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diff src/video/SDL_renderer_gl.c @ 3446:0f969d273f65

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First pass (untested) at RenderWritePixels()
author Sam Lantinga <slouken@libsdl.org>
date Wed, 18 Nov 2009 07:35:00 +0000
parents 7f477a22dff5
children 294b770c1989
line wrap: on
line diff
--- a/src/video/SDL_renderer_gl.c	Wed Nov 18 07:34:05 2009 +0000
+++ b/src/video/SDL_renderer_gl.c	Wed Nov 18 07:35:00 2009 +0000
@@ -1273,9 +1273,9 @@
     } else if (pixel_format == SDL_PIXELFORMAT_INDEX1MSB) {
         data->glPixelStorei(GL_PACK_LSB_FIRST, 0);
     }
-    //data->glPixelStorei(GL_PACK_ALIGNMENT, 1);
-    //data->glPixelStorei(GL_PACK_ROW_LENGTH,
-    //                    (pitch / bytes_per_pixel(pixel_format)));
+    data->glPixelStorei(GL_PACK_ALIGNMENT, 1);
+    data->glPixelStorei(GL_PACK_ROW_LENGTH,
+                        (pitch / bytes_per_pixel(pixel_format)));
     data->glReadBuffer(GL_FRONT);
 
 memset(pixels, 0xff, rect->h*pitch);
@@ -1325,8 +1325,8 @@
     data->glPixelStorei(GL_UNPACK_ROW_LENGTH,
                         (pitch / bytes_per_pixel(pixel_format)));
 
-    data->glReadPixels(rect->x, rect->y+rect->h-1, rect->w, rect->h,
-                       format, type, pixels);
+    data->glRasterPos2i(rect->x, rect->y);
+    data->glDrawPixels(rect->w, rect->h, format, type, pixels);
 
     return 0;
 }