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i965: align the address of the first element within

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the index buffer. (fix#11910)
This commit is contained in:
Xiang, Haihao 2007-09-14 11:10:23 +08:00
parent 75a0f7f4a7
commit ea07a0df9a
1 changed files with 22 additions and 0 deletions
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22
src/mesa/drivers/dri/i965/brw_draw_upload.c
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@ -593,6 +593,28 @@ void brw_upload_indices( struct brw_context *brw,
ib_size,
index_buffer->ptr,
bufferobj);
} else {
if (((1 << get_index_type(index_buffer->type)) - 1) & offset) {
struct gl_buffer_object *vbo;
GLuint voffset;
GLubyte *map = ctx->Driver.MapBuffer(ctx,
GL_ELEMENT_ARRAY_BUFFER_ARB,
GL_DYNAMIC_DRAW_ARB,
bufferobj);
map += offset;
get_space(brw, ib_size, &vbo, &voffset);
ctx->Driver.BufferSubData(ctx,
GL_ELEMENT_ARRAY_BUFFER_ARB,
voffset,
ib_size,
map,
vbo);
ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobj);
bufferobj = vbo;
offset = voffset;
}
}
/* Emit the indexbuffer packet: