#include "util/u_math.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
+#include "util/u_framebuffer.h"
+#include "main/framebuffer.h"
/**
struct pipe_surface *surface)
{
assert(surface);
- assert(surface->width < UINT_MAX);
- assert(surface->height < UINT_MAX);
+ assert(surface->width < USHRT_MAX);
+ assert(surface->height < USHRT_MAX);
framebuffer->width = MIN2(framebuffer->width, surface->width);
framebuffer->height = MIN2(framebuffer->height, surface->height);
}
+/**
+ * Round up the requested multisample count to the next supported sample size.
+ */
+static unsigned
+framebuffer_quantize_num_samples(struct st_context *st, unsigned num_samples)
+{
+ struct pipe_screen *screen = st->pipe->screen;
+ int quantized_samples = 0;
+ unsigned msaa_mode;
+
+ if (!num_samples)
+ return 0;
+
+ /* Assumes the highest supported MSAA is a power of 2 */
+ msaa_mode = util_next_power_of_two(st->ctx->Const.MaxFramebufferSamples);
+ assert(!(num_samples > msaa_mode)); /* be safe from infinite loops */
+
+ /**
+ * Check if the MSAA mode that is higher than the requested
+ * num_samples is supported, and if so returning it.
+ */
+ for (; msaa_mode >= num_samples; msaa_mode = msaa_mode / 2) {
+ /**
+ * For ARB_framebuffer_no_attachment, A format of
+ * PIPE_FORMAT_NONE implies what number of samples is
+ * supported for a framebuffer with no attachment. Thus the
+ * drivers callback must be adjusted for this.
+ */
+ if (screen->is_format_supported(screen, PIPE_FORMAT_NONE,
+ PIPE_TEXTURE_2D, msaa_mode,
+ PIPE_BIND_RENDER_TARGET))
+ quantized_samples = msaa_mode;
+ }
+ return quantized_samples;
+}
/**
* Update framebuffer state (color, depth, stencil, etc. buffers)
*/
-static void
-update_framebuffer_state( struct st_context *st )
+void
+st_update_framebuffer_state( struct st_context *st )
{
- struct pipe_framebuffer_state *framebuffer = &st->state.framebuffer;
+ struct pipe_framebuffer_state framebuffer;
struct gl_framebuffer *fb = st->ctx->DrawBuffer;
struct st_renderbuffer *strb;
GLuint i;
st_flush_bitmap_cache(st);
+ st_invalidate_readpix_cache(st);
st->state.fb_orientation = st_fb_orientation(fb);
- framebuffer->width = UINT_MAX;
- framebuffer->height = UINT_MAX;
- /*printf("------ fb size %d x %d\n", fb->Width, fb->Height);*/
+ /**
+ * Quantize the derived default number of samples:
+ *
+ * A query to the driver of supported MSAA values the
+ * hardware supports is done as to legalize the number
+ * of application requested samples, NumSamples.
+ * See commit eb9cf3c for more information.
