bg->y1, bg->y2, bg->y3 );
|
nkeynes@128 | 424 | float x2 = MAX3( bg->x1, bg->x2, bg->x3 );
|
nkeynes@128 | 425 | float y2 = MAX3( bg->y1, bg->y2, bg->y3 );
|
nkeynes@128 | 426 | float z = MIN3( bg->z1, bg->z2, bg->z3 );
|
nkeynes@128 | 427 | glDisable( GL_TEXTURE_2D );
|
nkeynes@128 | 428 | glDisable( GL_DEPTH_TEST );
|
nkeynes@128 | 429 | glColor3ub( (uint8_t)(bg->colour1 >> 16), (uint8_t)(bg->colour1 >> 8),
|
nkeynes@128 | 430 | (uint8_t)bg->colour1 );
|
nkeynes@128 | 431 | glBegin( GL_QUADS );
|
nkeynes@128 | 432 | glVertex3f( x1, y1, z );
|
nkeynes@128 | 433 | glVertex3f( x2, y1, z );
|
nkeynes@128 | 434 | glVertex3f( x2, y2, z );
|
nkeynes@128 | 435 | glVertex3f( x1, y2, z );
|
nkeynes@128 | 436 | glEnd();
|
nkeynes@128 | 437 | } else {
|
nkeynes@128 | 438 | WARN( "Unknown bgplane mode: %08X", mode );
|
nkeynes@128 | 439 | fwrite_dump( poly, 48, stderr );
|
nkeynes@128 | 440 | }
|
nkeynes@128 | 441 | }
|
nkeynes@128 | 442 |
|
nkeynes@103 | 443 | /**
|
nkeynes@103 | 444 | * Render a complete scene into the OpenGL back buffer.
|
nkeynes@103 | 445 | * Note: this will probably need to be broken up eventually once timings are
|
nkeynes@100 | 446 | * determined.
|
nkeynes@100 | 447 | */
|
nkeynes@103 | 448 | void pvr2_render_scene( )
|
nkeynes@100 | 449 | {
|
nkeynes@103 | 450 | struct tile_descriptor *tile_desc =
|
nkeynes@103 | 451 | (struct tile_descriptor *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, TILEBASE ));
|
nkeynes@100 | 452 |
|
nkeynes@103 | 453 | uint32_t render_addr = MMIO_READ( PVR2, RENDADDR1 );
|
nkeynes@103 | 454 | gboolean render_to_tex;
|
nkeynes@103 | 455 | if( render_addr & 0x01000000 ) {
|
nkeynes@103 | 456 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE_INT;
|
nkeynes@103 | 457 | /* Heuristic - if we're rendering to the interlaced region we're
|
nkeynes@103 | 458 | * probably creating a texture rather than rendering actual output.
|
nkeynes@103 | 459 | * We can optimise for this case a little
|
nkeynes@103 | 460 | */
|
nkeynes@103 | 461 | render_to_tex = TRUE;
|
nkeynes@118 | 462 | WARN( "Render to texture not supported properly yet" );
|
nkeynes@103 | 463 | } else {
|
nkeynes@103 | 464 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE;
|
nkeynes@103 | 465 | render_to_tex = FALSE;
|
nkeynes@103 | 466 | }
|
nkeynes@128 | 467 |
|
nkeynes@128 | 468 | float bgplanez = MMIO_READF( PVR2, BGPLANEZ );
|
nkeynes@103 | 469 | uint32_t render_mode = MMIO_READ( PVR2, RENDMODE );
|
nkeynes@103 | 470 | int width = 640; /* FIXME - get this from the tile buffer */
|
nkeynes@103 | 471 | int height = 480;
|
nkeynes@103 | 472 | int colour_format = pvr2_render_colour_format[render_mode&0x07];
|
nkeynes@103 | 473 | pvr2_render_prepare_context( render_addr, width, height, colour_format,
|
nkeynes@128 | 474 | bgplanez, render_to_tex );
|
nkeynes@103 | 475 |
|
nkeynes@103 | 476 | uint32_t *display_list =
|
nkeynes@103 | 477 | (uint32_t *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, OBJBASE ));
|
nkeynes@128 | 478 |
|
nkeynes@103 | 479 | uint32_t display_length = *display_list++;
|
nkeynes@103 | 480 |
|
nkeynes@103 | 481 | int clip_x = MMIO_READ( PVR2, HCLIP ) & 0x03FF;
|
nkeynes@103 | 482 | int clip_y = MMIO_READ( PVR2, VCLIP ) & 0x03FF;
|
nkeynes@103 | 483 | int clip_width = ((MMIO_READ( PVR2, HCLIP ) >> 16) & 0x03FF) - clip_x + 1;
|
nkeynes@103 | 484 | int clip_height= ((MMIO_READ( PVR2, VCLIP ) >> 16) & 0x03FF) - clip_y + 1;
|
nkeynes@103 | 485 |
|
nkeynes@103 | 486 | if( clip_x == 0 && clip_y == 0 && clip_width == width && clip_height == height ) {
|
nkeynes@103 | 487 | glDisable( GL_SCISSOR_TEST );
|
nkeynes@103 | 488 | } else {
|
nkeynes@103 | 489 | glEnable( GL_SCISSOR_TEST );
|
nkeynes@103 | 490 | glScissor( clip_x, clip_y, clip_width, clip_height );
|
nkeynes@103 | 491 | }
|
nkeynes@103 | 492 |
|
nkeynes@103 | 493 | /* Fog setup goes here */
|
nkeynes@103 | 494 |
