From fc6ccd21929418355e56ae6523b32fdcacd77a6c Mon Sep 17 00:00:00 2001
From: Carsten Haitzler <raster@rasterman.com>
Date: Tue, 2 Jan 2007 02:43:11 +0000
Subject: [PATCH] and use pixelstorei to do the row skips :)

SVN revision: 27714
---
 .../modules/engines/gl_common/evas_gl_context.c    |  3 +-
 .../modules/engines/gl_common/evas_gl_texture.c    | 82 ++++++++++++++--------
 2 files changed, 55 insertions(+), 30 deletions(-)

diff --git a/legacy/evas/src/modules/engines/gl_common/evas_gl_context.c b/legacy/evas/src/modules/engines/gl_common/evas_gl_context.c
index aac4e6e..2346678 100644
--- a/legacy/evas/src/modules/engines/gl_common/evas_gl_context.c
+++ b/legacy/evas/src/modules/engines/gl_common/evas_gl_context.c
@@ -480,6 +480,7 @@ _evas_gl_common_other_set(Evas_GL_Context *gc)
    glDisable(GL_LINE_SMOOTH);
    glDisable(GL_CULL_FACE);
    glDepthMask(GL_FALSE);
-   glPixelStorei(GL_PACK_ALIGNMENT, 1);
+   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+   glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    gc->change.other = 0;
 }
diff --git a/legacy/evas/src/modules/engines/gl_common/evas_gl_texture.c b/legacy/evas/src/modules/engines/gl_common/evas_gl_texture.c
index 51d257d..a62adee 100644
--- a/legacy/evas/src/modules/engines/gl_common/evas_gl_texture.c
+++ b/legacy/evas/src/modules/engines/gl_common/evas_gl_texture.c
@@ -486,13 +486,16 @@ evas_gl_common_ycbcr601pl_texture_new(Evas_GL_Context *gc, unsigned char **rows,
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
      }
-   glTexImage2D(GL_TEXTURE_2D, 0,
-		texfmt, tw, th, 0,
+   glTexImage2D(GL_TEXTURE_2D, 0, texfmt, tex->w, tex->h, 0,
 		texfmt, GL_UNSIGNED_BYTE, NULL);
-   for (y = 0; y < tex->h; y++)
-     glTexSubImage2D(GL_TEXTURE_2D, 0,
-		     0, y, tex->w, 1,
-		     texfmt, GL_UNSIGNED_BYTE, rows[y]);
+   if (tex->h >= 2)
+     glPixelStorei(GL_UNPACK_ROW_LENGTH, rows[1] - rows[0]);
+   glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex->w, tex->h,
+		   texfmt, GL_UNSIGNED_BYTE, rows[0]);
+//   for (y = 0; y < tex->h; y++)
+//     glTexSubImage2D(GL_TEXTURE_2D, 0,
+//		     0, y, tex->w, 1,
+//		     texfmt, GL_UNSIGNED_BYTE, rows[y]);
    
    glGenTextures(1, &(tex->texture2));
    glBindTexture(GL_TEXTURE_2D, tex->texture2);
@@ -509,13 +512,16 @@ evas_gl_common_ycbcr601pl_texture_new(Evas_GL_Context *gc, unsigned char **rows,
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
      }
-   glTexImage2D(GL_TEXTURE_2D, 0,
-		texfmt, tw / 2, th / 2, 0,
+   glTexImage2D(GL_TEXTURE_2D, 0, texfmt, tex->w / 2, tex->h / 2, 0,
 		texfmt, GL_UNSIGNED_BYTE, NULL);
-   for (y = 0; y < (tex->h / 2); y++)
-     glTexSubImage2D(GL_TEXTURE_2D, 0,
-		     0, y, tex->w / 2, 1,
-		     texfmt, GL_UNSIGNED_BYTE, rows[tex->h + y]);
+   if (tex->h >= 4)
+     glPixelStorei(GL_UNPACK_ROW_LENGTH, rows[tex->h + 1] - rows[tex->h]);
+   glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex->w / 2, tex->h / 2,
+		   texfmt, GL_UNSIGNED_BYTE, rows[tex->h]);
+//   for (y = 0; y < (tex->h / 2); y++)
+//     glTexSubImage2D(GL_TEXTURE_2D, 0,
+//		     0, y, tex->w / 2, 1,
+//		     texfmt, GL_UNSIGNED_BYTE, rows[tex->h + y]);
    
