nkeynes@100 | 1 | /**
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nkeynes@103 | 2 | * $Id: render.c,v 1.2 2006-03-13 12:39:07 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@103 | 23 | #define POLY_COLOUR_ARGB8888 0x00000000
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nkeynes@103 | 24 | #define POLY_COLOUR_ARGBFLOAT 0x00000010
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nkeynes@103 | 25 |
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nkeynes@103 | 26 | static int pvr2_poly_vertexes[4] = { 3, 4, 6, 8 };
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nkeynes@103 | 27 | static int pvr2_poly_type[4] = { GL_TRIANGLES, GL_QUADS, GL_TRIANGLE_STRIP, GL_TRIANGLE_STRIP };
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nkeynes@103 | 28 | static int pvr2_poly_depthmode[8] = { GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL,
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nkeynes@103 | 29 | GL_GREATER, GL_NOTEQUAL, GL_GEQUAL,
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nkeynes@103 | 30 | GL_ALWAYS };
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nkeynes@103 | 31 | static int pvr2_poly_srcblend[8] = {
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nkeynes@103 | 32 | GL_ZERO, GL_ONE, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR,
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nkeynes@103 | 33 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
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nkeynes@103 | 34 | GL_ONE_MINUS_DST_ALPHA };
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nkeynes@103 | 35 | static int pvr2_poly_dstblend[8] = {
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nkeynes@103 | 36 | GL_ZERO, GL_ONE, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR,
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nkeynes@103 | 37 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
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nkeynes@103 | 38 | GL_ONE_MINUS_DST_ALPHA };
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nkeynes@103 | 39 | static int pvr2_render_colour_format[8] = {
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nkeynes@103 | 40 | COLFMT_ARGB1555, COLFMT_RGB565, COLFMT_ARGB4444, COLFMT_ARGB1555,
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nkeynes@103 | 41 | COLFMT_RGB888, COLFMT_ARGB8888, COLFMT_ARGB8888, COLFMT_ARGB4444 };
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nkeynes@103 | 42 |
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nkeynes@103 | 43 | #define POLY_STRIP_TYPE(poly) ( pvr2_poly_type[((poly->command)>>18)&0x03] )
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nkeynes@103 | 44 | #define POLY_STRIP_VERTEXES(poly) ( pvr2_poly_vertexes[((poly->command)>>18)&0x03] )
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nkeynes@103 | 45 | #define POLY_DEPTH_MODE(poly) ( pvr2_poly_depthmode[poly->poly_cfg>>29] )
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nkeynes@103 | 46 | #define POLY_DEPTH_WRITE(poly) (poly->poly_cfg&0x04000000)
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nkeynes@103 | 47 | #define POLY_TEX_WIDTH(poly) ( 1<< (((poly->poly_mode >> 3) & 0x07 ) + 3) )
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nkeynes@103 | 48 | #define POLY_TEX_HEIGHT(poly) ( 1<< (((poly->poly_mode) & 0x07 ) + 3) )
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nkeynes@103 | 49 | #define POLY_BLEND_SRC(poly) ( pvr2_poly_srcblend[(poly->poly_mode) >> 29] )
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nkeynes@103 | 50 | #define POLY_BLEND_DEST(poly) ( pvr2_poly_dstblend[((poly->poly_mode)>>26)&0x07] )
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nkeynes@100 | 51 |
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nkeynes@100 | 52 | extern uint32_t pvr2_frame_counter;
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nkeynes@100 | 53 |
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nkeynes@100 | 54 | /**
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nkeynes@103 | 55 | * Describes a rendering buffer that's actually held in GL, for when we need
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nkeynes@103 | 56 | * to fetch the bits back to vram.
