diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_fbo.c | 59 | ||||
| -rw-r--r-- | src/mesa/state_tracker/st_cb_fbo.h | 2 |
2 files changed, 61 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_cb_fbo.c b/src/mesa/state_tracker/st_cb_fbo.c index 6da65d7b9ed..e04cb4406f9 100644 --- a/src/mesa/state_tracker/st_cb_fbo.c +++ b/src/mesa/state_tracker/st_cb_fbo.c @@ -630,6 +630,62 @@ st_ReadBuffer(struct gl_context *ctx, GLenum buffer) } + +/** + * Called via ctx->Driver.MapRenderbuffer. + */ +static void +st_MapRenderbuffer(struct gl_context *ctx, + struct gl_renderbuffer *rb, + GLuint x, GLuint y, GLuint w, GLuint h, + GLbitfield mode, + GLubyte **mapOut, GLint *rowStrideOut) +{ + struct st_context *st = st_context(ctx); + struct st_renderbuffer *strb = st_renderbuffer(rb); + struct pipe_context *pipe = st->pipe; + unsigned usage; + + usage = 0x0; + if (mode & GL_MAP_READ_BIT) + usage |= PIPE_TRANSFER_READ; + if (mode & GL_MAP_WRITE_BIT) + usage |= PIPE_TRANSFER_WRITE; + + strb->transfer = pipe_get_transfer(pipe, + strb->texture, + strb->rtt_level, + strb->rtt_face + strb->rtt_slice, + usage, x, y, w, h); + if (strb->transfer) { + *mapOut = pipe_transfer_map(pipe, strb->transfer); + *rowStrideOut = strb->transfer->stride; + } + else { + *mapOut = NULL; + *rowStrideOut = 0; + } +} + + +/** + * Called via ctx->Driver.UnmapRenderbuffer. + */ +static void +st_UnmapRenderbuffer(struct gl_context *ctx, + struct gl_renderbuffer *rb) +{ + struct st_context *st = st_context(ctx); + struct st_renderbuffer *strb = st_renderbuffer(rb); + struct pipe_context *pipe = st->pipe; + + pipe_transfer_unmap(pipe, strb->transfer); + pipe->transfer_destroy(pipe, strb->transfer); + strb->transfer = NULL; +} + + + void st_init_fbo_functions(struct dd_function_table *functions) { #if FEATURE_EXT_framebuffer_object @@ -647,6 +703,9 @@ void st_init_fbo_functions(struct dd_function_table *functions) functions->DrawBuffers = st_DrawBuffers; functions->ReadBuffer = st_ReadBuffer; + + functions->MapRenderbuffer = st_MapRenderbuffer; + functions->UnmapRenderbuffer = st_UnmapRenderbuffer; } diff --git a/src/mesa/state_tracker/st_cb_fbo.h b/src/mesa/state_tracker/st_cb_fbo.h index 1afa3fe6ec3..1be017314ef 100644 --- a/src/mesa/state_tracker/st_cb_fbo.h +++ b/src/mesa/state_tracker/st_cb_fbo.h @@ -51,6 +51,8 @@ struct st_renderbuffer enum pipe_format format; /** preferred format, or PIPE_FORMAT_NONE */ GLboolean defined; /**< defined contents? */ + struct pipe_transfer *transfer; /**< only used when mapping the resource */ + /** * Used only when hardware accumulation buffers are not supported. */ |