| … | |
… | |
| 140 | $th >>= 1; |
140 | $th >>= 1; |
| 141 | } |
141 | } |
| 142 | |
142 | |
| 143 | # decide the amount of space used in the texture |
143 | # decide the amount of space used in the texture |
| 144 | my ($rw, $rh); |
144 | my ($rw, $rh); |
|
|
145 | my ($ox, $oy); # area shift to lessen effetc of buggy opengl implementations (nvida, ati) |
| 145 | my $render; |
146 | my $render; |
| 146 | |
147 | |
| 147 | if ($self->{render_cb}) { |
148 | if ($self->{render_cb}) { |
| 148 | # use only part of the texture |
149 | # use only part of the texture |
| 149 | #$rw >>= 1 while $rw > $tw; |
150 | #$rw >>= 1 while $rw > $tw; |
| … | |
… | |
| 163 | ($dw, $dh) = ($tw, $th); |
164 | ($dw, $dh) = ($tw, $th); |
| 164 | } |
165 | } |
| 165 | } |
166 | } |
| 166 | |
167 | |
| 167 | if ($render) { |
168 | if ($render) { |
|
|
169 | $ox = int .5 * ($::WIDTH - $rw); |
|
|
170 | $oy = int .5 * ($::HEIGHT - $rh); |
|
|
171 | |
| 168 | glViewport 0, 0, $tw, $th; |
172 | glViewport $ox, $oy, $tw, $th; |
|
|
173 | #glScissor 0, 0, $tw, $th; |
|
|
174 | #glEnable GL_SCISSOR_TEST; |
| 169 | glMatrixMode GL_PROJECTION; |
175 | glMatrixMode GL_PROJECTION; |
| 170 | glLoadIdentity; |
176 | glLoadIdentity; |
| 171 | glOrtho 0, $tw, 0, $th, -10000, 10000; |
177 | glOrtho 0, $tw, 0, $th, -10000, 10000; |
| 172 | glMatrixMode GL_MODELVIEW; |
178 | glMatrixMode GL_MODELVIEW; |
| 173 | glLoadIdentity; |
179 | glLoadIdentity; |
| … | |
… | |
| 177 | $self->{render_cb}->($self, $rw, $rh); |
183 | $self->{render_cb}->($self, $rw, $rh); |
| 178 | } else { |
184 | } else { |
| 179 | glClearColor 0, 0, 0, 0; |
185 | glClearColor 0, 0, 0, 0; |
| 180 | glClear GL_COLOR_BUFFER_BIT; |
186 | glClear GL_COLOR_BUFFER_BIT; |
| 181 | glPixelZoom $tw / $dw, $th / $dh; |
187 | glPixelZoom $tw / $dw, $th / $dh; |
|
|
188 | glRasterPos 0, 0; |
| 182 | glDrawPixels $dw, $dh, |
189 | glDrawPixels $dw, $dh, |
| 183 | $self->{format}, |
190 | $self->{format}, |
| 184 | $self->{type}, |
191 | $self->{type}, |
| 185 | $data; |
192 | $data; |
| 186 | glPixelZoom 1, 1; |
193 | glPixelZoom 1, 1; |
| … | |
… | |
| 213 | glGetError; |
220 | glGetError; |
| 214 | |
221 | |
| 215 | if ($render) { |
222 | if ($render) { |
| 216 | glCopyTexImage2D GL_TEXTURE_2D, 0, |
223 | glCopyTexImage2D GL_TEXTURE_2D, 0, |
| 217 | $self->{internalformat}, |
224 | $self->{internalformat}, |
| 218 | 0, 0, |
225 | $ox, $oy, |
| 219 | $tw, $th, |
226 | $tw, $th, |
| 220 | 0; |
227 | 0; |
| 221 | gl_check "copying to texture %dx%d if=%x", |
228 | gl_check "copying to texture %dx%d if=%x", |
| 222 | $tw, $th, $self->{internalformat}; |
229 | $tw, $th, $self->{internalformat}; |
|
|
230 | |
|
|
231 | #glDisable GL_SCISSOR_TEST; |
| 223 | } else { |
232 | } else { |
| 224 | glTexImage2D GL_TEXTURE_2D, 0, |
233 | glTexImage2D GL_TEXTURE_2D, 0, |
| 225 | $self->{internalformat}, |
234 | $self->{internalformat}, |
| 226 | $dw, $dh, |
235 | $dw, $dh, |
| 227 | 0, |
236 | 0, |