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nkeynes@103 | 57 | */
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nkeynes@103 | 58 | typedef struct pvr2_render_buffer {
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nkeynes@103 | 59 | uint32_t render_addr; /* The actual address rendered to in pvr ram */
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nkeynes@103 | 60 | int width, height;
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nkeynes@103 | 61 | int colour_format;
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nkeynes@103 | 62 | } *pvr2_render_buffer_t;
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nkeynes@103 | 63 |
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nkeynes@103 | 64 | struct pvr2_render_buffer front_buffer;
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nkeynes@103 | 65 | struct pvr2_render_buffer back_buffer;
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nkeynes@103 | 66 |
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nkeynes@103 | 67 | struct tile_descriptor {
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nkeynes@103 | 68 | uint32_t header[6];
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nkeynes@103 | 69 | struct tile_pointers {
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nkeynes@103 | 70 | uint32_t tile_id;
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nkeynes@103 | 71 | uint32_t opaque_ptr;
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nkeynes@103 | 72 | uint32_t opaque_mod_ptr;
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nkeynes@103 | 73 | uint32_t trans_ptr;
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nkeynes@103 | 74 | uint32_t trans_mod_ptr;
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nkeynes@103 | 75 | uint32_t punchout_ptr;
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nkeynes@103 | 76 | } tile[0];
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nkeynes@103 | 77 | };
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nkeynes@103 | 78 |
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nkeynes@103 | 79 | /* Textured polygon */
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nkeynes@103 | 80 | struct pvr2_poly {
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nkeynes@103 | 81 | uint32_t command;
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nkeynes@103 | 82 | uint32_t poly_cfg; /* Bitmask */
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nkeynes@103 | 83 | uint32_t poly_mode; /* texture/blending mask */
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nkeynes@103 | 84 | uint32_t texture; /* texture data */
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nkeynes@103 | 85 | float alpha;
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nkeynes@103 | 86 | float red;
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nkeynes@103 | 87 | float green;
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nkeynes@103 | 88 | float blue;
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nkeynes@103 | 89 | };
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nkeynes@103 | 90 |
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nkeynes@103 | 91 | struct pvr2_specular_highlight {
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nkeynes@103 | 92 | float base_alpha;
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nkeynes@103 | 93 | float base_red;
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nkeynes@103 | 94 | float base_green;
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nkeynes@103 | 95 | float base_blue;
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nkeynes@103 | 96 | float offset_alpha;
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nkeynes@103 | 97 | float offset_red;
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nkeynes@103 | 98 | float offset_green;
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nkeynes@103 | 99 | float offset_blue;
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nkeynes@103 | 100 | };
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nkeynes@103 | 101 |
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nkeynes@103 | 102 |
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nkeynes@103 | 103 | struct pvr2_vertex_basic {
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nkeynes@103 | 104 | uint32_t command;
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nkeynes@103 | 105 | float x, y, z;
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nkeynes@103 | 106 | float s,t;
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nkeynes@103 | 107 | uint32_t col;
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nkeynes@103 | 108 | float f;
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nkeynes@103 | 109 | };
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nkeynes@103 | 110 |
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nkeynes@103 | 111 |
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nkeynes@103 | 112 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
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nkeynes@103 | 113 | gboolean backBuffer );
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nkeynes@103 | 114 |
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nkeynes@103 | 115 |
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nkeynes@103 | 116 | gboolean pvr2_render_init( void )
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nkeynes@103 | 117 | {
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nkeynes@103 | 118 | front_buffer.render_addr = -1;
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nkeynes@103 | 119 | back_buffer.render_addr = -1;
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nkeynes@103 | 120 | }
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nkeynes@103 | 121 |
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nkeynes@103 | 122 | /**
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nkeynes@103 | 123 | * Display a rendered frame if one is available.
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nkeynes@103 | 124 | * @param address An address in PVR ram (0500000 range).
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nkeynes@103 | 125 | * @return TRUE if a frame was available to be displayed, otherwise false.
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nkeynes@103 | 126 | */
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nkeynes@103 | 127 | gboolean pvr2_render_display_frame( uint32_t address )
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nkeynes@103 | 128 | {
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nkeynes@103 | 129 | if( front_buffer.render_addr == address ) {
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nkeynes@103 | 130 | /* Current front buffer is already displayed, so do nothing
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nkeynes@103 | 131 | * and tell the caller that all is well.
