nkeynes@635 | 1 | /**
|
nkeynes@635 | 2 | * $Id$
|
nkeynes@635 | 3 | *
|
nkeynes@635 | 4 | * Common GL code that doesn't depend on a specific implementation
|
nkeynes@635 | 5 | *
|
nkeynes@635 | 6 | * Copyright (c) 2005 Nathan Keynes.
|
nkeynes@635 | 7 | *
|
nkeynes@635 | 8 | * This program is free software; you can redistribute it and/or modify
|
nkeynes@635 | 9 | * it under the terms of the GNU General Public License as published by
|
nkeynes@635 | 10 | * the Free Software Foundation; either version 2 of the License, or
|
nkeynes@635 | 11 | * (at your option) any later version.
|
nkeynes@635 | 12 | *
|
nkeynes@635 | 13 | * This program is distributed in the hope that it will be useful,
|
nkeynes@635 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
nkeynes@635 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
nkeynes@635 | 16 | * GNU General Public License for more details.
|
nkeynes@635 | 17 | */
|
nkeynes@635 | 18 |
|
nkeynes@1282 | 19 | #include <assert.h>
|
nkeynes@635 | 20 | #include <sys/time.h>
|
nkeynes@635 | 21 |
|
nkeynes@635 | 22 | #include "display.h"
|
nkeynes@635 | 23 | #include "pvr2/pvr2.h"
|
nkeynes@1236 | 24 | #include "pvr2/glutil.h"
|
nkeynes@1240 | 25 | #include "pvr2/shaders.h"
|
nkeynes@635 | 26 | #include "drivers/video_gl.h"
|
nkeynes@635 | 27 |
|
nkeynes@1236 | 28 | uint32_t video_width, video_height;
|
nkeynes@1236 | 29 | struct video_vertex {
|
nkeynes@1236 | 30 | float x,y;
|
nkeynes@1236 | 31 | float u,v;
|
nkeynes@1240 | 32 | float r,g,b,a;
|
nkeynes@1236 | 33 | };
|
nkeynes@1236 | 34 |
|
nkeynes@1236 | 35 | static struct video_box_t {
|
nkeynes@1236 | 36 | float viewMatrix[16];
|
nkeynes@1236 | 37 | struct video_vertex gap1[4];
|
nkeynes@1236 | 38 | struct video_vertex gap2[4];
|
nkeynes@1236 | 39 | struct video_vertex video_view[4];
|
nkeynes@1236 | 40 | struct video_vertex invert_view[4];
|
nkeynes@1236 | 41 | } video_box;
|
nkeynes@1236 | 42 |
|
nkeynes@1251 | 43 | void gl_set_video_size( uint32_t width, uint32_t height, int flipped )
|
nkeynes@1236 | 44 | {
|
nkeynes@1236 | 45 | video_width = width;
|
nkeynes@1236 | 46 | video_height = height;
|
nkeynes@1236 | 47 |
|
nkeynes@1236 | 48 | int x1=0,y1=0,x2=video_width,y2=video_height;
|
nkeynes@1251 | 49 | int top = 0, bottom = 1;
|
nkeynes@1251 | 50 |
|
nkeynes@1251 | 51 | if( flipped ) {
|
nkeynes@1251 | 52 | top = 1;
|
nkeynes@1251 | 53 | bottom = 0;
|
nkeynes@1251 | 54 | }
|
nkeynes@1236 | 55 |
|
nkeynes@1236 | 56 | int ah = video_width * 0.75;
|
nkeynes@1236 | 57 |
|
nkeynes@1236 | 58 | if( ah > video_height ) {
|
nkeynes@1236 | 59 | int w = (video_height/0.75);
|
nkeynes@1236 | 60 | x1 = (video_width - w)/2;
|
nkeynes@1236 | 61 | x2 -= x1;
|
nkeynes@1236 | 62 | video_box.gap1[0].x = 0; video_box.gap1[0].y = 0;
|
nkeynes@1236 | 63 | video_box.gap1[1].x = x1; video_box.gap1[1].y = 0;
|
nkeynes@1262 | 64 | video_box.gap1[2].x = x1; video_box.gap1[2].y = video_height;
|
nkeynes@1259 | 65 | video_box.gap1[3].x = 0; video_box.gap1[3].y = video_height;
|
nkeynes@1236 | 66 | video_box.gap2[0].x = x2; video_box.gap2[0].y = 0;
|
nkeynes@1236 | 67 | video_box.gap2[1].x = video_width; video_box.gap2[1].y = 0;
