*
**************************************************************************/
+/**
+ * @file intel_buffer_objects.c
+ *
+ * This provides core GL buffer object functionality.
+ */
#include "main/imports.h"
#include "main/mtypes.h"
#include "intel_blit.h"
#include "intel_buffer_objects.h"
#include "intel_batchbuffer.h"
-#include "intel_fbo.h"
-#include "intel_mipmap_tree.h"
-#include "intel_regions.h"
-
-#include "brw_context.h"
static GLboolean
intel_bufferobj_unmap(struct gl_context * ctx, struct gl_buffer_object *obj);
}
/**
+ * The NewBufferObject() driver hook.
+ *
+ * Allocates a new intel_buffer_object structure and initializes it.
+ *
* There is some duplication between mesa's bufferobjects and our
* bufmgr buffers. Both have an integer handle and a hashtable to
* lookup an opaque structure. It would be nice if the handles and
}
/**
- * Deallocate/free a vertex/pixel buffer object.
- * Called via glDeleteBuffersARB().
+ * The DeleteBuffer() driver hook.
+ *
+ * Deletes a single OpenGL buffer object. Used by glDeleteBuffers().
*/
static void
intel_bufferobj_free(struct gl_context * ctx, struct gl_buffer_object *obj)
}
-
/**
- * Allocate space for and store data in a buffer object. Any data that was
- * previously stored in the buffer object is lost. If data is NULL,
- * memory will be allocated, but no copy will occur.
- * Called via ctx->Driver.BufferData().
+ * The BufferData() driver hook.
+ *
+ * Implements glBufferData(), which recreates a buffer object's data store
+ * and populates it with the given data, if present.
+ *
+ * Any data that was previously stored in the buffer object is lost.
+ *
* \return true for success, false if out of memory
*/
static GLboolean
/**
- * Replace data in a subrange of buffer object. If the data range
- * specified by size + offset extends beyond the end of the buffer or
- * if data is NULL, no copy is performed.
- * Called via glBufferSubDataARB().
+ * The BufferSubData() driver hook.
+ *
+ * Implements glBufferSubData(), which replaces a portion of the data in a
+ * buffer object.
+ *
+ * If the data range specified by (size + offset) extends beyond the end of
+ * the buffer or if data is NULL, no copy is performed.
*/
static void
intel_bufferobj_subdata(struct gl_context * ctx,
/**
- * Called via glGetBufferSubDataARB().
+ * The GetBufferSubData() driver hook.
+ *
+ * Implements glGetBufferSubData(), which copies a subrange of a buffer
+ * object into user memory.
*/
static void
intel_bufferobj_get_subdata(struct gl_context * ctx,
}
-
/**
- * Called via glMapBufferRange and glMapBuffer
+ * The MapBufferRange() driver hook.
+ *
+ * This implements both glMapBufferRange() and glMapBuffer().
*
* The goal of this extension is to allow apps to accumulate their rendering
* at the same time as they accumulate their buffer object. Without it,
return obj->Pointer;
}
-/* Ideally we'd use a BO to avoid taking up cache space for the temporary
+/**
+ * The FlushMappedBufferRange() driver hook.
+ *
+ * Implements glFlushMappedBufferRange(), which signifies that modifications
+ * have been made to a range of a mapped buffer, and it should be flushed.
+ *
+ * This is only used for buffers mapped with GL_MAP_FLUSH_EXPLICIT_BIT.
+ *
+ * Ideally we'd use a BO to avoid taking up cache space for the temporary
* data, but FlushMappedBufferRange may be followed by further writes to
* the pointer, so we would have to re-map after emitting our blit, which
* would defeat the point.
/**
- * Called via glUnmapBuffer().
+ * The UnmapBuffer() driver hook.
+ *
+ * Implements glUnmapBuffer().