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nkeynes@103 | 132 | */
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nkeynes@103 | 133 | return TRUE;
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nkeynes@103 | 134 | }
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nkeynes@103 | 135 | if( back_buffer.render_addr == address ) {
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nkeynes@103 | 136 | /* The more useful case - back buffer is to be displayed. Swap
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nkeynes@103 | 137 | * the buffers
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nkeynes@103 | 138 | */
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nkeynes@103 | 139 | video_driver->display_back_buffer();
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nkeynes@103 | 140 | front_buffer = back_buffer;
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nkeynes@103 | 141 | back_buffer.render_addr = -1;
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nkeynes@103 | 142 | return TRUE;
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nkeynes@103 | 143 | }
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nkeynes@103 | 144 | return FALSE;
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nkeynes@103 | 145 | }
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nkeynes@103 | 146 |
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nkeynes@103 | 147 | /**
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nkeynes@103 | 148 | * Prepare the OpenGL context to receive instructions for a new frame.
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nkeynes@103 | 149 | */
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nkeynes@103 | 150 | static void pvr2_render_prepare_context( sh4addr_t render_addr,
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nkeynes@103 | 151 | uint32_t width, uint32_t height,
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nkeynes@103 | 152 | uint32_t colour_format,
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nkeynes@103 | 153 | gboolean texture_target )
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nkeynes@103 | 154 | {
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nkeynes@103 | 155 | /* Select and initialize the render context */
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nkeynes@103 | 156 | video_driver->set_render_format( width, height, colour_format, texture_target );
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nkeynes@103 | 157 |
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nkeynes@103 | 158 | if( back_buffer.render_addr != -1 &&
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nkeynes@103 | 159 | back_buffer.render_addr != render_addr ) {
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nkeynes@103 | 160 | /* There's a current back buffer, and we're rendering somewhere else -
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nkeynes@103 | 161 | * flush the back buffer back to vram and start a new back buffer
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nkeynes@103 | 162 | */
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nkeynes@103 | 163 | pvr2_render_copy_to_sh4( &back_buffer, TRUE );
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nkeynes@103 | 164 | }
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nkeynes@103 | 165 |
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nkeynes@103 | 166 | if( front_buffer.render_addr == render_addr ) {
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nkeynes@103 | 167 | /* In case we've been asked to render to the current front buffer -
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nkeynes@103 | 168 | * invalidate the front buffer and render to the back buffer, ensuring
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nkeynes@103 | 169 | * we swap at the next frame display.
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nkeynes@103 | 170 | */
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nkeynes@103 | 171 | front_buffer.render_addr = -1;
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nkeynes@103 | 172 | }
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nkeynes@103 | 173 | back_buffer.render_addr = render_addr;
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nkeynes@103 | 174 | back_buffer.width = width;
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nkeynes@103 | 175 | back_buffer.height = height;
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nkeynes@103 | 176 | back_buffer.colour_format = colour_format;
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nkeynes@103 | 177 |
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nkeynes@103 | 178 | /* Setup the display model */
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nkeynes@103 | 179 | glDrawBuffer(GL_BACK);
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nkeynes@103 | 180 | glShadeModel(GL_SMOOTH);
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nkeynes@103 | 181 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
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nkeynes@103 | 182 | glViewport( 0, 0, width, height );
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nkeynes@103 | 183 | glMatrixMode(GL_PROJECTION);
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nkeynes@103 | 184 | glLoadIdentity();
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nkeynes@103 | 185 | glOrtho( 0, width, height, 0, 0, 65535 );
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nkeynes@103 | 186 | glMatrixMode(GL_MODELVIEW);
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nkeynes@103 | 187 | glLoadIdentity();
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nkeynes@103 | 188 |
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nkeynes@103 | 189 | /* Clear out the buffers */
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nkeynes@103 | 190 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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nkeynes@103 | 191 | glClearDepth(1.0f);
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nkeynes@103 | 192 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
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nkeynes@103 | 193 | }