|
nkeynes@1259 | 68 | video_box.gap2[2].x = video_width; video_box.gap2[2].y = video_height;
|
nkeynes@1259 | 69 | video_box.gap2[3].x = x2; video_box.gap2[3].y = video_height;
|
nkeynes@1236 | 70 | } else if( ah < video_height ) {
|
nkeynes@1236 | 71 | y1 = (video_height - ah)/2;
|
nkeynes@1236 | 72 | y2 -= y1;
|
nkeynes@1236 | 73 |
|
nkeynes@1236 | 74 | video_box.gap1[0].x = 0; video_box.gap1[0].y = 0;
|
nkeynes@1236 | 75 | video_box.gap1[1].x = video_width; video_box.gap1[1].y = 0;
|
nkeynes@1259 | 76 | video_box.gap1[2].x = video_width; video_box.gap1[2].y = y1;
|
nkeynes@1259 | 77 | video_box.gap1[3].x = 0; video_box.gap1[3].y = y1;
|
nkeynes@1236 | 78 | video_box.gap2[0].x = 0; video_box.gap2[0].y = y2;
|
nkeynes@1236 | 79 | video_box.gap2[1].x = video_width; video_box.gap2[1].y = y2;
|
nkeynes@1259 | 80 | video_box.gap2[2].x = video_width; video_box.gap2[2].y = video_height;
|
nkeynes@1259 | 81 | video_box.gap2[3].x = 0; video_box.gap2[3].y = video_height;
|
nkeynes@1236 | 82 | }
|
nkeynes@1236 | 83 |
|
nkeynes@1236 | 84 | video_box.video_view[0].x = x1; video_box.video_view[0].y = y1;
|
nkeynes@1259 | 85 | video_box.video_view[0].u = 0; video_box.video_view[0].v = top;
|
nkeynes@1236 | 86 | video_box.video_view[1].x = x2; video_box.video_view[1].y = y1;
|
nkeynes@1259 | 87 | video_box.video_view[1].u = 1; video_box.video_view[1].v = top;
|
nkeynes@1259 | 88 | video_box.video_view[2].x = x2; video_box.video_view[2].y = y2;
|
nkeynes@1259 | 89 | video_box.video_view[2].u = 1; video_box.video_view[2].v = bottom;
|
nkeynes@1259 | 90 | video_box.video_view[3].x = x1; video_box.video_view[3].y = y2;
|
nkeynes@1259 | 91 | video_box.video_view[3].u = 0; video_box.video_view[3].v = bottom;
|
nkeynes@1236 | 92 |
|
nkeynes@1236 | 93 | memcpy( &video_box.invert_view, &video_box.video_view, sizeof(video_box.video_view) );
|
nkeynes@1251 | 94 | video_box.invert_view[0].v = bottom; video_box.invert_view[1].v = bottom;
|
nkeynes@1251 | 95 | video_box.invert_view[2].v = top; video_box.invert_view[3].v = top;
|
nkeynes@1236 | 96 |
|
nkeynes@1236 | 97 | defineOrthoMatrix(video_box.viewMatrix, video_width, video_height, 0, 65535);
|
nkeynes@1236 | 98 | }
|
nkeynes@635 | 99 |
|
nkeynes@1239 | 100 | #ifdef HAVE_OPENGL_FIXEDFUNC
|
nkeynes@635 | 101 | /**
|
nkeynes@1236 | 102 | * Setup the gl context for writes to the display output.
|
nkeynes@635 | 103 | */
|
nkeynes@1246 | 104 | void gl_framebuffer_setup()
|
nkeynes@635 | 105 | {
|
nkeynes@1239 | 106 | glViewport( 0, 0, video_width, video_height );
|
nkeynes@1236 | 107 | glLoadMatrixf(video_box.viewMatrix);
|
nkeynes@1236 | 108 | glBlendFunc( GL_ONE, GL_ZERO );
|
nkeynes@1236 | 109 | glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
|
nkeynes@1236 | 110 | glVertexPointer(2, GL_FLOAT, sizeof(struct video_vertex), &video_box.gap1[0].x);
|
nkeynes@1236 | 111 | glColorPointer(3, GL_FLOAT, sizeof(struct video_vertex), &video_box.gap1[0].r);
|
nkeynes@1236 | 112 | glTexCoordPointer(2, GL_FLOAT, sizeof(struct video_vertex), &video_box.gap1[0].u);
|
nkeynes@1236 | 113 | glEnableClientState( GL_VERTEX_ARRAY );