*/
static GLboolean
intel_bufferobj_unmap(struct gl_context * ctx, struct gl_buffer_object *obj)
return intel_obj->buffer;
}
-#define INTEL_UPLOAD_SIZE (64*1024)
-
-void
-intel_upload_finish(struct brw_context *brw)
-{
- if (!brw->upload.bo)
- return;
-
- if (brw->upload.buffer_len) {
- drm_intel_bo_subdata(brw->upload.bo,
- brw->upload.buffer_offset,
- brw->upload.buffer_len,
- brw->upload.buffer);
- brw->upload.buffer_len = 0;
- }
-
- drm_intel_bo_unreference(brw->upload.bo);
- brw->upload.bo = NULL;
-}
-
-static void wrap_buffers(struct brw_context *brw, GLuint size)
-{
- intel_upload_finish(brw);
-
- if (size < INTEL_UPLOAD_SIZE)
- size = INTEL_UPLOAD_SIZE;
-
- brw->upload.bo = drm_intel_bo_alloc(brw->bufmgr, "upload", size, 0);
- brw->upload.offset = 0;
-}
-
-void intel_upload_data(struct brw_context *brw,
- const void *ptr, GLuint size, GLuint align,
- drm_intel_bo **return_bo,
- GLuint *return_offset)
-{
- GLuint base, delta;
-
- base = (brw->upload.offset + align - 1) / align * align;
- if (brw->upload.bo == NULL || base + size > brw->upload.bo->size) {
- wrap_buffers(brw, size);
- base = 0;
- }
-
- drm_intel_bo_reference(brw->upload.bo);
- *return_bo = brw->upload.bo;
- *return_offset = base;
-
- delta = base - brw->upload.offset;
- if (brw->upload.buffer_len &&
- brw->upload.buffer_len + delta + size > sizeof(brw->upload.buffer))
- {
- drm_intel_bo_subdata(brw->upload.bo,
- brw->upload.buffer_offset,
- brw->upload.buffer_len,
- brw->upload.buffer);
- brw->upload.buffer_len = 0;
- }
-
- if (size < sizeof(brw->upload.buffer))
- {
- if (brw->upload.buffer_len == 0)
- brw->upload.buffer_offset = base;
- else
- brw->upload.buffer_len += delta;
-
- memcpy(brw->upload.buffer + brw->upload.buffer_len, ptr, size);
- brw->upload.buffer_len += size;
- }
- else
- {
- drm_intel_bo_subdata(brw->upload.bo, base, size, ptr);
- }
-
- brw->upload.offset = base + size;
-}
-
-void *intel_upload_map(struct brw_context *brw, GLuint size, GLuint align)
-{
- GLuint base, delta;
- char *ptr;
-
- base = (brw->upload.offset + align - 1) / align * align;
- if (brw->upload.bo == NULL || base + size > brw->upload.bo->size) {
- wrap_buffers(brw, size);
- base = 0;
- }
-
- delta = base - brw->upload.offset;
- if (brw->upload.buffer_len &&
- brw->upload.buffer_len + delta + size > sizeof(brw->upload.buffer))
- {
- drm_intel_bo_subdata(brw->upload.bo,
- brw->upload.buffer_offset,
- brw->upload.buffer_len,
- brw->upload.buffer);
- brw->upload.buffer_len = 0;
- }
-
- if (size <= sizeof(brw->upload.buffer)) {
- if (brw->upload.buffer_len == 0)
- brw->upload.buffer_offset = base;
- else
- brw->upload.buffer_len += delta;
-
- ptr = brw->upload.buffer + brw->upload.buffer_len;
- brw->upload.buffer_len += size;
- } else
- ptr = malloc(size);
-
- return ptr;
-}
-
-void intel_upload_unmap(struct brw_context *brw,
- const void *ptr, GLuint size, GLuint align,
- drm_intel_bo **return_bo,
- GLuint *return_offset)
-{
- GLuint base;
-
- base = (brw->upload.offset + align - 1) / align * align;
- if (size > sizeof(brw->upload.buffer)) {
- drm_intel_bo_subdata(brw->upload.bo, base, size, ptr);
- free((void*)ptr);
- }
-
- drm_intel_bo_reference(brw->upload.bo);
- *return_bo = brw->upload.bo;
- *return_offset = base;
-
- brw->upload.offset = base + size;
-}
-
drm_intel_bo *
intel_bufferobj_source(struct brw_context *brw,
struct intel_buffer_object *intel_obj,
return intel_obj->buffer;
}
+/**
+ * The CopyBufferSubData() driver hook.
+ *
+ * Implements glCopyBufferSubData(), which copies a portion of one buffer
+ * object's data to another. Independent source and destination offsets
+ * are allowed.