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nkeynes@103 | 194 |
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nkeynes@103 | 195 | static void pvr2_render_display_list( uint32_t *display_list, uint32_t length )
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nkeynes@103 | 196 | {
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nkeynes@103 | 197 | uint32_t *cmd_ptr = display_list;
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nkeynes@103 | 198 | int expect_vertexes = 0;
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nkeynes@103 | 199 | gboolean textured = FALSE;
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nkeynes@103 | 200 | struct pvr2_poly *poly;
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nkeynes@103 | 201 | while( cmd_ptr < display_list+length ) {
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nkeynes@103 | 202 | switch( *cmd_ptr >> 24 ) {
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nkeynes@103 | 203 | case PVR2_CMD_POLY_OPAQUE:
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nkeynes@103 | 204 | poly = (struct pvr2_poly *)cmd_ptr;
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nkeynes@103 | 205 |
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nkeynes@103 | 206 | if( poly->command & PVR2_POLY_TEXTURED ) {
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nkeynes@103 | 207 | uint32_t addr = PVR2_TEX_ADDR(poly->texture);
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nkeynes@103 | 208 | int width = POLY_TEX_WIDTH(poly);
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nkeynes@103 | 209 | int height = POLY_TEX_HEIGHT(poly);
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nkeynes@103 | 210 | texcache_get_texture( addr, width, height, poly->texture );
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nkeynes@103 | 211 | textured = TRUE;
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nkeynes@103 | 212 | glEnable( GL_TEXTURE_2D );
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nkeynes@103 | 213 | } else {
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nkeynes@103 | 214 | textured = FALSE;
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nkeynes@103 | 215 | glDisable( GL_TEXTURE_2D );
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nkeynes@103 | 216 | }
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nkeynes@103 | 217 | glBlendFunc( POLY_BLEND_SRC(poly), POLY_BLEND_DEST(poly) );
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nkeynes@103 | 218 | if( poly->command & PVR2_POLY_SPECULAR ) {
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nkeynes@103 | 219 | /* Second block expected */
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nkeynes@103 | 220 | }
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nkeynes@103 | 221 | if( POLY_DEPTH_WRITE(poly) ) {
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nkeynes@103 | 222 | glEnable( GL_DEPTH_TEST );
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nkeynes@103 | 223 | glDepthFunc( POLY_DEPTH_MODE(poly) );
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nkeynes@103 | 224 | } else {
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nkeynes@103 | 225 | glDisable( GL_DEPTH_TEST );
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nkeynes@103 | 226 | }
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nkeynes@103 | 227 |
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nkeynes@103 | 228 | expect_vertexes = POLY_STRIP_VERTEXES( poly );
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nkeynes@103 | 229 | if( expect_vertexes == 3 )
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nkeynes@103 | 230 | glBegin( GL_TRIANGLES );
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nkeynes@103 | 231 | else if( expect_vertexes == 4 )
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nkeynes@103 | 232 | glBegin( GL_QUADS );
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nkeynes@103 | 233 | else
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nkeynes@103 | 234 | glBegin( GL_TRIANGLE_STRIP );
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nkeynes@103 | 235 | break;
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nkeynes@103 | 236 | case PVR2_CMD_VERTEX_LAST:
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nkeynes@103 | 237 | case PVR2_CMD_VERTEX:
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nkeynes@103 | 238 | if( expect_vertexes == 0 ) {
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nkeynes@103 | 239 | ERROR( "Unexpected vertex!" );
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nkeynes@103 | 240 | return;
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nkeynes@103 | 241 | }
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nkeynes@103 | 242 | expect_vertexes--;
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nkeynes@103 | 243 | struct pvr2_vertex_basic *vertex = (struct pvr2_vertex_basic *)cmd_ptr;
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nkeynes@103 | 244 | if( textured ) {
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nkeynes@103 | 245 | glTexCoord2f( vertex->s, vertex->t );
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nkeynes@103 | 246 | }
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nkeynes@103 | 247 | glVertex3f( vertex->x, vertex->y, vertex->z );
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nkeynes@103 | 248 |
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nkeynes@103 | 249 | if( expect_vertexes == 0 )
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nkeynes@103 | 250 | glEnd();
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nkeynes@103 | 251 | break;
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nkeynes@103 | 252 | }
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nkeynes@103 | 253 | cmd_ptr += 8; /* Next record */
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nkeynes@103 | 254 | }
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nkeynes@103 | 255 | }
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nkeynes@103 | 256 |
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nkeynes@103 | 257 | /**
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nkeynes@103 | 258 | * Render a complete scene into the OpenGL back buffer.