|
nkeynes@1236 | 114 | glEnableClientState( GL_COLOR_ARRAY );
|
nkeynes@1236 | 115 | glEnableClientState( GL_TEXTURE_COORD_ARRAY );
|
nkeynes@635 | 116 | }
|
nkeynes@635 | 117 |
|
nkeynes@1246 | 118 | void gl_framebuffer_cleanup()
|
nkeynes@1240 | 119 | {
|
nkeynes@1240 | 120 | glDisableClientState( GL_VERTEX_ARRAY );
|
nkeynes@1240 | 121 | glDisableClientState( GL_COLOR_ARRAY );
|
nkeynes@1240 | 122 | glDisableClientState( GL_TEXTURE_COORD_ARRAY );
|
nkeynes@1240 | 123 | }
|
nkeynes@1239 | 124 | #else
|
nkeynes@1246 | 125 | void gl_framebuffer_setup()
|
nkeynes@1239 | 126 | {
|
nkeynes@1240 | 127 | glViewport( 0, 0, video_width, video_height );
|
nkeynes@1240 | 128 | glBlendFunc( GL_ONE, GL_ZERO );
|
nkeynes@1240 | 129 | glsl_use_basic_shader();
|
nkeynes@1240 | 130 | glsl_set_basic_shader_view_matrix(video_box.viewMatrix);
|
nkeynes@1240 | 131 | glsl_set_basic_shader_in_vertex_pointer(&video_box.gap1[0].x, sizeof(struct video_vertex));
|
nkeynes@1240 | 132 | glsl_set_basic_shader_in_colour_pointer(&video_box.gap1[0].r, sizeof(struct video_vertex));
|
nkeynes@1240 | 133 | glsl_set_basic_shader_in_texcoord_pointer(&video_box.gap1[0].u, sizeof(struct video_vertex));
|
nkeynes@1240 | 134 | glsl_set_basic_shader_primary_texture(0);
|
nkeynes@1240 | 135 | }
|
nkeynes@1240 | 136 |
|
nkeynes@1246 | 137 | void gl_framebuffer_cleanup()
|
nkeynes@1240 | 138 | {
|
nkeynes@1240 | 139 | glsl_clear_shader();
|
nkeynes@1239 | 140 | }
|
nkeynes@1239 | 141 | #endif
|
nkeynes@1239 | 142 |
|
nkeynes@635 | 143 | void gl_display_render_buffer( render_buffer_t buffer )
|
nkeynes@635 | 144 | {
|
nkeynes@635 | 145 | gl_texture_window( buffer->width, buffer->height, buffer->buf_id, buffer->inverted );
|
nkeynes@635 | 146 | }
|
nkeynes@635 | 147 |
|
nkeynes@854 | 148 | /**
|
nkeynes@854 | 149 | * Convert window coordinates to dreamcast device coords (640x480) using the
|
nkeynes@854 | 150 | * same viewable area as gl_texture_window.
|
nkeynes@854 | 151 | * If the coordinates are outside the viewable area, the result is -1,-1.
|
nkeynes@854 | 152 | */
|
nkeynes@854 | 153 | void gl_window_to_system_coords( int *x, int *y )
|
nkeynes@854 | 154 | {
|
nkeynes@854 | 155 | int x1=0,y1=0,x2=video_width,y2=video_height;
|
nkeynes@854 | 156 |
|
nkeynes@854 | 157 | int ah = video_width * 0.75;
|
nkeynes@854 | 158 |
|
nkeynes@854 | 159 | if( ah > video_height ) {
|
nkeynes@854 | 160 | int w = (video_height/0.75);
|
nkeynes@854 | 161 | x1 = (video_width - w)/2;
|
nkeynes@854 | 162 | x2 -= x1;
|
nkeynes@854 | 163 | } else if( ah < video_height ) {
|
nkeynes@854 | 164 | y1 = (video_height - ah)/2;
|
nkeynes@854 | 165 | y2 -= y1;
|
nkeynes@854 | 166 | }
|
nkeynes@854 | 167 | if( *x < x1 || *x >= x2 || *y < y1 || *y >= y2 ) {
|
nkeynes@854 | 168 | *x = -1;
|
nkeynes@854 | 169 | *y = -1;
|
nkeynes@854 | 170 | } else {
|
nkeynes@854 | 171 | *x = (*x - x1) * DISPLAY_WIDTH / (x2-x1);
|
nkeynes@854 | 172 | *y = (*y - y1) * DISPLAY_HEIGHT / (y2-y1);
|
nkeynes@854 | 173 | }
|
nkeynes@854 | 174 | }
|
nkeynes@854 | 175 |
|
nkeynes@1259 | 176 | /**
|
nkeynes@1259 | 177 | * Use quads if we have them, otherwise tri-fans.
