#include "clear.h"
#include "context.h"
#include "enums.h"
+#include "fbobject.h"
+#include "get.h"
#include "macros.h"
#include "mtypes.h"
#include "state.h"
{
struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[idx];
GLuint c;
- GLubyte colorMask = 0;
if (rb) {
for (c = 0; c < 4; c++) {
- if (_mesa_format_has_color_component(rb->Format, c))
- colorMask |= ctx->Color.ColorMask[idx][c];
+ if (GET_COLORMASK_BIT(ctx->Color.ColorMask, idx, c) &&
+ _mesa_format_has_color_component(rb->Format, c)) {
+ return true;
+ }
}
}
- return colorMask != 0;
+ return false;
}
* GL_RENDER then requests the driver to clear the buffers, via the
* dd_function_table::Clear callback.
*/
-void GLAPIENTRY
-_mesa_Clear( GLbitfield mask )
+static ALWAYS_INLINE void
+clear(struct gl_context *ctx, GLbitfield mask, bool no_error)
{
- GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
-
FLUSH_CURRENT(ctx, 0);
- if (MESA_VERBOSE & VERBOSE_API)
- _mesa_debug(ctx, "glClear 0x%x\n", mask);
-
- if (mask & ~(GL_COLOR_BUFFER_BIT |
- GL_DEPTH_BUFFER_BIT |
- GL_STENCIL_BUFFER_BIT |
- GL_ACCUM_BUFFER_BIT)) {
- /* invalid bit set */
- _mesa_error( ctx, GL_INVALID_VALUE, "glClear(0x%x)", mask);
- return;
- }
+ if (!no_error) {
+ if (mask & ~(GL_COLOR_BUFFER_BIT |
+ GL_DEPTH_BUFFER_BIT |
+ GL_STENCIL_BUFFER_BIT |
+ GL_ACCUM_BUFFER_BIT)) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glClear(0x%x)", mask);
+ return;
+ }
- /* Accumulation buffers were removed in core contexts, and they never
- * existed in OpenGL ES.
- */
- if ((mask & GL_ACCUM_BUFFER_BIT) != 0
- && (ctx->API == API_OPENGL_CORE || _mesa_is_gles(ctx))) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glClear(GL_ACCUM_BUFFER_BIT)");
- return;
+ /* Accumulation buffers were removed in core contexts, and they never
+ * existed in OpenGL ES.
+ */
+ if ((mask & GL_ACCUM_BUFFER_BIT) != 0
+ && (ctx->API == API_OPENGL_CORE || _mesa_is_gles(ctx))) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glClear(GL_ACCUM_BUFFER_BIT)");
+ return;
+ }
}
if (ctx->NewState) {
_mesa_update_state( ctx ); /* update _Xmin, etc */
}
- if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ if (!no_error && ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
"glClear(incomplete framebuffer)");
return;
if (mask & GL_COLOR_BUFFER_BIT) {
GLuint i;
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
- GLint buf = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
+ gl_buffer_index buf = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
- if (buf >= 0 && color_buffer_writes_enabled(ctx, i)) {
+ if (buf != BUFFER_NONE && color_buffer_writes_enabled(ctx, i)) {
bufferMask |= 1 << buf;
}
}
bufferMask |= BUFFER_BIT_ACCUM;
}
- ASSERT(ctx->Driver.Clear);
+ assert(ctx->Driver.Clear);
ctx->Driver.Clear(ctx, bufferMask);
}
}
+void GLAPIENTRY
+_mesa_Clear_no_error(GLbitfield mask)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear(ctx, mask, true);
+}
+
+
+void GLAPIENTRY
+_mesa_Clear(GLbitfield mask)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glClear 0x%x\n", mask);
+
+ clear(ctx, mask, false);
+}
+
+
/** Returned by make_color_buffer_mask() for errors */
-#define INVALID_MASK ~0x0
+#define INVALID_MASK ~0x0U
/**
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;
default:
{
- GLint buf = ctx->DrawBuffer->_ColorDrawBufferIndexes[drawbuffer];
+ gl_buffer_index buf =
+ ctx->DrawBuffer->_ColorDrawBufferIndexes[drawbuffer];
- if (buf >= 0 && att[buf].Renderbuffer) {
+ if (buf != BUFFER_NONE && att[buf].Renderbuffer) {
mask |= 1 << buf;
}
}
* New in GL 3.0
* Clear signed integer color buffer or stencil buffer (not depth).