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nkeynes@103 | 259 | * Note: this will probably need to be broken up eventually once timings are
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nkeynes@100 | 260 | * determined.
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nkeynes@100 | 261 | */
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nkeynes@103 | 262 | void pvr2_render_scene( )
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nkeynes@100 | 263 | {
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nkeynes@103 | 264 | struct tile_descriptor *tile_desc =
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nkeynes@103 | 265 | (struct tile_descriptor *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, TILEBASE ));
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nkeynes@100 | 266 |
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nkeynes@103 | 267 | uint32_t render_addr = MMIO_READ( PVR2, RENDADDR1 );
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nkeynes@103 | 268 | gboolean render_to_tex;
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nkeynes@103 | 269 | if( render_addr & 0x01000000 ) {
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nkeynes@103 | 270 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE_INT;
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nkeynes@103 | 271 | /* Heuristic - if we're rendering to the interlaced region we're
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nkeynes@103 | 272 | * probably creating a texture rather than rendering actual output.
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nkeynes@103 | 273 | * We can optimise for this case a little
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nkeynes@103 | 274 | */
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nkeynes@103 | 275 | render_to_tex = TRUE;
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nkeynes@103 | 276 | } else {
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nkeynes@103 | 277 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE;
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nkeynes@103 | 278 | render_to_tex = FALSE;
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nkeynes@103 | 279 | }
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nkeynes@103 | 280 | uint32_t render_mode = MMIO_READ( PVR2, RENDMODE );
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nkeynes@103 | 281 | int width = 640; /* FIXME - get this from the tile buffer */
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nkeynes@103 | 282 | int height = 480;
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nkeynes@103 | 283 | int colour_format = pvr2_render_colour_format[render_mode&0x07];
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nkeynes@103 | 284 | pvr2_render_prepare_context( render_addr, width, height, colour_format,
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nkeynes@103 | 285 | render_to_tex );
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nkeynes@103 | 286 |
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nkeynes@103 | 287 | uint32_t *display_list =
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nkeynes@103 | 288 | (uint32_t *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, OBJBASE ));
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nkeynes@103 | 289 | uint32_t display_length = *display_list++;
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nkeynes@103 | 290 |
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nkeynes@103 | 291 | int clip_x = MMIO_READ( PVR2, HCLIP ) & 0x03FF;
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nkeynes@103 | 292 | int clip_y = MMIO_READ( PVR2, VCLIP ) & 0x03FF;
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nkeynes@103 | 293 | int clip_width = ((MMIO_READ( PVR2, HCLIP ) >> 16) & 0x03FF) - clip_x + 1;
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nkeynes@103 | 294 | int clip_height= ((MMIO_READ( PVR2, VCLIP ) >> 16) & 0x03FF) - clip_y + 1;
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nkeynes@103 | 295 |
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nkeynes@103 | 296 | if( clip_x == 0 && clip_y == 0 && clip_width == width && clip_height == height ) {
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nkeynes@103 | 297 | glDisable( GL_SCISSOR_TEST );
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nkeynes@103 | 298 | } else {
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nkeynes@103 | 299 | glEnable( GL_SCISSOR_TEST );
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nkeynes@103 | 300 | glScissor( clip_x, clip_y, clip_width, clip_height );
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nkeynes@103 | 301 | }
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nkeynes@103 | 302 |
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nkeynes@103 | 303 | /* Fog setup goes here */
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nkeynes@103 | 304 |
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nkeynes@103 | 305 | /* Render the display list */
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nkeynes@103 | 306 | pvr2_render_display_list( display_list, display_length );
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nkeynes@103 | 307 |
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nkeynes@103 | 308 | /* Post-render cleanup and update */
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nkeynes@103 | 309 |
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nkeynes@103 | 310 |
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nkeynes@103 | 311 | /* Generate end of render event */
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nkeynes@100 | 312 | asic_event( EVENT_PVR_RENDER_DONE );
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nkeynes@100 | 313 | DEBUG( "Rendered frame %d", pvr2_frame_counter );
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nkeynes@100 | 314 | }
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nkeynes@103 | 315 |
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nkeynes@103 | 316 |
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nkeynes@103 | 317 | /**
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nkeynes@103 | 318 | * Flush the indicated render buffer back to PVR. Caller is responsible for
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nkeynes@103 | 319 | * tracking whether there is actually anything in the buffer.