+ */
static void
intel_bufferobj_copy_subdata(struct gl_context *ctx,
struct gl_buffer_object *src,
intel_batchbuffer_emit_mi_flush(brw);
}
-static GLenum
-intel_buffer_purgeable(drm_intel_bo *buffer)
-{
- int retained = 0;
-
- if (buffer != NULL)
- retained = drm_intel_bo_madvise (buffer, I915_MADV_DONTNEED);
-
- return retained ? GL_VOLATILE_APPLE : GL_RELEASED_APPLE;
-}
-
-static GLenum
-intel_buffer_object_purgeable(struct gl_context * ctx,
- struct gl_buffer_object *obj,
- GLenum option)
-{
- struct intel_buffer_object *intel_obj = intel_buffer_object (obj);
-
- if (intel_obj->buffer != NULL)
- return intel_buffer_purgeable(intel_obj->buffer);
-
- if (option == GL_RELEASED_APPLE) {
- return GL_RELEASED_APPLE;
- } else {
- /* XXX Create the buffer and madvise(MADV_DONTNEED)? */
- struct brw_context *brw = brw_context(ctx);
- drm_intel_bo *bo = intel_bufferobj_buffer(brw, intel_obj, INTEL_READ);
-
- return intel_buffer_purgeable(bo);
- }
-}
-
-static GLenum
-intel_texture_object_purgeable(struct gl_context * ctx,
- struct gl_texture_object *obj,
- GLenum option)
-{
- struct intel_texture_object *intel;
-
- (void) ctx;
- (void) option;
-
- intel = intel_texture_object(obj);
- if (intel->mt == NULL || intel->mt->region == NULL)
- return GL_RELEASED_APPLE;
-
- return intel_buffer_purgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_render_object_purgeable(struct gl_context * ctx,
- struct gl_renderbuffer *obj,
- GLenum option)
-{
- struct intel_renderbuffer *intel;
-
- (void) ctx;
- (void) option;
-
- intel = intel_renderbuffer(obj);
- if (intel->mt == NULL)
- return GL_RELEASED_APPLE;
-
- return intel_buffer_purgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_buffer_unpurgeable(drm_intel_bo *buffer)
-{
- int retained;
-
- retained = 0;
- if (buffer != NULL)
- retained = drm_intel_bo_madvise (buffer, I915_MADV_WILLNEED);
-
- return retained ? GL_RETAINED_APPLE : GL_UNDEFINED_APPLE;
-}
-
-static GLenum
-intel_buffer_object_unpurgeable(struct gl_context * ctx,
- struct gl_buffer_object *obj,
- GLenum option)
-{
- (void) ctx;
- (void) option;
-
- return intel_buffer_unpurgeable(intel_buffer_object (obj)->buffer);
-}
-
-static GLenum
-intel_texture_object_unpurgeable(struct gl_context * ctx,
- struct gl_texture_object *obj,
- GLenum option)
-{
- struct intel_texture_object *intel;
-
- (void) ctx;
- (void) option;
-
- intel = intel_texture_object(obj);
- if (intel->mt == NULL || intel->mt->region == NULL)
- return GL_UNDEFINED_APPLE;
-
- return intel_buffer_unpurgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_render_object_unpurgeable(struct gl_context * ctx,
- struct gl_renderbuffer *obj,
- GLenum option)
-{
- struct intel_renderbuffer *intel;
-
- (void) ctx;
- (void) option;
-
- intel = intel_renderbuffer(obj);
- if (intel->mt == NULL)
- return GL_UNDEFINED_APPLE;
-
- return intel_buffer_unpurgeable(intel->mt->region->bo);
-}
-
void
intelInitBufferObjectFuncs(struct dd_function_table *functions)
{
functions->FlushMappedBufferRange = intel_bufferobj_flush_mapped_range;
functions->UnmapBuffer = intel_bufferobj_unmap;
functions->CopyBufferSubData = intel_bufferobj_copy_subdata;
-
- functions->BufferObjectPurgeable = intel_buffer_object_purgeable;
- functions->TextureObjectPurgeable = intel_texture_object_purgeable;
- functions->RenderObjectPurgeable = intel_render_object_purgeable;
-
- functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable;
- functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable;
- functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable;
}
projects / mesa.git / blobdiff