X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fclear.c;h=a1bb36efe241e0508b6fd09dd917f43501713082;hb=34953f8907fddd0d2b27d276580a1d3223047987;hp=cfb060018c7ca5634e6f946eaad4dd51d156d28c;hpb=cf41d7c63aab2289d739c0f9df116caf2cc410e3;p=mesa.git diff --git a/src/mesa/main/clear.c b/src/mesa/main/clear.c index cfb060018c7..a1bb36efe24 100644 --- a/src/mesa/main/clear.c +++ b/src/mesa/main/clear.c @@ -1,6 +1,5 @@ /* * Mesa 3-D graphics library - * Version: 7.1 * * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. * @@ -17,9 +16,10 @@ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. */ @@ -33,28 +33,22 @@ #include "glheader.h" #include "clear.h" #include "context.h" -#include "colormac.h" #include "enums.h" +#include "fbobject.h" +#include "get.h" #include "macros.h" #include "mtypes.h" #include "state.h" -#if _HAVE_FULL_GL void GLAPIENTRY _mesa_ClearIndex( GLfloat c ) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - if (ctx->Color.ClearIndex == (GLuint) c) - return; - - FLUSH_VERTICES(ctx, _NEW_COLOR); ctx->Color.ClearIndex = (GLuint) c; } -#endif /** @@ -66,28 +60,16 @@ _mesa_ClearIndex( GLfloat c ) * \param alpha alpha component. * * \sa glClearColor(). - * - * Clamps the parameters and updates gl_colorbuffer_attrib::ClearColor. On a - * change, flushes the vertices and notifies the driver via the - * dd_function_table::ClearColor callback. */ void GLAPIENTRY _mesa_ClearColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha ) { - GLfloat tmp[4]; GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - tmp[0] = red; - tmp[1] = green; - tmp[2] = blue; - tmp[3] = alpha; - if (TEST_EQ_4V(tmp, ctx->Color.ClearColor.f)) - return; /* no change */ - - FLUSH_VERTICES(ctx, _NEW_COLOR); - COPY_4V(ctx->Color.ClearColor.f, tmp); + ctx->Color.ClearColor.f[0] = red; + ctx->Color.ClearColor.f[1] = green; + ctx->Color.ClearColor.f[2] = blue; + ctx->Color.ClearColor.f[3] = alpha; } @@ -97,20 +79,12 @@ _mesa_ClearColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha ) void GLAPIENTRY _mesa_ClearColorIiEXT(GLint r, GLint g, GLint b, GLint a) { - GLint tmp[4]; GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - tmp[0] = r; - tmp[1] = g; - tmp[2] = b; - tmp[3] = a; - - if (TEST_EQ_4V(tmp, ctx->Color.ClearColor.i)) - return; /* no change */ - FLUSH_VERTICES(ctx, _NEW_COLOR); - COPY_4V(ctx->Color.ClearColor.i, tmp); + ctx->Color.ClearColor.i[0] = r; + ctx->Color.ClearColor.i[1] = g; + ctx->Color.ClearColor.i[2] = b; + ctx->Color.ClearColor.i[3] = a; } @@ -120,38 +94,56 @@ _mesa_ClearColorIiEXT(GLint r, GLint g, GLint b, GLint a) void GLAPIENTRY _mesa_ClearColorIuiEXT(GLuint r, GLuint g, GLuint b, GLuint a) { - GLuint tmp[4]; GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - tmp[0] = r; - tmp[1] = g; - tmp[2] = b; - tmp[3] = a; + ctx->Color.ClearColor.ui[0] = r; + ctx->Color.ClearColor.ui[1] = g; + ctx->Color.ClearColor.ui[2] = b; + ctx->Color.ClearColor.ui[3] = a; +} + - if (TEST_EQ_4V(tmp, ctx->Color.ClearColor.ui)) - return; /* no change */ +/** + * Returns true if color writes are enabled for the given color attachment. + * + * Beyond checking ColorMask, this uses _mesa_format_has_color_component to + * ignore components that don't actually exist in the format (such as X in + * XRGB). + */ +static bool +color_buffer_writes_enabled(const struct gl_context *ctx, unsigned idx) +{ + 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]; + } + } - FLUSH_VERTICES(ctx, _NEW_COLOR); - COPY_4V(ctx->Color.ClearColor.ui, tmp); + return colorMask != 0; } /** * Clear buffers. - * + * * \param mask bit-mask indicating the buffers to be cleared. * - * Flushes the vertices and verifies the parameter. If __struct gl_contextRec::NewState - * is set then calls _mesa_update_state() to update gl_frame_buffer::_Xmin, - * etc. If the rasterization mode is set to GL_RENDER then requests the driver - * to clear the buffers, via the dd_function_table::Clear callback. - */ + * Flushes the vertices and verifies the parameter. + * If __struct gl_contextRec::NewState is set then calls _mesa_update_state() + * to update gl_frame_buffer::_Xmin, etc. If the rasterization mode is set to + * GL_RENDER then requests the driver to clear the buffers, via the + * dd_function_table::Clear callback. + */ void GLAPIENTRY _mesa_Clear( GLbitfield mask ) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + FLUSH_VERTICES(ctx, 0); FLUSH_CURRENT(ctx, 0); @@ -167,6 +159,15 @@ _mesa_Clear( GLbitfield 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; + } + if (ctx->NewState) { _mesa_update_state( ctx ); /* update _Xmin, etc */ } @@ -177,11 +178,6 @@ _mesa_Clear( GLbitfield mask ) return; } - if (ctx->DrawBuffer->Width == 0 || ctx->DrawBuffer->Height == 0 || - ctx->DrawBuffer->_Xmin >= ctx->DrawBuffer->_Xmax || - ctx->DrawBuffer->_Ymin >= ctx->DrawBuffer->_Ymax) - return; - if (ctx->RasterDiscard) return; @@ -201,7 +197,11 @@ _mesa_Clear( GLbitfield mask ) if (mask & GL_COLOR_BUFFER_BIT) { GLuint