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nkeynes@103 | 320 | *
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nkeynes@103 | 321 | * @param buffer A render buffer indicating the address to store to, and the
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nkeynes@103 | 322 | * format the data needs to be in.
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nkeynes@103 | 323 | * @param backBuffer TRUE to flush the back buffer, FALSE for
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nkeynes@103 | 324 | * the front buffer.
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nkeynes@103 | 325 | */
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nkeynes@103 | 326 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
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nkeynes@103 | 327 | gboolean backBuffer )
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nkeynes@103 | 328 | {
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nkeynes@103 | 329 | if( buffer->render_addr == -1 )
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nkeynes@103 | 330 | return;
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nkeynes@103 | 331 | GLenum type, format = GL_RGBA;
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nkeynes@103 | 332 | int size = buffer->width * buffer->height;
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nkeynes@103 | 333 |
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nkeynes@103 | 334 | switch( buffer->colour_format ) {
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nkeynes@103 | 335 | case COLFMT_RGB565:
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nkeynes@103 | 336 | type = GL_UNSIGNED_SHORT_5_6_5;
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nkeynes@103 | 337 | format = GL_RGB;
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nkeynes@103 | 338 | size <<= 1;
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nkeynes@103 | 339 | break;
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nkeynes@103 | 340 | case COLFMT_RGB888:
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nkeynes@103 | 341 | type = GL_UNSIGNED_INT;
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nkeynes@103 | 342 | format = GL_RGB;
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nkeynes@103 | 343 | size = (size<<1)+size;
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nkeynes@103 | 344 | break;
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nkeynes@103 | 345 | case COLFMT_ARGB1555:
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nkeynes@103 | 346 | type = GL_UNSIGNED_SHORT_5_5_5_1;
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nkeynes@103 | 347 | size <<= 1;
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nkeynes@103 | 348 | break;
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nkeynes@103 | 349 | case COLFMT_ARGB4444:
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nkeynes@103 | 350 | type = GL_UNSIGNED_SHORT_4_4_4_4;
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nkeynes@103 | 351 | size <<= 1;
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nkeynes@103 | 352 | break;
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nkeynes@103 | 353 | case COLFMT_ARGB8888:
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nkeynes@103 | 354 | type = GL_UNSIGNED_INT_8_8_8_8;
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nkeynes@103 | 355 | size <<= 2;
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nkeynes@103 | 356 | break;
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nkeynes@103 | 357 | }
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nkeynes@103 | 358 |
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nkeynes@103 | 359 | if( backBuffer ) {
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nkeynes@103 | 360 | glFinish();
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nkeynes@103 | 361 | glReadBuffer( GL_BACK );
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nkeynes@103 | 362 | } else {
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nkeynes@103 | 363 | glReadBuffer( GL_FRONT );
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nkeynes@103 | 364 | }
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nkeynes@103 | 365 |
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nkeynes@103 | 366 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
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nkeynes@103 | 367 | /* Interlaced buffer. Go the double copy... :( */
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nkeynes@103 | 368 | char target[size];
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nkeynes@103 | 369 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
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nkeynes@103 | 370 | pvr2_vram64_write( buffer->render_addr, target, size );
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nkeynes@103 | 371 | } else {
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nkeynes@103 | 372 | /* Regular buffer - go direct */
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nkeynes@103 | 373 | char *target = mem_get_region( buffer->render_addr );
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nkeynes@103 | 374 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
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nkeynes@103 | 375 | }
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nkeynes@103 | 376 | }
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nkeynes@103 | 377 |
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nkeynes@103 | 378 |
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nkeynes@103 | 379 | /**
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nkeynes@103 | 380 | * Copy data from PVR ram into the GL render buffer.