|
nkeynes@1259 | 178 | */
|
nkeynes@1259 | 179 | #ifndef GL_QUADS
|
nkeynes@1260 | 180 | #define GL_QUADS GL_TRIANGLE_FAN
|
nkeynes@1259 | 181 | #endif
|
nkeynes@1259 | 182 |
|
nkeynes@635 | 183 | void gl_texture_window( int width, int height, int tex_id, gboolean inverted )
|
nkeynes@635 | 184 | {
|
nkeynes@1240 | 185 | /* Set video box tex alpha to 1 */
|
nkeynes@1240 | 186 | video_box.video_view[0].a = video_box.video_view[1].a = video_box.video_view[2].a = video_box.video_view[3].a = 1;
|
nkeynes@1251 | 187 | video_box.invert_view[0].a = video_box.invert_view[1].a = video_box.invert_view[2].a = video_box.invert_view[3].a = 1;
|
nkeynes@1240 | 188 |
|
nkeynes@635 | 189 | /* Reset display parameters */
|
nkeynes@1236 | 190 | gl_framebuffer_setup();
|
nkeynes@1259 | 191 | glDrawArrays(GL_QUADS, 0, 4);
|
nkeynes@1259 | 192 | glDrawArrays(GL_QUADS, 4, 4);
|
nkeynes@1236 | 193 | glEnable(GL_TEXTURE_2D);
|
nkeynes@1236 | 194 | glBindTexture(GL_TEXTURE_2D,tex_id);
|
nkeynes@1222 | 195 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
nkeynes@1222 | 196 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
nkeynes@1259 | 197 | glDrawArrays(GL_QUADS, inverted ? 12 : 8, 4);
|
nkeynes@1236 | 198 | glDisable(GL_TEXTURE_2D);
|
nkeynes@1251 | 199 | gl_framebuffer_cleanup();
|
nkeynes@635 | 200 | glFlush();
|
nkeynes@635 | 201 | }
|
nkeynes@635 | 202 |
|
nkeynes@669 | 203 | void gl_display_blank( uint32_t colour )
|
nkeynes@635 | 204 | {
|
nkeynes@1236 | 205 | /* Set the video_box background colour */
|
nkeynes@1236 | 206 | video_box.video_view[0].r = ((float)(((colour >> 16) & 0xFF) + 1)) / 256.0;
|
nkeynes@1236 | 207 | video_box.video_view[0].g = ((float)(((colour >> 8) & 0xFF) + 1)) / 256.0;
|
nkeynes@1236 | 208 | video_box.video_view[0].b = ((float)((colour & 0xFF) + 1)) / 256.0;
|
nkeynes@1240 | 209 | video_box.video_view[0].a = 0;
|
nkeynes@1236 | 210 | memcpy( &video_box.video_view[1].r, &video_box.video_view[0].r, sizeof(float)*3 );
|
nkeynes@1236 | 211 | memcpy( &video_box.video_view[2].r, &video_box.video_view[0].r, sizeof(float)*3 );
|
nkeynes@1236 | 212 | memcpy( &video_box.video_view[3].r, &video_box.video_view[0].r, sizeof(float)*3 );
|
nkeynes@1236 | 213 |
|
nkeynes@1236 | 214 | /* And render */
|
nkeynes@1236 | 215 | gl_framebuffer_setup();
|
nkeynes@1259 | 216 | glDrawArrays(GL_QUADS, 0, 4);
|
nkeynes@1259 | 217 | glDrawArrays(GL_QUADS, 4, 4);
|
nkeynes@1259 | 218 | glDrawArrays(GL_QUADS, 8, 4);
|
nkeynes@1251 | 219 | gl_framebuffer_cleanup();
|
nkeynes@635 | 220 | glFlush();
|
nkeynes@635 | 221 | }
|
nkeynes@635 | 222 |
|
nkeynes@1282 | 223 |
|
nkeynes@1282 | 224 | #ifdef HAVE_GLES2
|
nkeynes@1282 | 225 | /* Note: OpenGL ES only officialy supports glReadPixels for the RGBA32 format
|
nkeynes@1282 | 226 | * (and doesn't necessarily support glPixelStore(GL_PACK_ROW_LENGTH) either.
|
nkeynes@1282 | 227 | * As a result, we end up needed to do the format conversion ourselves.
|
nkeynes@1282 | 228 | */
|
nkeynes@1282 | 229 |
|
nkeynes@1282 | 230 | /**
|
nkeynes@1282 | 231 | * Swizzle 32-bit RGBA to specified target format, truncating components where
|
nkeynes@1282 | 232 | * necessary. Target may == source.
|
nkeynes@1282 | 233 | * @param target destination buffer
|
nkeynes@1282 | 234 | * @param Source buffer, which must be in 8-bit-per-component RGBA format, fully packed.
