fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
fb->_AllColorBuffersFixedPoint = !visual->floatMode;
fb->_HasSNormOrFloatColorBuffer = visual->floatMode;
+ fb->_HasAttachments = true;
compute_depth_max(fb);
}
* Resize the given framebuffer's renderbuffers to the new width and height.
* This should only be used for window-system framebuffers, not
* user-created renderbuffers (i.e. made with GL_EXT_framebuffer_object).
- * This will typically be called via ctx->Driver.ResizeBuffers() or directly
- * from a device driver.
+ * This will typically be called directly from a device driver.
*
* \note it's possible for ctx to be null since a window can be resized
* without a currently bound rendering context.
if (ctx) {
/* update scissor / window bounds */
- _mesa_update_draw_buffer_bounds(ctx);
+ _mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer);
/* Signal new buffer state so that swrast will update its clipping
* info (the CLIP_BIT flag).
*/
}
+
/**
- * Calculate the inclusive bounding box for the scissor of a specific viewport
+ * Given a bounding box, intersect the bounding box with the scissor of
+ * a specified vieport.
*
* \param ctx GL context.
- * \param buffer Framebuffer to be checked against
* \param idx Index of the desired viewport
* \param bbox Bounding box for the scissored viewport. Stored as xmin,
* xmax, ymin, ymax.
- *
- * \warning This function assumes that the framebuffer dimensions are up to
- * date (e.g., update_framebuffer_size has been recently called on \c buffer).
- *
- * \sa _mesa_clip_to_region
*/
void
-_mesa_scissor_bounding_box(const struct gl_context *ctx,
- const struct gl_framebuffer *buffer,
- unsigned idx, int *bbox)
+_mesa_intersect_scissor_bounding_box(const struct gl_context *ctx,
+ unsigned idx, int *bbox)
{
- bbox[0] = 0;
- bbox[2] = 0;
- bbox[1] = buffer->Width;
- bbox[3] = buffer->Height;
-
if (ctx->Scissor.EnableFlags & (1u << idx)) {
if (ctx->Scissor.ScissorArray[idx].X > bbox[0]) {
bbox[0] = ctx->Scissor.ScissorArray[idx].X;
bbox[2] = bbox[3];
}
}
+}
+
+/**
+ * Calculate the inclusive bounding box for the scissor of a specific viewport
+ *
+ * \param ctx GL context.
+ * \param buffer Framebuffer to be checked against
+ * \param idx Index of the desired viewport
+ * \param bbox Bounding box for the scissored viewport. Stored as xmin,
+ * xmax, ymin, ymax.
+ *
+ * \warning This function assumes that the framebuffer dimensions are up to
+ * date (e.g., update_framebuffer_size has been recently called on \c buffer).
+ *
+ * \sa _mesa_clip_to_region
+ */
+void
+_mesa_scissor_bounding_box(const struct gl_context *ctx,
+ const struct gl_framebuffer *buffer,
+ unsigned idx, int *bbox)
+{
+ bbox[0] = 0;
+ bbox[2] = 0;
+ bbox[1] = buffer->Width;
+ bbox[3] = buffer->Height;
+
+ _mesa_intersect_scissor_bounding_box(ctx, idx, bbox);
assert(bbox[0] <= bbox[1]);
assert(bbox[2] <= bbox[3]);
* \param ctx the GL context.
*/
void
-_mesa_update_draw_buffer_bounds(struct gl_context *ctx)
+_mesa_update_draw_buffer_bounds(struct gl_context *ctx,
+ struct gl_framebuffer *buffer)
{
- struct gl_framebuffer *buffer = ctx->DrawBuffer;
int bbox[4];
if (!buffer)
* context state (GL_READ_BUFFER too).
*/
if (fb->ColorDrawBuffer[0] != ctx->Color.DrawBuffer[0]) {
- _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,
+ _mesa_drawbuffers(ctx, fb, ctx->Const.MaxDrawBuffers,
ctx->Color.DrawBuffer, NULL);
}
}
/**
- * Update state related to the current draw/read framebuffers.
+ * Update state related to the draw/read framebuffers.
*/
void
-_mesa_update_framebuffer(struct gl_context *ctx)
+_mesa_update_framebuffer(struct gl_context *ctx,
+ struct gl_framebuffer *readFb,
+ struct gl_framebuffer *drawFb)
{
- struct gl_framebuffer *drawFb;
- struct gl_framebuffer *readFb;
-
assert(ctx);
- drawFb = ctx->DrawBuffer;
- readFb = ctx->ReadBuffer;
update_framebuffer(ctx, drawFb);
if (readFb != drawFb)
update_framebuffer(ctx, readFb);
- _mesa_update_clamp_vertex_color(ctx);
- _mesa_update_clamp_fragment_color(ctx);
+ _mesa_update_clamp_vertex_color(ctx, drawFb);
+ _mesa_update_clamp_fragment_color(ctx, drawFb);
}
if (format == MESA_FORMAT_B8G8R8A8_UNORM)
return GL_BGRA;
else if (format == MESA_FORMAT_B5G6R5_UNORM)
- return GL_BGR;
+ return GL_RGB;
+ else if (format == MESA_FORMAT_R_UNORM8)
+ return GL_RED;
switch (data_type) {
case GL_UNSIGNED_INT:
const GLenum data_type = _mesa_get_format_datatype(format);
if (format == MESA_FORMAT_B5G6R5_UNORM)
- return GL_UNSIGNED_SHORT_5_6_5_REV;
+ return GL_UNSIGNED_SHORT_5_6_5;
switch (data_type) {
case GL_SIGNED_NORMALIZED:
fprintf(stderr, "Mesa Framebuffer %u at %p\n", fb->Name, (void *) fb);
fprintf(stderr, " Size: %u x %u Status: %s\n", fb->Width, fb->Height,
- _mesa_lookup_enum_by_nr(fb->_Status));
+ _mesa_enum_to_string(fb->_Status));
fprintf(stderr, " Attachments:\n");
for (i = 0; i < BUFFER_COUNT; i++) {
}
}
}
+
+bool
+_mesa_is_front_buffer_reading(const struct gl_framebuffer *fb)
+{
+ if (!fb || _mesa_is_user_fbo(fb))
+ return false;
+
+ return fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT;
+}
+
+bool
+_mesa_is_front_buffer_drawing(const struct gl_framebuffer *fb)
+{
+ if (!fb || _mesa_is_user_fbo(fb))
+ return false;
+
+ return (fb->_NumColorDrawBuffers >= 1 &&
+ fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT);
+}
+
+static inline GLuint
+_mesa_geometric_nonvalidated_samples(const struct gl_framebuffer *buffer)
+{
+ return buffer->_HasAttachments ?
+ buffer->Visual.samples :
+ buffer->DefaultGeometry.NumSamples;
+}
+
+bool _mesa_is_multisample_enabled(const struct gl_context *ctx)
+{
+ /* The sample count may not be validated by the driver, but when it is set,
+ * we know that is in a valid range and no driver should ever validate a
+ * multisampled framebuffer to non-multisampled and vice-versa.
+ */
+ return ctx->Multisample.Enabled &&
+ ctx->DrawBuffer &&
+ _mesa_geometric_nonvalidated_samples(ctx->DrawBuffer) > 1;
+}
projects / mesa.git / blobdiff