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-rw-r--r--src/mesa/drivers/dri/intel/intel_buffer_objects.c2
-rw-r--r--src/mesa/drivers/dri/nouveau/nouveau_bufferobj.c2
-rw-r--r--src/mesa/drivers/dri/radeon/radeon_buffer_objects.c2
-rw-r--r--src/mesa/main/bufferobj.c44
-rw-r--r--src/mesa/main/bufferobj.h3
-rw-r--r--src/mesa/state_tracker/st_cb_bufferobjects.c2
6 files changed, 37 insertions, 18 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_buffer_objects.c b/src/mesa/drivers/dri/intel/intel_buffer_objects.c
index 03dd179ee0b..600f01ca6f0 100644
--- a/src/mesa/drivers/dri/intel/intel_buffer_objects.c
+++ b/src/mesa/drivers/dri/intel/intel_buffer_objects.c
@@ -72,7 +72,7 @@ intel_bufferobj_alloc(struct gl_context * ctx, GLuint name, GLenum target)
{
struct intel_buffer_object *obj = CALLOC_STRUCT(intel_buffer_object);
- _mesa_initialize_buffer_object(&obj->Base, name, target);
+ _mesa_initialize_buffer_object(ctx, &obj->Base, name, target);
obj->buffer = NULL;
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_bufferobj.c b/src/mesa/drivers/dri/nouveau/nouveau_bufferobj.c
index dc5b1528b07..f7ad895ac9a 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_bufferobj.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_bufferobj.c
@@ -56,7 +56,7 @@ nouveau_bufferobj_new(struct gl_context *ctx, GLuint buffer, GLenum target)
if (!nbo)
return NULL;
- _mesa_initialize_buffer_object(&nbo->base, buffer, target);
+ _mesa_initialize_buffer_object(ctx, &nbo->base, buffer, target);
return &nbo->base;
}
diff --git a/src/mesa/drivers/dri/radeon/radeon_buffer_objects.c b/src/mesa/drivers/dri/radeon/radeon_buffer_objects.c
index 7b59c0377f8..5abc52ba3f7 100644
--- a/src/mesa/drivers/dri/radeon/radeon_buffer_objects.c
+++ b/src/mesa/drivers/dri/radeon/radeon_buffer_objects.c
@@ -46,7 +46,7 @@ radeonNewBufferObject(struct gl_context * ctx,
{
struct radeon_buffer_object *obj = CALLOC_STRUCT(radeon_buffer_object);
- _mesa_initialize_buffer_object(&obj->Base, name, target);
+ _mesa_initialize_buffer_object(ctx, &obj->Base, name, target);
obj->bo = NULL;
diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 5f8071f587f..5b6db78d821 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -49,13 +49,6 @@
/*#define BOUNDS_CHECK*/
-#if FEATURE_OES_mapbuffer
-#define DEFAULT_ACCESS GL_MAP_WRITE_BIT
-#else
-#define DEFAULT_ACCESS (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)
-#endif
-
-
/**
* Used as a placeholder for buffer objects between glGenBuffers() and
* glBindBuffer() so that glIsBuffer() can work correctly.
@@ -122,6 +115,30 @@ get_buffer(struct gl_context *ctx, GLenum target)
}
+static inline GLenum
+default_access_mode(const struct gl_context *ctx)
+{
+ /* Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
+ *
+ * Name Type Initial Value Legal Values
+ * ... ... ... ...
+ * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
+ * READ_WRITE
+ *
+ * However, table 6.8 in the GL_OES_mapbuffer extension says:
+ *
+ * Get Value Type Get Command Value Description
+ * --------- ---- ----------- ----- -----------
+ * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
+ *
+ * The difference is because GL_OES_mapbuffer only supports mapping buffers
+ * write-only.