|
nkeynes@1282 | 235 | * @param width width of image in pixels
|
nkeynes@1282 | 236 | * @param height height of image in pixels
|
nkeynes@1282 | 237 | * @param target_stride Stride of target buffer, in bytes
|
nkeynes@1282 | 238 | * @param colour_format
|
nkeynes@1282 | 239 | */
|
nkeynes@1282 | 240 | static void rgba32_to_target( unsigned char *target, const uint32_t *source, int width, int height, int target_stride, int colour_format )
|
nkeynes@1282 | 241 | {
|
nkeynes@1282 | 242 | int x,y;
|
nkeynes@1282 | 243 |
|
nkeynes@1282 | 244 | if( target_stride == 0 )
|
nkeynes@1282 | 245 | target_stride = width * colour_formats[colour_format].bpp;
|
nkeynes@1282 | 246 |
|
nkeynes@1282 | 247 | switch( colour_format ) {
|
nkeynes@1282 | 248 | case COLFMT_BGRA1555:
|
nkeynes@1282 | 249 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 250 | uint16_t *d = (uint16_t *)target;
|
nkeynes@1282 | 251 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 252 | uint32_t v = *source++;
|
nkeynes@1282 | 253 | *d++ = (uint16_t)( ((v & 0x80000000) >> 16) | ((v & 0x00F80000) >> 19) |
|
nkeynes@1282 | 254 | ((v & 0x0000F800)>>6) | ((v & 0x000000F8) << 7) );
|
nkeynes@1282 | 255 | }
|
nkeynes@1282 | 256 | target += target_stride;
|
nkeynes@1282 | 257 | }
|
nkeynes@1282 | 258 | break;
|
nkeynes@1282 | 259 | case COLFMT_RGB565:
|
nkeynes@1282 | 260 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 261 | uint16_t *d = (uint16_t *)target;
|
nkeynes@1282 | 262 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 263 | uint32_t v = *source++;
|
nkeynes@1282 | 264 | *d++ = (uint16_t)( ((v & 0x00F80000) >> 19) | ((v & 0x0000FC00) >> 5) | ((v & 0x000000F8)<<8) );
|
nkeynes@1282 | 265 | }
|
nkeynes@1282 | 266 | target += target_stride;
|
nkeynes@1282 | 267 | }
|
nkeynes@1282 | 268 | break;
|
nkeynes@1282 | 269 | case COLFMT_BGRA4444:
|
nkeynes@1282 | 270 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 271 | uint16_t *d = (uint16_t *)target;
|
nkeynes@1282 | 272 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 273 | uint32_t v = *source++;
|
nkeynes@1282 | 274 | *d++ = (uint16_t)( ((v & 0xF0000000) >> 16) | ((v & 0x00F00000) >> 20) |
|
nkeynes@1282 | 275 | ((v & 0x0000F000) >> 8) | ((v & 0x000000F0)<<4) );
|
nkeynes@1282 | 276 | }
|
nkeynes@1282 | 277 | target += target_stride;
|
nkeynes@1282 | 278 | }
|
nkeynes@1282 | 279 | break;
|
nkeynes@1282 | 280 | case COLFMT_BGRA8888:
|
nkeynes@1282 | 281 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 282 | uint32_t *d = (uint32_t *)target;
|
nkeynes@1282 | 283 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 284 | uint32_t v = *source++;
|
nkeynes@1282 | 285 | *d++ = (v & 0xFF00FF00) | ((v & 0x00FF0000) >> 16) | ((v & 0x000000FF)<<16);
|
nkeynes@1282 | 286 | }
|
nkeynes@1282 | 287 | target += target_stride;
|
nkeynes@1282 | 288 | }
|
nkeynes@1282 | 289 | break;
|
nkeynes@1282 | 290 | case COLFMT_BGR0888:
|
nkeynes@1282 | 291 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 292 | uint32_t *d = (uint32_t *)target;
|
nkeynes@1282 | 293 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 294 | uint32_t v = *source++;
|
nkeynes@1282 | 295 | *d++ = ((v & 0x00FF0000) >> 16) | (v & 0x0000FF00) | ((v & 0x000000FF)<<16);
|
nkeynes@1282 | 296 | }
|
nkeynes@1282 | 297 | target += target_stride;
|
nkeynes@1282 | 298 | }
|
nkeynes@1282 | 299 | break;
|
nkeynes@1282 | 300 | case COLFMT_BGR888:
|
nkeynes@1282 | 301 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 302 | uint8_t *d = (uint8_t *)target;
|
nkeynes@1282 | 303 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 304 | uint32_t v = *source++;
|
nkeynes@1282 | 305 | *d++ = (uint8_t)(v >> 16);
|
nkeynes@1282 | 306 | *d++ = (uint8_t)(v >> 8);
|
nkeynes@1282 | 307 | *d++ = (uint8_t)(v);
|
nkeynes@1282 | 308 | }
|
nkeynes@1282 | 309 | target += target_stride;
|
nkeynes@1282 | 310 | }
|
nkeynes@1282 | 311 | break;
|
nkeynes@1282 | 312 | case COLFMT_RGB888:
|
nkeynes@1282 | 313 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 314 | uint8_t *d = (uint8_t *)target;
|
nkeynes@1282 | 315 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 316 | uint32_t v = *source++;
|
nkeynes@1282 | 317 | *d++ = (uint8_t)(v);
|
nkeynes@1282 | 318 | *d++ = (uint8_t)(v >> 8);
|
nkeynes@1282 | 319 | *d++ = (uint8_t)(v >> 16);
|
nkeynes@1282 | 320 | }
|
nkeynes@1282 | 321 | target += target_stride;
|
nkeynes@1282 | 322 | }
|
nkeynes@1282 | 323 | break;
|
nkeynes@1282 | 324 | default:
|
nkeynes@1282 | 325 | assert( 0 && "Unsupported colour format" );
|
nkeynes@1282 | 326 | }
|
nkeynes@1282 | 327 | }
|
nkeynes@1282 | 328 |
|
nkeynes@1282 | 329 | /**
|
nkeynes@1282 | 330 | * Convert data into an acceptable form for loading into an RGBA texture.
