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Refactor PBO validate/map code.

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We always need to do PBO validation, so do that in core Mesa before calling driver routine.
This commit is contained in:
Brian
2008-03-21 14:19:28 -06:00
parent 3c9862d337
commit d933be6baf
6 changed files with 81 additions and 88 deletions
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76
src/mesa/main/bufferobj.c
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@@ -570,31 +570,17 @@ _mesa_validate_pbo_access(GLuint dimensions,
* If not sourcing from a PBO, just return the bitmap pointer.
* This is a helper function for (some) drivers.
* Return NULL if error.
* If non-null return, must call validate_and_map_bitmap_pbo() when done.
* If non-null return, must call _mesa_unmap_bitmap_pbo() when done.
*/
const GLubyte *
_mesa_validate_and_map_bitmap_pbo(GLcontext *ctx,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap)
_mesa_map_bitmap_pbo(GLcontext *ctx,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap)
{
const GLubyte *buf;
if (unpack->BufferObj->Name) {
/* unpack from PBO */
if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
GL_COLOR_INDEX, GL_BITMAP,
(GLvoid *) bitmap)) {
_mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)");
return NULL;
}
if (unpack->BufferObj->Pointer) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)");
return NULL;
}
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
GL_READ_ONLY_ARB,
unpack->BufferObj);
@@ -613,7 +599,7 @@ _mesa_validate_and_map_bitmap_pbo(GLcontext *ctx,
/**
* Counterpart to validate_and_map_bitmap_pbo()
* Counterpart to _mesa_map_bitmap_pbo()
* This is a helper function for (some) drivers.
*/
void
@@ -628,33 +614,17 @@ _mesa_unmap_bitmap_pbo(GLcontext *ctx,
/**
* \sa _mesa_validate_and_map_bitmap_pbo
* \sa _mesa_map_bitmap_pbo
*/
const GLvoid *
_mesa_validate_and_map_drawpix_pbo(GLcontext *ctx,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
_mesa_map_drawpix_pbo(GLcontext *ctx,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
{
const GLvoid *buf;
if (unpack->BufferObj->Name) {
/* unpack from PBO */
if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
format, type, pixels)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawPixels(invalid PBO access)");
return NULL;
}
if (unpack->BufferObj->Pointer) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels(PBO is mapped)");
return NULL;
}
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
GL_READ_ONLY_ARB,
unpack->BufferObj);
@@ -687,36 +657,19 @@ _mesa_unmap_drapix_pbo(GLcontext *ctx,
/**
* When doing glReadPixels into a PBO, this function will check for errors
* and map the buffer.
* If PBO is bound, map the buffer, return dest pointer in mapped buffer.
* Call _mesa_unmap_readpix_pbo() when finished
* \return NULL if error
*/
void *
_mesa_validate_and_map_readpix_pbo(GLcontext *ctx,
GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *pack,
GLvoid *dest)
_mesa_map_readpix_pbo(GLcontext *ctx,
const struct gl_pixelstore_attrib *pack,
GLvoid *dest)
{
void *buf;
if (pack->BufferObj->Name) {
/* pack into PBO */
if (!_mesa_validate_pbo_access(2, pack, width, height, 1,
format, type, dest)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(invalid PBO access)");
return NULL;
}
if (pack->BufferObj->Pointer) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)");
return NULL;
}
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
GL_WRITE_ONLY_ARB,
pack->BufferObj);
@@ -735,7 +688,7 @@ _mesa_validate_and_map_readpix_pbo(GLcontext *ctx,
/**
* Counterpart to validate_and_map_readpix_pbo()
* Counterpart to _mesa_map_readpix_pbo()
*/
void
_mesa_unmap_readpix_pbo(GLcontext *ctx,
@@ -747,6 +700,7 @@ _mesa_unmap_readpix_pbo(GLcontext *ctx,
}
/**
* Return the gl_buffer_object for the given ID.
* Always return NULL for ID 0.