|
nkeynes@128 | 495 | /* Render the background plane */
|
nkeynes@128 | 496 | uint32_t bgplane_mode = MMIO_READ(PVR2, BGPLANE);
|
nkeynes@128 | 497 | uint32_t *bgplane = display_list + (((bgplane_mode & 0x00FFFFFF)) >> 3) - 1;
|
nkeynes@128 | 498 | pvr2_render_draw_backplane( bgplane_mode, bgplane );
|
nkeynes@128 | 499 |
|
nkeynes@103 | 500 | /* Render the display list */
|
nkeynes@103 | 501 | pvr2_render_display_list( display_list, display_length );
|
nkeynes@103 | 502 |
|
nkeynes@103 | 503 | /* Post-render cleanup and update */
|
nkeynes@103 | 504 |
|
nkeynes@108 | 505 | /* Add frame, fps, etc data */
|
nkeynes@132 | 506 | glPrintf( 4, 16, "Frame %d", pvr2_get_frame_count() );
|
nkeynes@103 | 507 |
|
nkeynes@103 | 508 | /* Generate end of render event */
|
nkeynes@100 | 509 | asic_event( EVENT_PVR_RENDER_DONE );
|
nkeynes@132 | 510 | DEBUG( "Rendered frame %d", pvr2_get_frame_count() );
|
nkeynes@100 | 511 | }
|
nkeynes@103 | 512 |
|
nkeynes@103 | 513 |
|
nkeynes@103 | 514 | /**
|
nkeynes@103 | 515 | * Flush the indicated render buffer back to PVR. Caller is responsible for
|
nkeynes@103 | 516 | * tracking whether there is actually anything in the buffer.
|
nkeynes@103 | 517 | *
|
nkeynes@103 | 518 | * @param buffer A render buffer indicating the address to store to, and the
|
nkeynes@103 | 519 | * format the data needs to be in.
|
nkeynes@103 | 520 | * @param backBuffer TRUE to flush the back buffer, FALSE for
|
nkeynes@103 | 521 | * the front buffer.
|
nkeynes@103 | 522 | */
|
nkeynes@103 | 523 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
|
nkeynes@103 | 524 | gboolean backBuffer )
|
nkeynes@103 | 525 | {
|
nkeynes@103 | 526 | if( buffer->render_addr == -1 )
|
nkeynes@103 | 527 | return;
|
nkeynes@103 | 528 | GLenum type, format = GL_RGBA;
|
nkeynes@103 | 529 | int size = buffer->width * buffer->height;
|
nkeynes@103 | 530 |
|
nkeynes@103 | 531 | switch( buffer->colour_format ) {
|
nkeynes@103 | 532 | case COLFMT_RGB565:
|
nkeynes@103 | 533 | type = GL_UNSIGNED_SHORT_5_6_5;
|
nkeynes@103 | 534 | format = GL_RGB;
|
nkeynes@103 | 535 | size <<= 1;
|
nkeynes@103 | 536 | break;
|
nkeynes@103 | 537 | case COLFMT_RGB888:
|
nkeynes@103 | 538 | type = GL_UNSIGNED_INT;
|
nkeynes@103 | 539 | format = GL_RGB;
|
nkeynes@103 | 540 | size = (size<<1)+size;
|
nkeynes@103 | 541 | break;
|
nkeynes@103 | 542 | case COLFMT_ARGB1555:
|
nkeynes@103 | 543 | type = GL_UNSIGNED_SHORT_5_5_5_1;
|
nkeynes@103 | 544 | size <<= 1;
|
nkeynes@103 | 545 | break;
|
nkeynes@103 | 546 | case COLFMT_ARGB4444:
|
nkeynes@103 | 547 | type = GL_UNSIGNED_SHORT_4_4_4_4;
|
nkeynes@103 | 548 | size <<= 1;
|
nkeynes@103 | 549 | break;
|
nkeynes@103 | 550 | case COLFMT_ARGB8888:
|
nkeynes@103 | 551 | type = GL_UNSIGNED_INT_8_8_8_8;
|
nkeynes@103 | 552 | size <<= 2;
|
nkeynes@103 | 553 | break;
|
nkeynes@103 | 554 | }
|
nkeynes@103 | 555 |
|
nkeynes@103 | 556 | if( backBuffer ) {
|
nkeynes@103 | 557 | glFinish();
|
nkeynes@103 | 558 | glReadBuffer( GL_BACK );
|
nkeynes@103 | 559 | } else {
|
nkeynes@103 | 560 | glReadBuffer( GL_FRONT );
|
nkeynes@103 | 561 | }
|
nkeynes@103 | 562 |
|
nkeynes@103 | 563 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
|
nkeynes@103 | 564 | /* Interlaced buffer. Go the double copy... :( */
|
nkeynes@103 | 565 | char target[size];
|
nkeynes@103 | 566 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
|
nkeynes@103 | 567 | pvr2_vram64_write( buffer->render_addr, target, size );
|
nkeynes@103 | 568 | } else {
|
nkeynes@103 | 569 | /* Regular buffer - go direct */
|
nkeynes@103 | 570 | char *target = mem_get_region( buffer->render_addr );
|
nkeynes@103 | 571 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
|
nkeynes@103 | 572 | }
|
nkeynes@103 | 573 | }
|
nkeynes@103 | 574 |
|
nkeynes@103 | 575 |
|
nkeynes@103 | 576 | /**
|
nkeynes@103 | 577 | * Copy data from PVR ram into the GL render buffer.