|
nkeynes@1282 | 331 | */
|
nkeynes@1282 | 332 | static int target_to_rgba( uint32_t *target, const unsigned char *source, int width, int height, int source_stride, int colour_format )
|
nkeynes@1282 | 333 | {
|
nkeynes@1282 | 334 | int x,y;
|
nkeynes@1282 | 335 | uint16_t *d;
|
nkeynes@1282 | 336 | switch( colour_format ) {
|
nkeynes@1282 | 337 | case COLFMT_BGRA1555:
|
nkeynes@1282 | 338 | d = (uint16_t *)target;
|
nkeynes@1282 | 339 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 340 | uint16_t *s = (uint16_t *)source;
|
nkeynes@1282 | 341 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 342 | uint16_t v = *s++;
|
nkeynes@1282 | 343 | *d++ = (v >> 15) | (v<<1);
|
nkeynes@1282 | 344 | }
|
nkeynes@1282 | 345 | source += source_stride;
|
nkeynes@1282 | 346 | }
|
nkeynes@1282 | 347 | return GL_UNSIGNED_SHORT_5_5_5_1;
|
nkeynes@1282 | 348 | break;
|
nkeynes@1282 | 349 | case COLFMT_RGB565:
|
nkeynes@1282 | 350 | /* Need to expand to RGBA32 in order to have room for an alpha component */
|
nkeynes@1282 | 351 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 352 | uint16_t *s = (uint16_t *)source;
|
nkeynes@1282 | 353 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 354 | uint32_t v = (uint32_t)*s++;
|
nkeynes@1282 | 355 | *target++ = ((v & 0xF800)>>8) | ((v & 0x07E0) <<5) | ((v & 0x001F) << 19) |
|
nkeynes@1282 | 356 | ((v & 0xE000) >> 13) | ((v &0x0600) >> 1) | ((v & 0x001C) << 14);
|
nkeynes@1282 | 357 | }
|
nkeynes@1282 | 358 | source += source_stride;
|
nkeynes@1282 | 359 | }
|
nkeynes@1282 | 360 | return GL_UNSIGNED_BYTE;
|
nkeynes@1282 | 361 | case COLFMT_BGRA4444:
|
nkeynes@1282 | 362 | d = (uint16_t *)target;
|
nkeynes@1282 | 363 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 364 | uint16_t *s = (uint16_t *)source;
|
nkeynes@1282 | 365 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 366 | uint16_t v = *s++;
|
nkeynes@1282 | 367 | *d++ = (v >> 12) | (v<<4);
|
nkeynes@1282 | 368 | }
|
nkeynes@1282 | 369 | source += source_stride;
|
nkeynes@1282 | 370 | }
|
nkeynes@1282 | 371 | return GL_UNSIGNED_SHORT_4_4_4_4;
|
nkeynes@1282 | 372 | case COLFMT_RGB888:
|
nkeynes@1282 | 373 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 374 | uint8_t *s = (uint8_t *)source;
|
nkeynes@1282 | 375 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 376 | *target++ = s[0] | (s[1]<<8) | (s[2]<<16);
|
nkeynes@1282 | 377 | s += 3;
|
nkeynes@1282 | 378 | }
|
nkeynes@1282 | 379 | source += source_stride;
|
nkeynes@1282 | 380 | }
|
nkeynes@1282 | 381 | return GL_UNSIGNED_BYTE;
|
nkeynes@1282 | 382 | case COLFMT_BGRA8888:
|
nkeynes@1282 | 383 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 384 | uint32_t *s = (uint32_t *)source;
|
nkeynes@1282 | 385 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 386 | uint32_t v = (uint32_t)*s++;
|
nkeynes@1282 | 387 | *target++ = (v & 0xFF00FF00) | ((v & 0x00FF0000) >> 16) | ((v & 0x000000FF) << 16);
|
nkeynes@1282 | 388 | }
|
nkeynes@1282 | 389 | source += source_stride;
|
nkeynes@1282 | 390 | }
|
nkeynes@1282 | 391 | return GL_UNSIGNED_BYTE;
|
nkeynes@1282 | 392 | case COLFMT_BGR0888:
|