i; for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) { - bufferMask |= (1 << ctx->DrawBuffer->_ColorDrawBufferIndexes[i]); + GLint buf = ctx->DrawBuffer->_ColorDrawBufferIndexes[i]; + + if (buf >= 0 && color_buffer_writes_enabled(ctx, i)) { + bufferMask |= 1 << buf; + } } } @@ -220,14 +220,14 @@ _mesa_Clear( GLbitfield mask ) bufferMask |= BUFFER_BIT_ACCUM; } - ASSERT(ctx->Driver.Clear); + assert(ctx->Driver.Clear); ctx->Driver.Clear(ctx, bufferMask); } } /** Returned by make_color_buffer_mask() for errors */ -#define INVALID_MASK ~0x0 +#define INVALID_MASK ~0x0U /** @@ -241,7 +241,25 @@ make_color_buffer_mask(struct gl_context *ctx, GLint drawbuffer) const struct gl_renderbuffer_attachment *att = ctx->DrawBuffer->Attachment; GLbitfield mask = 0x0; - switch (drawbuffer) { + /* From the GL 4.0 specification: + * If buffer is COLOR, a particular draw buffer DRAW_BUFFERi is + * specified by passing i as the parameter drawbuffer, and value + * points to a four-element vector specifying the R, G, B, and A + * color to clear that draw buffer to. If the draw buffer is one + * of FRONT, BACK, LEFT, RIGHT, or FRONT_AND_BACK, identifying + * multiple buffers, each selected buffer is cleared to the same + * value. + * + * Note that "drawbuffer" and "draw buffer" have different meaning. + * "drawbuffer" specifies DRAW_BUFFERi, while "draw buffer" is what's + * assigned to DRAW_BUFFERi. It could be COLOR_ATTACHMENT0, FRONT, BACK, + * etc. + */ + if (drawbuffer < 0 || drawbuffer >= (GLint)ctx->Const.MaxDrawBuffers) { + return INVALID_MASK; + } + + switch (ctx->DrawBuffer->ColorDrawBuffer[drawbuffer]) { case GL_FRONT: if (att[BUFFER_FRONT_LEFT].Renderbuffer) mask |= BUFFER_BIT_FRONT_LEFT; @@ -249,6 +267,14 @@ make_color_buffer_mask(struct gl_context *ctx, GLint drawbuffer) 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) @@ -277,11 +303,12 @@ make_color_buffer_mask(struct gl_context *ctx, GLint drawbuffer) mask |= BUFFER_BIT_BACK_RIGHT; break; default: - if (drawbuffer < 0 || drawbuffer >= (GLint)ctx->Const.MaxDrawBuffers) { - mask = INVALID_MASK; - } - else if (att[BUFFER_COLOR0 + drawbuffer].Renderbuffer) { - mask |= (BUFFER_BIT_COLOR0 << drawbuffer); + { + GLint buf = ctx->DrawBuffer->_ColorDrawBufferIndexes[drawbuffer]; + + if (buf >= 0 && att[buf].Renderbuffer) { + mask |= 1 << buf; + } } } @@ -298,7 +325,7 @@ void GLAPIENTRY _mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + FLUSH_VERTICES(ctx, 0); FLUSH_CURRENT(ctx, 0); @@ -320,7 +347,8 @@ _mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value) drawbuffer); return; } - else if (ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer && !ctx->RasterDiscard) { + else if (ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer + && !ctx->RasterDiscard) { /* Save current stencil clear value, set to 'value', do the * stencil clear and restore the clear value. * XXX in the future we may have a new ctx->Driver.ClearBuffer() @@ -354,33 +382,38 @@ _mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value) } } 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; } } +/** + * 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_ClearNamedFramebufferiv(GLuint framebuffer, GLenum buffer, + GLint drawbuffer, const GLint *value) +{ + 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). @@ -389,8 +422,8 @@ void GLAPIENTRY _mesa_ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint *value) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + FLUSH_VERTICES(ctx, 0); FLUSH_CURRENT(ctx, 0); if (ctx->NewState) { @@ -420,39 +453,38 @@ _mesa_ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint *value) } } 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). @@ -461,8 +493,8 @@ void GLAPIENTRY _mesa_ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat *value) { GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + FLUSH_VERTICES(ctx, 0); FLUSH_CURRENT(ctx, 0); if (ctx->NewState) { @@ -483,7 +515,8 @@ _mesa_ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat *value) drawbuffer); return; } - else if (ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer && !ctx->RasterDiscard) { + else if (ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer + && !ctx->RasterDiscard) { /* Save current depth clear value, set to 'value', do the * depth clear and restore the clear value. * XXX in the future we may have a new ctx->Driver.ClearBuffer() @@ -518,33 +551,38 @@ _mesa_ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat *value) } } 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. @@ -556,13 +594,12 @@ _mesa_ClearBufferfi(GLenum buffer, GLint drawbuffer, GET_CURRENT_CONTEXT(ctx); GLbitfield mask = 0; - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); - + 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)); + _mesa_enum_to_string(buffer)); return; } @@ -608,3 +645,21 @@ _mesa_ClearBufferfi(GLenum buffer, GLint drawbuffer, 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); +}