Mesa (master): PATCH 03/10] mesa: Complete ARB_framebuffer_no_attachments in Mesa core
Martin Peres
mperes at kemper.freedesktop.org
Wed Jun 17 12:48:24 UTC 2015
Module: Mesa
Branch: master
Commit: 6aa12994bdf0068a9804204a8f1b197cc0f46ec6
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=6aa12994bdf0068a9804204a8f1b197cc0f46ec6
Author: Kevin Rogovin <kevin.rogovin at intel.com>
Date: Wed Jun 17 13:29:52 2015 +0300
PATCH 03/10] mesa: Complete ARB_framebuffer_no_attachments in Mesa core
Implement GL_ARB_framebuffer_no_attachments in Mesa core
- changes to conditions for framebuffer completenss
- implement set/get functions for framebuffers for
new functions in GL_ARB_framebuffer_no_attachments
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
Signed-off-by: Kevin Rogovin <kevin.rogovin at intel.com>
---
src/mesa/main/fbobject.c | 211 +++++++++++++++++++++++++++++++++++++++-------
1 file changed, 182 insertions(+), 29 deletions(-)
diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index 6d75209..f8dcf12 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -1156,14 +1156,48 @@ _mesa_test_framebuffer_completeness(struct gl_context *ctx,
} else if (att_layer_count > max_layer_count) {
max_layer_count = att_layer_count;
}
+
+ /*
+ * The extension GL_ARB_framebuffer_no_attachments places additional
+ * requirement on each attachment. Those additional requirements are
+ * tighter that those of previous versions of GL. In interest of better
+ * compatibility, we will not enforce these restrictions. For the record
+ * those additional restrictions are quoted below:
+ *
+ * "The width and height of image are greater than zero and less than or
+ * equal to the values of the implementation-dependent limits
+ * MAX_FRAMEBUFFER_WIDTH and MAX_FRAMEBUFFER_HEIGHT, respectively."
+ *
+ * "If <image> is a three-dimensional texture or a one- or two-dimensional
+ * array texture and the attachment is layered, the depth or layer count
+ * of the texture is less than or equal to the implementation-dependent
+ * limit MAX_FRAMEBUFFER_LAYERS."
+ *
+ * "If image has multiple samples, its sample count is less than or equal
+ * to the value of the implementation-dependent limit
+ * MAX_FRAMEBUFFER_SAMPLES."
+ *
+ * The same requirements are also in place for GL 4.5,
+ * Section 9.4.1 "Framebuffer Attachment Completeness", pg 310-311
+ */
}
fb->MaxNumLayers = max_layer_count;
if (numImages == 0) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
- fbo_incomplete(ctx, "no attachments", -1);
- return;
+ fb->_HasAttachments = false;
+
+ if (!ctx->Extensions.ARB_framebuffer_no_attachments) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
+ fbo_incomplete(ctx, "no attachments", -1);
+ return;
+ }
+
+ if (fb->DefaultGeometry.Width == 0 || fb->DefaultGeometry.Height == 0) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
+ fbo_incomplete(ctx, "no attachments and default width or height is 0", -1);
+ return;
+ }
}
if (_mesa_is_desktop_gl(ctx) && !ctx->Extensions.ARB_ES2_compatibility) {
@@ -1228,8 +1262,10 @@ _mesa_test_framebuffer_completeness(struct gl_context *ctx,
* renderbuffers/textures are different sizes, the framebuffer
* width/height will be set to the smallest width/height.
