if (strb->format != PIPE_FORMAT_NONE)
format = strb->format;
else
- format = st_choose_renderbuffer_format(pipe, internalFormat);
+ format = st_choose_renderbuffer_format(pipe->screen, internalFormat);
/* init renderbuffer fields */
strb->Base.Width = width;
strb->Base.Height = height;
init_renderbuffer_bits(strb, format);
+ strb->defined = GL_FALSE; /* undefined contents now */
+
if(strb->software) {
struct pipe_format_block block;
size_t size;
strb->texture,
0, 0, 0,
surface_usage );
-
- assert(strb->surface->texture);
- assert(strb->surface->format);
- assert(strb->surface->width == width);
- assert(strb->surface->height == height);
-
+ if (strb->surface) {
+ assert(strb->surface->texture);
+ assert(strb->surface->format);
+ assert(strb->surface->width == width);
+ assert(strb->surface->height == height);
+ }
return strb->surface != NULL;
}
default:
_mesa_problem(NULL,
"Unexpected format in st_new_renderbuffer_fb");
+ _mesa_free(strb);
return NULL;
}
rb->Width = texImage->Width2;
rb->Height = texImage->Height2;
+ rb->_BaseFormat = texImage->_BaseFormat;
/*printf("***** render to texture level %d: %d x %d\n", att->TextureLevel, rb->Width, rb->Height);*/
/*printf("***** pipe texture %d x %d\n", pt->width[0], pt->height[0]);*/
}
+/**
+ * Validate a renderbuffer attachment for a particular usage.
+ */
+
+static GLboolean
+st_validate_attachment(struct pipe_screen *screen,
+ const struct gl_renderbuffer_attachment *att,
+ GLuint usage)
+{
+ const struct st_texture_object *stObj =
+ st_texture_object(att->Texture);
+
+ /**
+ * Only validate texture attachments for now, since
+ * st_renderbuffer_alloc_storage makes sure that
+ * the format is supported.
+ */
+
+ if (att->Type != GL_TEXTURE)
+ return GL_TRUE;
+
+ if (!stObj)
+ return GL_FALSE;
+
+ return screen->is_format_supported(screen, stObj->pt->format,
+ PIPE_TEXTURE_2D,
+ usage, 0);
+}
+
/**
* Check that the framebuffer configuration is valid in terms of what
* the driver can support.
static void
st_validate_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb)
{
+ struct pipe_screen *screen = ctx->st->pipe->screen;
const struct gl_renderbuffer *depthRb =
fb->Attachment[BUFFER_DEPTH].Renderbuffer;
const struct gl_renderbuffer *stencilRb =
fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+ GLuint i;
if (stencilRb && depthRb && stencilRb != depthRb) {
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
+ return;
+ }
+
+ if (!st_validate_attachment(screen,
+ &fb->Attachment[BUFFER_DEPTH],
+ PIPE_TEXTURE_USAGE_DEPTH_STENCIL)) {
+ fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
+ return;
+ }
+ if (!st_validate_attachment(screen,
+ &fb->Attachment[BUFFER_STENCIL],
+ PIPE_TEXTURE_USAGE_DEPTH_STENCIL)) {
+ fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
+ return;
+ }
+ for (i = 0; i < ctx->Const.MaxColorAttachments; i++) {
+ if (!st_validate_attachment(screen,
+ &fb->Attachment[BUFFER_COLOR0 + i],
+ PIPE_TEXTURE_USAGE_RENDER_TARGET)) {
+ fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
+ return;
+ }
}
}
+/**
+ * Copy back color buffer to front color buffer.
+ */
+static void
+copy_back_to_front(struct st_context *st,
+ struct gl_framebuffer *fb,
+ gl_buffer_index frontIndex,
+ gl_buffer_index backIndex)
+
+{
+ struct st_framebuffer *stfb = (struct st_framebuffer *) fb;
+ struct pipe_surface *surf_front, *surf_back;
+
+ (void) st_get_framebuffer_surface(stfb, frontIndex, &surf_front);
+ (void) st_get_framebuffer_surface(stfb, backIndex, &surf_back);
+
+ if (surf_front && surf_back) {
+ st->pipe->surface_copy(st->pipe,
+ surf_front, 0, 0, /* dest */
+ surf_back, 0, 0, /* src */
+ fb->Width, fb->Height);
+ }
+}
+
+
+/**
+ * Check if we're drawing into, or read from, a front color buffer. If the
+ * front buffer is missing, create it now.