+ */
+ return (ctx->API == API_OPENGLES)
+ ? GL_MAP_WRITE_BIT : (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT);
+}
+
+
/**
* Convert a GLbitfield describing the mapped buffer access flags
* into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
@@ -213,7 +230,7 @@ _mesa_new_buffer_object( struct gl_context *ctx, GLuint name, GLenum target )
(void) ctx;
obj = MALLOC_STRUCT(gl_buffer_object);
- _mesa_initialize_buffer_object(obj, name, target);
+ _mesa_initialize_buffer_object(ctx, obj, name, target);
return obj;
}
@@ -311,7 +328,8 @@ _mesa_reference_buffer_object_(struct gl_context *ctx,
* Initialize a buffer object to default values.
*/
void
-_mesa_initialize_buffer_object( struct gl_buffer_object *obj,
+_mesa_initialize_buffer_object( struct gl_context *ctx,
+ struct gl_buffer_object *obj,
GLuint name, GLenum target )
{
(void) target;
@@ -321,7 +339,7 @@ _mesa_initialize_buffer_object( struct gl_buffer_object *obj,
obj->RefCount = 1;
obj->Name = name;
obj->Usage = GL_STATIC_DRAW_ARB;
- obj->AccessFlags = DEFAULT_ACCESS;
+ obj->AccessFlags = default_access_mode(ctx);
}
@@ -740,7 +758,7 @@ _mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
if (_mesa_bufferobj_mapped(bufObj)) {
/* if mapped, unmap it now */
ctx->Driver.UnmapBuffer(ctx, bufObj);
- bufObj->AccessFlags = DEFAULT_ACCESS;
+ bufObj->AccessFlags = default_access_mode(ctx);
bufObj->Pointer = NULL;
}
@@ -900,7 +918,7 @@ _mesa_BufferDataARB(GLenum target, GLsizeiptrARB size,
if (_mesa_bufferobj_mapped(bufObj)) {
/* Unmap the existing buffer. We'll replace it now. Not an error. */
ctx->Driver.UnmapBuffer(ctx, bufObj);
- bufObj->AccessFlags = DEFAULT_ACCESS;
+ bufObj->AccessFlags = default_access_mode(ctx);
ASSERT(bufObj->Pointer == NULL);
}
@@ -1119,7 +1137,7 @@ _mesa_UnmapBufferARB(GLenum target)
#endif
status = ctx->Driver.UnmapBuffer( ctx, bufObj );
- bufObj->AccessFlags = DEFAULT_ACCESS;
+ bufObj->AccessFlags = default_access_mode(ctx);
ASSERT(bufObj->Pointer == NULL);
ASSERT(bufObj->Offset == 0);
ASSERT(bufObj->Length == 0);
diff --git a/src/mesa/main/bufferobj.h b/src/mesa/main/bufferobj.h
index c0d5a641a46..a7ce3792898 100644
--- a/src/mesa/main/bufferobj.h
+++ b/src/mesa/main/bufferobj.h
@@ -71,7 +71,8 @@ extern struct gl_buffer_object *
_mesa_lookup_bufferobj(struct gl_context *ctx, GLuint buffer);
extern void
-_mesa_initialize_buffer_object( struct gl_buffer_object *obj,
+_mesa_initialize_buffer_object( struct gl_context *ctx,
+ struct gl_buffer_object *obj,
GLuint name, GLenum target );
extern void
diff --git a/src/mesa/state_tracker/st_cb_bufferobjects.c b/src/mesa/state_tracker/st_cb_bufferobjects.c
index 6d95d57c1b3..6534a4347ab 100644
--- a/src/mesa/state_tracker/st_cb_bufferobjects.c
+++ b/src/mesa/state_tracker/st_cb_bufferobjects.c
@@ -58,7 +58,7 @@ st_bufferobj_alloc(struct gl_context *ctx, GLuint name, GLenum target)
if (!st_obj)
return NULL;
- _mesa_initialize_buffer_object(&st_obj->Base, name, target);
+ _mesa_initialize_buffer_object(ctx, &st_obj->Base, name, target);
return &st_obj->Base;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 14:25:49 +0000