mask |= BUFFER_BIT_FRONT_RIGHT;
break;
case GL_BACK:
+ /* For GLES contexts with a single buffered configuration, we actually
+ * only have a front renderbuffer, so any clear calls to GL_BACK should
+ * affect that buffer. See draw_buffer_enum_to_bitmask for details.
+ */
+ if (_mesa_is_gles(ctx))
+ if (!ctx->DrawBuffer->Visual.doubleBufferMode)
+ if (att[BUFFER_FRONT_LEFT].Renderbuffer)
+ mask |= BUFFER_BIT_FRONT_LEFT;
if (att[BUFFER_BACK_LEFT].Renderbuffer)
mask |= BUFFER_BIT_BACK_LEFT;
if (att[BUFFER_BACK_RIGHT].Renderbuffer)
}
}
break;
- case GL_DEPTH:
- /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
- *
- * "The result of ClearBuffer is undefined if no conversion between
- * the type of the specified value and the type of the buffer being
- * cleared is defined (for example, if ClearBufferiv is called for a
- * fixed- or floating-point buffer, or if ClearBufferfv is called
- * for a signed or unsigned integer buffer). This is not an error."
+ default:
+ /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
+ * of the OpenGL 4.5 spec states:
*
- * In this case we take "undefined" and "not an error" to mean "ignore."
- * Note that we still need to generate an error for the invalid
- * drawbuffer case (see the GL_STENCIL case above).
+ * "An INVALID_ENUM error is generated by ClearBufferiv and
+ * ClearNamedFramebufferiv if buffer is not COLOR or STENCIL."
*/
- if (drawbuffer != 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferiv(drawbuffer=%d)",
- drawbuffer);
- return;
- }
- return;
- default:
_mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferiv(buffer=%s)",
- _mesa_lookup_enum_by_nr(buffer));
+ _mesa_enum_to_string(buffer));
return;
}
}
}
}
break;
- case GL_DEPTH:
- case GL_STENCIL:
- /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
- *
- * "The result of ClearBuffer is undefined if no conversion between
- * the type of the specified value and the type of the buffer being
- * cleared is defined (for example, if ClearBufferiv is called for a
- * fixed- or floating-point buffer, or if ClearBufferfv is called
- * for a signed or unsigned integer buffer). This is not an error."
- *
- * In this case we take "undefined" and "not an error" to mean "ignore."
- * Even though we could do something sensible for GL_STENCIL, page 263
- * (page 279 of the PDF) says:
- *
- * "Only ClearBufferiv should be used to clear stencil buffers."
+ default:
+ /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
+ * of the OpenGL 4.5 spec states:
*
- * Note that we still need to generate an error for the invalid
- * drawbuffer case (see the GL_STENCIL case in _mesa_ClearBufferiv).
+ * "An INVALID_ENUM error is generated by ClearBufferuiv and
+ * ClearNamedFramebufferuiv if buffer is not COLOR."
*/
- if (drawbuffer != 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferuiv(drawbuffer=%d)",
- drawbuffer);
- return;
- }
- return;
- default:
_mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferuiv(buffer=%s)",
- _mesa_lookup_enum_by_nr(buffer));
+ _mesa_enum_to_string(buffer));
return;
}
}
+/**
+ * The ClearBuffer framework is so complicated and so riddled with the
+ * assumption that the framebuffer is bound that, for now, we will just fake
+ * direct state access clearing for the user.
+ */
+void GLAPIENTRY
+_mesa_ClearNamedFramebufferuiv(GLuint framebuffer, GLenum buffer,
+ GLint drawbuffer, const GLuint *value)
+{
+ GLint oldfb;
+
+ _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldfb);
+ _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer);
+ _mesa_ClearBufferuiv(buffer, drawbuffer, value);
+ _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, (GLuint) oldfb);
+}
+
+
/**
* New in GL 3.0
* Clear fixed-pt or float color buffer or depth buffer (not stencil).
}
}
break;
- case GL_STENCIL:
- /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
- *
- * "The result of ClearBuffer is undefined if no conversion between
- * the type of the specified value and the type of the buffer being
- * cleared is defined (for example, if ClearBufferiv is called for a
- * fixed- or floating-point buffer, or if ClearBufferfv is called
- * for a signed or unsigned integer buffer). This is not an error."
+ default:
+ /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
+ * of the OpenGL 4.5 spec states:
*
- * In this case we take "undefined" and "not an error" to mean "ignore."
- * Note that we still need to generate an error for the invalid
- * drawbuffer case (see the GL_DEPTH case above).
+ * "An INVALID_ENUM error is generated by ClearBufferfv and
+ * ClearNamedFramebufferfv if buffer is not COLOR or DEPTH."
*/
- if (drawbuffer != 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferfv(drawbuffer=%d)",
- drawbuffer);
- return;
- }
- return;
- default:
_mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferfv(buffer=%s)",
- _mesa_lookup_enum_by_nr(buffer));
+ _mesa_enum_to_string(buffer));
return;
}
}
+/**
+ * The ClearBuffer framework is so complicated and so riddled with the
+ * assumption that the framebuffer is bound that, for now, we will just fake
+ * direct state access clearing for the user.
+ */
+void GLAPIENTRY
+_mesa_ClearNamedFramebufferfv(GLuint framebuffer, GLenum buffer,
+ GLint drawbuffer, const GLfloat *value)
+{
+ GLint oldfb;
+
+ _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldfb);
+ _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer);
+ _mesa_ClearBufferfv(buffer, drawbuffer, value);
+ _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, (GLuint) oldfb);
+}
+
+
/**
* New in GL 3.0
* Clear depth/stencil buffer only.
if (buffer != GL_DEPTH_STENCIL) {
_mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferfi(buffer=%s)",
- _mesa_lookup_enum_by_nr(buffer));
+ _mesa_enum_to_string(buffer));
return;
}
ctx->Stencil.Clear = clearStencilSave;
}
}
+
+
+/**
+ * The ClearBuffer framework is so complicated and so riddled with the
+ * assumption that the framebuffer is bound that, for now, we will just fake
+ * direct state access clearing for the user.
+ */
+void GLAPIENTRY
+_mesa_ClearNamedFramebufferfi(GLuint framebuffer, GLenum buffer,
+ GLint drawbuffer, GLfloat depth, GLint stencil)
+{
+ GLint oldfb;
+
+ _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldfb);
+ _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer);
+ _mesa_ClearBufferfi(buffer, drawbuffer, depth, stencil);
+ _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, (GLuint) oldfb);
+}
projects / mesa.git / blobdiff