|
nkeynes@103 | 578 | *
|
nkeynes@103 | 579 | * @param buffer A render buffer indicating the address to read from, and the
|
nkeynes@103 | 580 | * format the data is in.
|
nkeynes@103 | 581 | * @param backBuffer TRUE to write the back buffer, FALSE for
|
nkeynes@103 | 582 | * the front buffer.
|
nkeynes@103 | 583 | */
|
nkeynes@103 | 584 | void pvr2_render_copy_from_sh4( pvr2_render_buffer_t buffer,
|
nkeynes@103 | 585 | gboolean backBuffer )
|
nkeynes@103 | 586 | {
|
nkeynes@103 | 587 | if( buffer->render_addr == -1 )
|
nkeynes@103 | 588 | return;
|
nkeynes@103 | 589 | GLenum type, format = GL_RGBA;
|
nkeynes@103 | 590 | int size = buffer->width * buffer->height;
|
nkeynes@103 | 591 |
|
nkeynes@103 | 592 | switch( buffer->colour_format ) {
|
nkeynes@103 | 593 | case COLFMT_RGB565:
|
nkeynes@103 | 594 | type = GL_UNSIGNED_SHORT_5_6_5;
|
nkeynes@103 | 595 | format = GL_RGB;
|
nkeynes@103 | 596 | size <<= 1;
|
nkeynes@103 | 597 | break;
|
nkeynes@103 | 598 | case COLFMT_RGB888:
|
nkeynes@103 | 599 | type = GL_UNSIGNED_INT;
|
nkeynes@103 | 600 | format = GL_RGB;
|
nkeynes@103 | 601 | size = (size<<1)+size;
|
nkeynes@103 | 602 | break;
|
nkeynes@103 | 603 | case COLFMT_ARGB1555:
|
nkeynes@103 | 604 | type = GL_UNSIGNED_SHORT_5_5_5_1;
|
nkeynes@103 | 605 | size <<= 1;
|
nkeynes@103 | 606 | break;
|
nkeynes@103 | 607 | case COLFMT_ARGB4444:
|
nkeynes@103 | 608 | type = GL_UNSIGNED_SHORT_4_4_4_4;
|
nkeynes@103 | 609 | size <<= 1;
|
nkeynes@103 | 610 | break;
|
nkeynes@103 | 611 | case COLFMT_ARGB8888:
|
nkeynes@103 | 612 | type = GL_UNSIGNED_INT_8_8_8_8;
|
nkeynes@103 | 613 | size <<= 2;
|
nkeynes@103 | 614 | break;
|
nkeynes@103 | 615 | }
|
nkeynes@103 | 616 |
|
nkeynes@103 | 617 | if( backBuffer ) {
|
nkeynes@103 | 618 | glDrawBuffer( GL_BACK );
|
nkeynes@103 | 619 | } else {
|
nkeynes@103 | 620 | glDrawBuffer( GL_FRONT );
|
nkeynes@103 | 621 | }
|
nkeynes@103 | 622 |
|
nkeynes@103 | 623 | glRasterPos2i( 0, 0 );
|
nkeynes@103 | 624 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
|
nkeynes@103 | 625 | /* Interlaced buffer. Go the double copy... :( */
|
nkeynes@103 | 626 | char target[size];
|
nkeynes@103 | 627 | pvr2_vram64_read( target, buffer->render_addr, size );
|
nkeynes@103 | 628 | glDrawPixels( buffer->width, buffer->height,
|
nkeynes@103 | 629 | format, type, target );
|
nkeynes@103 | 630 | } else {
|
nkeynes@103 | 631 | /* Regular buffer - go direct */
|
nkeynes@103 | 632 | char *target = mem_get_region( buffer->render_addr );
|
nkeynes@103 | 633 | glDrawPixels( buffer->width, buffer->height,
|
nkeynes@103 | 634 | format, type, target );
|
nkeynes@103 | 635 | }
|
nkeynes@103 | 636 | }
|