    glGenTextures(1, &(tex->texture3));
    glBindTexture(GL_TEXTURE_2D, tex->texture3);
@@ -533,13 +539,18 @@ evas_gl_common_ycbcr601pl_texture_new(Evas_GL_Context *gc, unsigned char **rows,
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
      }
    glTexImage2D(GL_TEXTURE_2D, 0,
-		texfmt, tw / 2, th / 2, 0,
+		texfmt, tex->w / 2, tex->h / 2, 0,
 		texfmt, GL_UNSIGNED_BYTE, NULL);
-   for (y = 0; y < (tex->h / 2); y++)
-     glTexSubImage2D(GL_TEXTURE_2D, 0,
-		     0, y, tex->w / 2, 1,
-		     texfmt, GL_UNSIGNED_BYTE, rows[tex->h + (tex->h / 2) + y]);
+   if (tex->h >= 4)
+     glPixelStorei(GL_UNPACK_ROW_LENGTH, rows[tex->h + (tex->h / 2) + 1] - rows[tex->h + (tex->h / 2)]);
+   glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex->w / 2, tex->h / 2,
+		   texfmt, GL_UNSIGNED_BYTE, rows[tex->h + (tex->h / 2)]);
+//   for (y = 0; y < (tex->h / 2); y++)
+//     glTexSubImage2D(GL_TEXTURE_2D, 0,
+//		     0, y, tex->w / 2, 1,
+//		     texfmt, GL_UNSIGNED_BYTE, rows[tex->h + (tex->h / 2) + y]);
    
+   glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    glUseProgramObjectARB(0);
    
    if (gc->texture) gc->texture->references--;
@@ -571,10 +582,14 @@ evas_gl_common_ycbcr601pl_texture_update(Evas_GL_Texture *tex, unsigned char **r
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
      }
-   for (y = 0; y < tex->h; y++)
-     glTexSubImage2D(GL_TEXTURE_2D, 0,
-		     0, y, tex->w, 1,
-		     texfmt, GL_UNSIGNED_BYTE, rows[y]);
+   if (tex->h >= 2)
+     glPixelStorei(GL_UNPACK_ROW_LENGTH, rows[1] - rows[0]);
+   glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex->w, tex->h,
+		   texfmt, GL_UNSIGNED_BYTE, rows[0]);
+//   for (y = 0; y < tex->h; y++)
+//     glTexSubImage2D(GL_TEXTURE_2D, 0,
+//		     0, y, tex->w, 1,
+//		     texfmt, GL_UNSIGNED_BYTE, rows[y]);
    
    glBindTexture(GL_TEXTURE_2D, tex->texture2);
    if (smooth)
@@ -587,10 +602,14 @@ evas_gl_common_ycbcr601pl_texture_update(Evas_GL_Texture *tex, unsigned char **r
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
      }
-   for (y = 0; y < (tex->h / 2); y++)
-     glTexSubImage2D(GL_TEXTURE_2D, 0,
-		     0, y, tex->w / 2, 1,
-		     texfmt, GL_UNSIGNED_BYTE, rows[tex->h + y]);
+   if (tex->h >= 4)
+     glPixelStorei(GL_UNPACK_ROW_LENGTH, rows[tex->h + 1] - rows[tex->h]);
+   glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex->w / 2, tex->h / 2,
+		   texfmt, GL_UNSIGNED_BYTE, rows[tex->h]);
+//   for (y = 0; y < (tex->h / 2); y++)
+//     glTexSubImage2D(GL_TEXTURE_2D, 0,
+//		     0, y, tex->w / 2, 1,
+//		     texfmt, GL_UNSIGNED_BYTE, rows[tex->h + y]);
    
    glBindTexture(GL_TEXTURE_2D, tex->texture3);
    if (smooth)
@@ -603,10 +622,15 @@ evas_gl_common_ycbcr601pl_texture_update(Evas_GL_Texture *tex, unsigned char **r
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
      }
-   for (y = 0; y < (tex->h / 2); y++)
-     glTexSubImage2D(GL_TEXTURE_2D, 0,
-		     0, y, tex->w / 2, 1,
-		     texfmt, GL_UNSIGNED_BYTE, rows[tex->h + (tex->h / 2) + y]);
+   if (tex->h >= 4)
+     glPixelStorei(GL_UNPACK_ROW_LENGTH, rows[tex->h + (tex->h / 2) + 1] - rows[tex->h + (tex->h / 2)]);
+   glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex->w / 2, tex->h / 2,
+		   texfmt, GL_UNSIGNED_BYTE, rows[tex->h + (tex->h / 2)]);
+//   for (y = 0; y < (tex->h / 2); y++)
+//     glTexSubImage2D(GL_TEXTURE_2D, 0,
+//		     0, y, tex->w / 2, 1,
+//		     texfmt, GL_UNSIGNED_BYTE, rows[tex->h + (tex->h / 2) + y]);
+   glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
 
    if (tex->gc->texture) tex->gc->texture->references--;
    tex->gc->texture = tex;
-- 
2.7.4