nkeynes@1282 | 393 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 394 | uint32_t *s = (uint32_t *)source;
|
nkeynes@1282 | 395 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 396 | uint32_t v = (uint32_t)*s++;
|
nkeynes@1282 | 397 | *target++ = (v & 0x0000FF00) | ((v & 0x00FF0000) >> 16) | ((v & 0x000000FF) << 16);
|
nkeynes@1282 | 398 | }
|
nkeynes@1282 | 399 | source += source_stride;
|
nkeynes@1282 | 400 | }
|
nkeynes@1282 | 401 | return GL_UNSIGNED_BYTE;
|
nkeynes@1282 | 402 | case COLFMT_BGR888:
|
nkeynes@1282 | 403 | for( y=0; y<height; y++ ) {
|
nkeynes@1282 | 404 | uint8_t *s = (uint8_t *)source;
|
nkeynes@1282 | 405 | for( x=0; x<width; x++ ) {
|
nkeynes@1282 | 406 | *target++ = s[2] | (s[1]<<8) | (s[0]<<16);
|
nkeynes@1282 | 407 | s += 3;
|
nkeynes@1282 | 408 | }
|
nkeynes@1282 | 409 | source += source_stride;
|
nkeynes@1282 | 410 | }
|
nkeynes@1282 | 411 | return GL_UNSIGNED_BYTE;
|
nkeynes@1282 | 412 | default:
|
nkeynes@1282 | 413 | assert( 0 && "Unsupported colour format" );
|
nkeynes@1282 | 414 | }
|
nkeynes@1282 | 415 |
|
nkeynes@1282 | 416 |
|
nkeynes@1282 | 417 | }
|
nkeynes@1282 | 418 |
|
nkeynes@1282 | 419 |
|
nkeynes@1282 | 420 | gboolean gl_read_render_buffer( unsigned char *target, render_buffer_t buffer,
|
nkeynes@1282 | 421 | int rowstride, int colour_format )
|
nkeynes@1282 | 422 | {
|
nkeynes@1282 | 423 | if( colour_formats[colour_format].bpp == 4 && (rowstride == 0 || rowstride == buffer->width*4) ) {
|
nkeynes@1282 | 424 | glReadPixels( 0, 0, buffer->width, buffer->height, GL_RGBA, GL_UNSIGNED_BYTE, target );
|
nkeynes@1282 | 425 | rgba32_to_target( target, (uint32_t *)target, buffer->width, buffer->height, rowstride, colour_format );
|
nkeynes@1282 | 426 | } else {
|
nkeynes@1282 | 427 | int size = buffer->width * buffer->height;
|
nkeynes@1282 | 428 | uint32_t tmp[size];
|
nkeynes@1282 | 429 |
|
nkeynes@1282 | 430 | glReadPixels( 0, 0, buffer->width, buffer->height, GL_RGBA, GL_UNSIGNED_BYTE, tmp );
|
nkeynes@1282 | 431 | rgba32_to_target( target, tmp, buffer->width, buffer->height, rowstride, colour_format );
|
nkeynes@1282 | 432 | }
|
nkeynes@1282 | 433 | return TRUE;
|
nkeynes@1282 | 434 | }
|
nkeynes@1282 | 435 |
|
nkeynes@1298 | 436 | void gl_frame_buffer_to_tex( frame_buffer_t frame, int tex_id )
|
nkeynes@1282 | 437 | {
|
nkeynes@1282 | 438 | int size = frame->width * frame->height;
|
nkeynes@1282 | 439 | uint32_t tmp[size];
|
nkeynes@1282 | 440 |
|
nkeynes@1282 | 441 | GLenum type = target_to_rgba( tmp, frame->data, frame->width, frame->height, frame->rowstride, frame->colour_format );
|
nkeynes@1282 | 442 | glBindTexture( GL_TEXTURE_2D, tex_id );
|
nkeynes@1282 | 443 | glTexSubImage2D( GL_TEXTURE_2D, 0, 0,0, frame->width, frame->height, GL_RGBA, type, tmp );
|
nkeynes@1299 | 444 | gl_check_error("gl_frame_buffer_to_tex:glTexSubImage2DBGRA");
|
nkeynes@1282 | 445 | }
|
nkeynes@1282 | 446 |
|
nkeynes@1282 | 447 | #else
|
nkeynes@635 | 448 | /**
|
nkeynes@635 | 449 | * Generic GL read_render_buffer. This function assumes that the caller
|
nkeynes@635 | 450 | * has already set the appropriate glReadBuffer(); in other words, unless
|
nkeynes@635 | 451 | * there's only one buffer this needs to be wrapped.