+ *
+ * The back color buffer must exist since we'll use its format/samples info
+ * for creating the front buffer.
+ *
+ * \param frontIndex either BUFFER_FRONT_LEFT or BUFFER_FRONT_RIGHT
+ * \param backIndex either BUFFER_BACK_LEFT or BUFFER_BACK_RIGHT
+ */
+static void
+check_create_front_buffer(GLcontext *ctx, struct gl_framebuffer *fb,
+ gl_buffer_index frontIndex,
+ gl_buffer_index backIndex)
+{
+ if (fb->Attachment[frontIndex].Renderbuffer == NULL) {
+ GLboolean create = GL_FALSE;
+
+ /* check if drawing to or reading from front buffer */
+ if (fb->_ColorReadBufferIndex == frontIndex) {
+ create = GL_TRUE;
+ }
+ else {
+ GLuint b;
+ for (b = 0; b < fb->_NumColorDrawBuffers; b++) {
+ if (fb->_ColorDrawBufferIndexes[b] == frontIndex) {
+ create = GL_TRUE;
+ break;
+ }
+ }
+ }
+
+ if (create) {
+ struct st_renderbuffer *back;
+ struct gl_renderbuffer *front;
+ enum pipe_format colorFormat;
+ uint samples;
+
+ if (0)
+ _mesa_debug(ctx, "Allocate new front buffer\n");
+
+ /* get back renderbuffer info */
+ back = st_renderbuffer(fb->Attachment[backIndex].Renderbuffer);
+ colorFormat = back->format;
+ samples = back->Base.NumSamples;
+
+ /* create front renderbuffer */
+ front = st_new_renderbuffer_fb(colorFormat, samples, FALSE);
+ _mesa_add_renderbuffer(fb, frontIndex, front);
+
+ /* alloc texture/surface for new front buffer */
+ front->AllocStorage(ctx, front, front->InternalFormat,
+ fb->Width, fb->Height);
+
+ /* initialize the front color buffer contents by copying
+ * the back buffer.
+ */
+ copy_back_to_front(ctx->st, fb, frontIndex, backIndex);
+ }
+ }
+}
+
+
+/**
+ * If front left/right color buffers are missing, create them now.
+ */
+static void
+check_create_front_buffers(GLcontext *ctx, struct gl_framebuffer *fb)
+{
+ /* check if we need to create the front left buffer now */
+ check_create_front_buffer(ctx, fb, BUFFER_FRONT_LEFT, BUFFER_BACK_LEFT);
+
+ if (fb->Visual.stereoMode) {
+ check_create_front_buffer(ctx, fb, BUFFER_FRONT_RIGHT, BUFFER_BACK_RIGHT);
+ }
+
+ st_invalidate_state(ctx, _NEW_BUFFERS);
+}
+
+
+/**
+ * Called via glDrawBuffer.
+ */
+static void
+st_DrawBuffers(GLcontext *ctx, GLsizei count, const GLenum *buffers)
+{
+ (void) count;
+ (void) buffers;
+ check_create_front_buffers(ctx, ctx->DrawBuffer);
+}
+
+
+/**
+ * Called via glReadBuffer.
+ */
+static void
+st_ReadBuffer(GLcontext *ctx, GLenum buffer)
+{
+ (void) buffer;
+ check_create_front_buffers(ctx, ctx->ReadBuffer);
+}
+
+
void st_init_fbo_functions(struct dd_function_table *functions)
{
functions->NewFramebuffer = st_new_framebuffer;
/* no longer needed by core Mesa, drivers handle resizes...
functions->ResizeBuffers = st_resize_buffers;
*/
+
+ functions->DrawBuffers = st_DrawBuffers;
+ functions->ReadBuffer = st_ReadBuffer;
}
projects / mesa.git / blobdiff