*/
- fb->Width = minWidth;
- fb->Height = minHeight;
+ if (numImages != 0) {
+ fb->Width = minWidth;
+ fb->Height = minHeight;
+ }
/* finally, update the visual info for the framebuffer */
_mesa_update_framebuffer_visual(ctx, fb);
@@ -1335,32 +1371,129 @@ _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
bind_renderbuffer(target, renderbuffer, true);
}
+static void
+framebuffer_parameteri(struct gl_context *ctx, struct gl_framebuffer *fb,
+ GLenum pname, GLint param, const char *func)
+{
+ switch (pname) {
+ case GL_FRAMEBUFFER_DEFAULT_WIDTH:
+ if (param < 0 || param > ctx->Const.MaxFramebufferWidth)
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s", func);
+ else
+ fb->DefaultGeometry.Width = param;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_HEIGHT:
+ if (param < 0 || param > ctx->Const.MaxFramebufferHeight)
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s", func);
+ else
+ fb->DefaultGeometry.Height = param;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_LAYERS:
+ if (param < 0 || param > ctx->Const.MaxFramebufferLayers)
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s", func);
+ else
+ fb->DefaultGeometry.Layers = param;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_SAMPLES:
+ if (param < 0 || param > ctx->Const.MaxFramebufferSamples)
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s", func);
+ else
+ fb->DefaultGeometry.NumSamples = param;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS:
+ fb->DefaultGeometry.FixedSampleLocations = param;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "%s(pname=0x%x)", func, pname);
+ }
+}
+
void GLAPIENTRY
_mesa_FramebufferParameteri(GLenum target, GLenum pname, GLint param)
{
GET_CURRENT_CONTEXT(ctx);
+ struct gl_framebuffer *fb;
+
+ if (!ctx->Extensions.ARB_framebuffer_no_attachments) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferParameteriv not supported "
+ "(ARB_framebuffer_no_attachments not implemented)");
+ return;
+ }
+
+ fb = get_framebuffer_target(ctx, target);
+ if (!fb) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glFramebufferParameteri(target=0x%x)", target);
+ return;
+ }
- (void) target;
- (void) pname;
- (void) param;
+ /* check framebuffer binding */
+ if (_mesa_is_winsys_fbo(fb)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferParameteri");
+ return;
+ }
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferParameteri not supported "
- "(ARB_framebuffer_no_attachments not implemented)");
+ framebuffer_parameteri(ctx, fb, pname, param, "glFramebufferParameteri");
+}
+
+static void
+get_framebuffer_parameteriv(struct gl_context *ctx, struct gl_framebuffer *fb,
+ GLenum pname, GLint *params, const char *func)
+{
+ switch (pname) {
+ case GL_FRAMEBUFFER_DEFAULT_WIDTH:
+ *params = fb->DefaultGeometry.Width;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_HEIGHT:
+ *params = fb->DefaultGeometry.Height;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_LAYERS:
+ *params = fb->DefaultGeometry.Layers;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_SAMPLES:
+ *params = fb->DefaultGeometry.NumSamples;
+ break;
+ case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS:
+ *params = fb->DefaultGeometry.FixedSampleLocations;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "%s(pname=0x%x)", func, pname);
+ }
}
void GLAPIENTRY
_mesa_GetFramebufferParameteriv(GLenum target, GLenum pname, GLint *params)
{
GET_CURRENT_CONTEXT(ctx);
+ struct gl_framebuffer *fb;
- (void) target;
- (void) pname;
- (void) param;
+ if (!ctx->Extensions.ARB_framebuffer_no_attachments) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetFramebufferParameteriv not supported "
+ "(ARB_framebuffer_no_attachments not implemented)");
+ return;
+ }
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetFramebufferParameteriv not supported "
- "(ARB_framebuffer_no_attachments not implemented)");
+ fb = get_framebuffer_target(ctx, target);
+ if (!fb) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferParameteriv(target=0x%x)", target);
+ return;
+ }
+
+ /* check framebuffer binding */
+ if (_mesa_is_winsys_fbo(fb)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetFramebufferParameteriv");
+ return;
+ }
+
+ get_framebuffer_parameteriv(ctx, fb, pname, params,
+ "glGetFramebufferParameteriv");
}
@@ -3704,14 +3837,22 @@ _mesa_NamedFramebufferParameteri(GLuint framebuffer, GLenum pname,
GLint param)
{
GET_CURRENT_CONTEXT(ctx);
+ struct gl_framebuffer *fb = NULL;
+
+ if (!ctx->Extensions.ARB_framebuffer_no_attachments) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glNamedFramebufferParameteri("
+ "ARB_framebuffer_no_attachments not implemented)");
+ return;
+ }
- (void) framebuffer;
- (void) pname;
- (void) param;
+ fb = _mesa_lookup_framebuffer_err(ctx, framebuffer,
+ "glNamedFramebufferParameteri");
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glNamedFramebufferParameteri not supported "
- "(ARB_framebuffer_no_attachments not implemented)");
+ if (fb) {
+ framebuffer_parameteri(ctx, fb, pname, param,
+ "glNamedFramebufferParameteriv");
+ }
}
@@ -3720,14 +3861,26 @@ _mesa_GetNamedFramebufferParameteriv(GLuint framebuffer, GLenum pname,
GLint *param)
{
GET_CURRENT_CONTEXT(ctx);
+ struct gl_framebuffer *fb;
- (void) framebuffer;
- (void) pname;
- (void) param;
+ if (!ctx->Extensions.ARB_framebuffer_no_attachments) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glNamedFramebufferParameteriv("
+ "ARB_framebuffer_no_attachments not implemented)");
+ return;
+ }
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetNamedFramebufferParameteriv not supported "
- "(ARB_framebuffer_no_attachments not implemented)");
+ if (framebuffer) {
+ fb = _mesa_lookup_framebuffer_err(ctx, framebuffer,
+ "glGetNamedFramebufferParameteriv");
+ } else {
+ fb = ctx->WinSysDrawBuffer;
+ }
+
+ if (fb) {
+ get_framebuffer_parameteriv(ctx, fb, pname, param,
+ "glGetNamedFramebufferParameteriv");
+ }
}
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