*/
-void GLAPIENTRY
-_mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
+static ALWAYS_INLINE void
+clear_bufferiv(struct gl_context *ctx, GLenum buffer, GLint drawbuffer,
+ const GLint *value, bool no_error)
{
- GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
-
FLUSH_CURRENT(ctx, 0);
if (ctx->NewState) {
* value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
* STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
*/
- if (drawbuffer != 0) {
+ if (!no_error && drawbuffer != 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferiv(drawbuffer=%d)",
drawbuffer);
return;
case GL_COLOR:
{
const GLbitfield mask = make_color_buffer_mask(ctx, drawbuffer);
- if (mask == INVALID_MASK) {
+ if (!no_error && mask == INVALID_MASK) {
_mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferiv(drawbuffer=%d)",
drawbuffer);
return;
}
}
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."
- *
- * 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).
- */
- 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));
+ if (!no_error) {
+ /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
+ * of the OpenGL 4.5 spec states:
+ *
+ * "An INVALID_ENUM error is generated by ClearBufferiv and
+ * ClearNamedFramebufferiv if buffer is not COLOR or STENCIL."
+ */
+ _mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferiv(buffer=%s)",
+ _mesa_enum_to_string(buffer));
+ }
return;
}
}
+void GLAPIENTRY
+_mesa_ClearBufferiv_no_error(GLenum buffer, GLint drawbuffer, const GLint *value)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear_bufferiv(ctx, buffer, drawbuffer, value, true);
+}
+
+
+void GLAPIENTRY
+_mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear_bufferiv(ctx, buffer, drawbuffer, value, false);
+}
+
+
/**
- * New in GL 3.0
- * Clear unsigned integer color buffer (not depth, not stencil).
+ * 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_ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint *value)
+_mesa_ClearNamedFramebufferiv(GLuint framebuffer, GLenum buffer,
+ GLint drawbuffer, const GLint *value)
{
- GET_CURRENT_CONTEXT(ctx);
+ GLint oldfb;
+ _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldfb);
+ _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer);
+ _mesa_ClearBufferiv(buffer, drawbuffer, value);
+ _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, (GLuint) oldfb);
+}
+
+
+/**
+ * New in GL 3.0
+ * Clear unsigned integer color buffer (not depth, not stencil).
+ */
+static ALWAYS_INLINE void
+clear_bufferuiv(struct gl_context *ctx, GLenum buffer, GLint drawbuffer,
+ const GLuint *value, bool no_error)
+{
FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
case GL_COLOR:
{
const GLbitfield mask = make_color_buffer_mask(ctx, drawbuffer);
- if (mask == INVALID_MASK) {
+ if (!no_error && mask == INVALID_MASK) {
_mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferuiv(drawbuffer=%d)",
drawbuffer);
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."
- *
- * Note that we still need to generate an error for the invalid
- * drawbuffer case (see the GL_STENCIL case in _mesa_ClearBufferiv).
- */
- 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));
+ if (!no_error) {
+ /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
+ * of the OpenGL 4.5 spec states:
+ *
+ * "An INVALID_ENUM error is generated by ClearBufferuiv and
+ * ClearNamedFramebufferuiv if buffer is not COLOR."
+ */
+ _mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferuiv(buffer=%s)",
+ _mesa_enum_to_string(buffer));
+ }
return;
}
}
+void GLAPIENTRY
+_mesa_ClearBufferuiv_no_error(GLenum buffer, GLint drawbuffer,
+ const GLuint *value)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear_bufferuiv(ctx, buffer, drawbuffer, value, true);
+}
+
+
+void GLAPIENTRY
+_mesa_ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint *value)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear_bufferuiv(ctx, buffer, drawbuffer, value, false);
+}
+
+
/**
- * New in GL 3.0
- * Clear fixed-pt or float color buffer or depth buffer (not stencil).
+ * 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_ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat *value)
+_mesa_ClearNamedFramebufferuiv(GLuint framebuffer, GLenum buffer,
+ GLint drawbuffer, const GLuint *value)
{
- GET_CURRENT_CONTEXT(ctx);
+ 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).