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nkeynes@103 | 381 | *
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nkeynes@103 | 382 | * @param buffer A render buffer indicating the address to read from, and the
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nkeynes@103 | 383 | * format the data is in.
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nkeynes@103 | 384 | * @param backBuffer TRUE to write the back buffer, FALSE for
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nkeynes@103 | 385 | * the front buffer.
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nkeynes@103 | 386 | */
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nkeynes@103 | 387 | void pvr2_render_copy_from_sh4( pvr2_render_buffer_t buffer,
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nkeynes@103 | 388 | gboolean backBuffer )
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nkeynes@103 | 389 | {
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nkeynes@103 | 390 | if( buffer->render_addr == -1 )
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nkeynes@103 | 391 | return;
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nkeynes@103 | 392 | GLenum type, format = GL_RGBA;
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nkeynes@103 | 393 | int size = buffer->width * buffer->height;
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nkeynes@103 | 394 |
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nkeynes@103 | 395 | switch( buffer->colour_format ) {
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nkeynes@103 | 396 | case COLFMT_RGB565:
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nkeynes@103 | 397 | type = GL_UNSIGNED_SHORT_5_6_5;
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nkeynes@103 | 398 | format = GL_RGB;
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nkeynes@103 | 399 | size <<= 1;
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nkeynes@103 | 400 | break;
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nkeynes@103 | 401 | case COLFMT_RGB888:
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nkeynes@103 | 402 | type = GL_UNSIGNED_INT;
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nkeynes@103 | 403 | format = GL_RGB;
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nkeynes@103 | 404 | size = (size<<1)+size;
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nkeynes@103 | 405 | break;
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nkeynes@103 | 406 | case COLFMT_ARGB1555:
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nkeynes@103 | 407 | type = GL_UNSIGNED_SHORT_5_5_5_1;
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nkeynes@103 | 408 | size <<= 1;
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nkeynes@103 | 409 | break;
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nkeynes@103 | 410 | case COLFMT_ARGB4444:
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nkeynes@103 | 411 | type = GL_UNSIGNED_SHORT_4_4_4_4;
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nkeynes@103 | 412 | size <<= 1;
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nkeynes@103 | 413 | break;
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nkeynes@103 | 414 | case COLFMT_ARGB8888:
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nkeynes@103 | 415 | type = GL_UNSIGNED_INT_8_8_8_8;
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nkeynes@103 | 416 | size <<= 2;
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nkeynes@103 | 417 | break;
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nkeynes@103 | 418 | }
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nkeynes@103 | 419 |
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nkeynes@103 | 420 | if( backBuffer ) {
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nkeynes@103 | 421 | glDrawBuffer( GL_BACK );
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nkeynes@103 | 422 | } else {
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nkeynes@103 | 423 | glDrawBuffer( GL_FRONT );
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nkeynes@103 | 424 | }
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nkeynes@103 | 425 |
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nkeynes@103 | 426 | glRasterPos2i( 0, 0 );
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nkeynes@103 | 427 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
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nkeynes@103 | 428 | /* Interlaced buffer. Go the double copy... :( */
|
nkeynes@103 | 429 | char target[size];
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nkeynes@103 | 430 | pvr2_vram64_read( target, buffer->render_addr, size );
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nkeynes@103 | 431 | glDrawPixels( buffer->width, buffer->height,
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nkeynes@103 | 432 | format, type, target );
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nkeynes@103 | 433 | } else {
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nkeynes@103 | 434 | /* Regular buffer - go direct */
|
nkeynes@103 | 435 | char *target = mem_get_region( buffer->render_addr );
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nkeynes@103 | 436 | glDrawPixels( buffer->width, buffer->height,
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nkeynes@103 | 437 | format, type, target );
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nkeynes@103 | 438 | }
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nkeynes@103 | 439 | }
|