+ */
+ fb->DefaultGeometry._NumSamples =
+ framebuffer_quantize_num_samples(st, fb->DefaultGeometry.NumSamples);
+
+ framebuffer.width = _mesa_geometric_width(fb);
+ framebuffer.height = _mesa_geometric_height(fb);
+ framebuffer.samples = _mesa_geometric_samples(fb);
+ framebuffer.layers = _mesa_geometric_layers(fb);
/* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
* to determine which surfaces to draw to
*/
- framebuffer->nr_cbufs = fb->_NumColorDrawBuffers;
+ framebuffer.nr_cbufs = fb->_NumColorDrawBuffers;
for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
- pipe_surface_reference(&framebuffer->cbufs[i], NULL);
-
+ framebuffer.cbufs[i] = NULL;
strb = st_renderbuffer(fb->_ColorDrawBuffers[i]);
if (strb) {
}
if (strb->surface) {
- pipe_surface_reference(&framebuffer->cbufs[i], strb->surface);
- update_framebuffer_size(framebuffer, strb->surface);
+ framebuffer.cbufs[i] = strb->surface;
+ update_framebuffer_size(&framebuffer, strb->surface);
}
strb->defined = GL_TRUE; /* we'll be drawing something */
}
}
- for (i = framebuffer->nr_cbufs; i < PIPE_MAX_COLOR_BUFS; i++) {
- pipe_surface_reference(&framebuffer->cbufs[i], NULL);
+ for (i = framebuffer.nr_cbufs; i < PIPE_MAX_COLOR_BUFS; i++) {
+ framebuffer.cbufs[i] = NULL;
+ }
+
+ /* Remove trailing GL_NONE draw buffers. */
+ while (framebuffer.nr_cbufs &&
+ !framebuffer.cbufs[framebuffer.nr_cbufs-1]) {
+ framebuffer.nr_cbufs--;
}
/*
/* rendering to a GL texture, may have to update surface */
st_update_renderbuffer_surface(st, strb);
}
- pipe_surface_reference(&framebuffer->zsbuf, strb->surface);
- update_framebuffer_size(framebuffer, strb->surface);
+ framebuffer.zsbuf = strb->surface;
+ update_framebuffer_size(&framebuffer, strb->surface);
}
else {
strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
if (strb) {
- assert(strb->surface);
- pipe_surface_reference(&framebuffer->zsbuf, strb->surface);
- update_framebuffer_size(framebuffer, strb->surface);
+ if (strb->is_rtt) {
+ /* rendering to a GL texture, may have to update surface */
+ st_update_renderbuffer_surface(st, strb);
+ }
+ framebuffer.zsbuf = strb->surface;
+ update_framebuffer_size(&framebuffer, strb->surface);
}
else
- pipe_surface_reference(&framebuffer->zsbuf, NULL);
+ framebuffer.zsbuf = NULL;
}
#ifdef DEBUG
/* Make sure the resource binding flags were set properly */
- for (i = 0; i < framebuffer->nr_cbufs; i++) {
- assert(!framebuffer->cbufs[i] ||
- framebuffer->cbufs[i]->texture->bind & PIPE_BIND_RENDER_TARGET);
+ for (i = 0; i < framebuffer.nr_cbufs; i++) {
+ assert(!framebuffer.cbufs[i] ||
+ framebuffer.cbufs[i]->texture->bind & PIPE_BIND_RENDER_TARGET);
}
- if (framebuffer->zsbuf) {
- assert(framebuffer->zsbuf->texture->bind & PIPE_BIND_DEPTH_STENCIL);
+ if (framebuffer.zsbuf) {
+ assert(framebuffer.zsbuf->texture->bind & PIPE_BIND_DEPTH_STENCIL);
}
#endif
- if (framebuffer->width == UINT_MAX)
- framebuffer->width = 0;
- if (framebuffer->height == UINT_MAX)
- framebuffer->height = 0;
-
- cso_set_framebuffer(st->cso_context, framebuffer);
-}
+ if (framebuffer.width == USHRT_MAX)
+ framebuffer.width = 0;
+ if (framebuffer.height == USHRT_MAX)
+ framebuffer.height = 0;
+ cso_set_framebuffer(st->cso_context, &framebuffer);
-const struct st_tracked_state st_update_framebuffer = {
- "st_update_framebuffer", /* name */
- { /* dirty */
- _NEW_BUFFERS, /* mesa */
- ST_NEW_FRAMEBUFFER, /* st */
- },
- update_framebuffer_state /* update */
-};
-
+ st->state.fb_width = framebuffer.width;
+ st->state.fb_height = framebuffer.height;
+ st->state.fb_num_samples = util_framebuffer_get_num_samples(&framebuffer);
+ st->state.fb_num_layers = util_framebuffer_get_num_layers(&framebuffer);
+}
projects / mesa.git / blobdiff