+ */
+static ALWAYS_INLINE void
+clear_bufferfv(struct gl_context *ctx, GLenum buffer, GLint drawbuffer,
+ const GLfloat *value, bool no_error)
+{
FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
* value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
* STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
*/
- if (drawbuffer != 0) {
+ if (!no_error && drawbuffer != 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferfv(drawbuffer=%d)",
drawbuffer);
return;
case GL_COLOR:
{
const GLbitfield mask = make_color_buffer_mask(ctx, drawbuffer);
- if (mask == INVALID_MASK) {
+ if (!no_error && mask == INVALID_MASK) {
_mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferfv(drawbuffer=%d)",
drawbuffer);
return;
}
}
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."
- *
- * 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).
- */
- 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));
+ if (!no_error) {
+ /* Page 498 of the PDF, section '17.4.3.1 Clearing Individual Buffers'
+ * of the OpenGL 4.5 spec states:
+ *
+ * "An INVALID_ENUM error is generated by ClearBufferfv and
+ * ClearNamedFramebufferfv if buffer is not COLOR or DEPTH."
+ */
+ _mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferfv(buffer=%s)",
+ _mesa_enum_to_string(buffer));
+ }
return;
}
}
+void GLAPIENTRY
+_mesa_ClearBufferfv_no_error(GLenum buffer, GLint drawbuffer,
+ const GLfloat *value)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear_bufferfv(ctx, buffer, drawbuffer, value, true);
+}
+
+
+void GLAPIENTRY
+_mesa_ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat *value)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear_bufferfv(ctx, buffer, drawbuffer, value, false);
+}
+
+
+/**
+ * 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.
*/
-void GLAPIENTRY
-_mesa_ClearBufferfi(GLenum buffer, GLint drawbuffer,
- GLfloat depth, GLint stencil)
+static ALWAYS_INLINE void
+clear_bufferfi(struct gl_context *ctx, GLenum buffer, GLint drawbuffer,
+ GLfloat depth, GLint stencil, bool no_error)
{
- GET_CURRENT_CONTEXT(ctx);
GLbitfield mask = 0;
FLUSH_VERTICES(ctx, 0);
FLUSH_CURRENT(ctx, 0);
- if (buffer != GL_DEPTH_STENCIL) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferfi(buffer=%s)",
- _mesa_lookup_enum_by_nr(buffer));
- return;
- }
+ if (!no_error) {
+ if (buffer != GL_DEPTH_STENCIL) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glClearBufferfi(buffer=%s)",
+ _mesa_enum_to_string(buffer));
+ return;
+ }
- /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
- *
- * "ClearBuffer generates an INVALID VALUE error if buffer is
- * COLOR and drawbuffer is less than zero, or greater than the
- * value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
- * STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
- */
- if (drawbuffer != 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferfi(drawbuffer=%d)",
- drawbuffer);
- return;
+ /* Page 264 (page 280 of the PDF) of the OpenGL 3.0 spec says:
+ *
+ * "ClearBuffer generates an INVALID VALUE error if buffer is
+ * COLOR and drawbuffer is less than zero, or greater than the
+ * value of MAX DRAW BUFFERS minus one; or if buffer is DEPTH,
+ * STENCIL, or DEPTH STENCIL and drawbuffer is not zero."
+ */
+ if (drawbuffer != 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glClearBufferfi(drawbuffer=%d)",
+ drawbuffer);
+ return;
+ }
}
if (ctx->RasterDiscard)
ctx->Stencil.Clear = clearStencilSave;
}
}
+
+
+void GLAPIENTRY
+_mesa_ClearBufferfi_no_error(GLenum buffer, GLint drawbuffer,
+ GLfloat depth, GLint stencil)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear_bufferfi(ctx, buffer, drawbuffer, depth, stencil, true);
+}
+
+
+void GLAPIENTRY
+_mesa_ClearBufferfi(GLenum buffer, GLint drawbuffer,
+ GLfloat depth, GLint stencil)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ clear_bufferfi(ctx, buffer, drawbuffer, depth, stencil, false);
+}
+
+
+/**
+ * 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);
+}