|
nkeynes@635 | 452 | */
|
nkeynes@635 | 453 | gboolean gl_read_render_buffer( unsigned char *target, render_buffer_t buffer,
|
nkeynes@736 | 454 | int rowstride, int colour_format )
|
nkeynes@635 | 455 | {
|
nkeynes@635 | 456 | glFinish();
|
nkeynes@635 | 457 | GLenum type = colour_formats[colour_format].type;
|
nkeynes@635 | 458 | GLenum format = colour_formats[colour_format].format;
|
nkeynes@635 | 459 | // int line_size = buffer->width * colour_formats[colour_format].bpp;
|
nkeynes@635 | 460 | // int size = line_size * buffer->height;
|
nkeynes@635 | 461 | int glrowstride = (rowstride / colour_formats[colour_format].bpp) - buffer->width;
|
nkeynes@635 | 462 | glPixelStorei( GL_PACK_ROW_LENGTH, glrowstride );
|
nkeynes@635 | 463 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
|
nkeynes@1236 | 464 | glPixelStorei( GL_PACK_ROW_LENGTH, 0 );
|
nkeynes@635 | 465 | return TRUE;
|
nkeynes@635 | 466 | }
|
nkeynes@1244 | 467 |
|
nkeynes@1298 | 468 | void gl_frame_buffer_to_tex( frame_buffer_t frame, int tex_id )
|
nkeynes@1282 | 469 | {
|
nkeynes@1282 | 470 | GLenum type = colour_formats[frame->colour_format].type;
|
nkeynes@1282 | 471 | GLenum format = colour_formats[frame->colour_format].format;
|
nkeynes@1282 | 472 | int bpp = colour_formats[frame->colour_format].bpp;
|
nkeynes@1282 | 473 | int rowstride = (frame->rowstride / bpp) - frame->width;
|
nkeynes@1282 | 474 |
|
nkeynes@1282 | 475 | glPixelStorei( GL_UNPACK_ROW_LENGTH, rowstride );
|
nkeynes@1282 | 476 | glBindTexture( GL_TEXTURE_2D, tex_id );
|
nkeynes@1282 | 477 | glTexSubImage2DBGRA( 0, 0,0,
|
nkeynes@1282 | 478 | frame->width, frame->height, format, type, frame->data, FALSE );
|
nkeynes@1282 | 479 | glPixelStorei( GL_UNPACK_ROW_LENGTH, 0 );
|
nkeynes@1282 | 480 | }
|
nkeynes@1282 | 481 | #endif
|
nkeynes@1282 | 482 |
|
nkeynes@1299 | 483 | void gl_load_frame_buffer( frame_buffer_t frame, render_buffer_t render )
|
nkeynes@1298 | 484 | {
|
nkeynes@1298 | 485 | gl_frame_buffer_to_tex( frame, render->tex_id );
|
nkeynes@1298 | 486 | }
|
nkeynes@1298 | 487 |
|
nkeynes@1282 | 488 |
|
nkeynes@1258 | 489 | gboolean gl_init_driver( display_driver_t driver, gboolean need_fbo )
|
nkeynes@1258 | 490 | {
|
nkeynes@1258 | 491 | /* Use framebuffer objects if available */
|
nkeynes@1258 | 492 | if( gl_fbo_is_supported() ) {
|
nkeynes@1258 | 493 | gl_fbo_init(driver);
|
nkeynes@1258 | 494 | } else if( need_fbo ) {
|
nkeynes@1258 | 495 | ERROR( "Framebuffer objects not supported - unable to construct an off-screen buffer" );
|
nkeynes@1258 | 496 | return FALSE;
|
nkeynes@1258 | 497 | }
|
nkeynes@1258 | 498 |
|
nkeynes@1258 | 499 | /* Use SL shaders if available */
|
nkeynes@1298 | 500 | glsl_init(driver);
|
nkeynes@1258 | 501 | #ifndef HAVE_OPENGL_FIXEDFUNC
|
nkeynes@1298 | 502 | if( !driver->has_sl ) { /* Shaders are required if we don't have fixed-functionality */
|
nkeynes@1258 | 503 | gl_fbo_shutdown();
|
nkeynes@1258 | 504 | return FALSE;
|
nkeynes@1258 | 505 | }
|
nkeynes@1258 | 506 | #endif
|
nkeynes@1258 | 507 |
|
nkeynes@1258 | 508 | /* Use vertex arrays, VBOs, etc, if we have them */
|
nkeynes@1258 | 509 | gl_vbo_init(driver);
|
nkeynes@1258 | 510 |
|
nkeynes@1258 | 511 | driver->capabilities.has_gl = TRUE;
|
nkeynes@1282 | 512 | driver->capabilities.has_bgra = isGLBGRATextureSupported();
|
nkeynes@1258 | 513 | return TRUE;
|
nkeynes@1258 | 514 | }
|
nkeynes@1258 | 515 |
|
nkeynes@1244 | 516 | static gboolean video_gl_init();
|
nkeynes@1244 | 517 |
|
nkeynes@1244 | 518 | /**
|
nkeynes@1244 | 519 | * Minimal GL driver (assuming that the GL context is already set up externally)
|
nkeynes@1244 | 520 | * This requires FBO support (since otherwise we have no way to get a render buffer)
|
nkeynes@1244 | 521 | */
|
nkeynes@1244 | 522 | struct display_driver display_gl_driver = {
|
nkeynes@1244 | 523 | "gl", N_("OpenGL driver"), video_gl_init, NULL,
|
nkeynes@1244 | 524 | NULL, NULL, NULL,
|
nkeynes@1244 | 525 | NULL, NULL, NULL, NULL,
|
nkeynes@1244 | 526 | gl_load_frame_buffer, gl_display_render_buffer, gl_display_blank,
|
nkeynes@1244 | 527 | NULL, gl_read_render_buffer, NULL, NULL
|
nkeynes@1244 | 528 | };
|
nkeynes@1244 | 529 |
|
nkeynes@1244 | 530 | static gboolean video_gl_init()
|
nkeynes@1244 | 531 | {
|
nkeynes@1258 | 532 | return gl_init_driver(&display_gl_driver, TRUE);
|
nkeynes@1244 | 533 | }
|