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Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/buffers.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/buffers.c | 723 |
1 files changed, 0 insertions, 723 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/buffers.c b/nx-X11/extras/Mesa/src/mesa/main/buffers.c deleted file mode 100644 index 58435e0ed..000000000 --- a/nx-X11/extras/Mesa/src/mesa/main/buffers.c +++ /dev/null @@ -1,723 +0,0 @@ -/** - * \file buffers.c - * Frame buffer management. - */ - -/* - * Mesa 3-D graphics library - * Version: 6.3 - * - * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * 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. - */ - - -#include "glheader.h" -#include "buffers.h" -#include "colormac.h" -#include "context.h" -#include "enums.h" -#include "fbobject.h" -#include "state.h" - - -#define BAD_MASK ~0u - - -#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; - - if (!ctx->Visual.rgbMode && ctx->Driver.ClearIndex) { - /* it's OK to call glClearIndex in RGBA mode but it should be a NOP */ - (*ctx->Driver.ClearIndex)( ctx, ctx->Color.ClearIndex ); - } -} -#endif - - -/** - * Specify the clear values for the color buffers. - * - * \param red red color component. - * \param green green color component. - * \param blue blue color component. - * \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] = CLAMP(red, 0.0F, 1.0F); - tmp[1] = CLAMP(green, 0.0F, 1.0F); - tmp[2] = CLAMP(blue, 0.0F, 1.0F); - tmp[3] = CLAMP(alpha, 0.0F, 1.0F); - - if (TEST_EQ_4V(tmp, ctx->Color.ClearColor)) - return; /* no change */ - - FLUSH_VERTICES(ctx, _NEW_COLOR); - COPY_4V(ctx->Color.ClearColor, tmp); - - if (ctx->Visual.rgbMode && ctx->Driver.ClearColor) { - /* it's OK to call glClearColor in CI mode but it should be a NOP */ - (*ctx->Driver.ClearColor)(ctx, ctx->Color.ClearColor); - } -} - - -/** - * Clear buffers. - * - * \param mask bit-mask indicating the buffers to be cleared. - * - * Flushes the vertices and verifies the parameter. If __GLcontextRec::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); - - 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 (ctx->NewState) { - _mesa_update_state( ctx ); /* update _Xmin, etc */ - } - - if (ctx->RenderMode == GL_RENDER) { - const GLint x = ctx->DrawBuffer->_Xmin; - const GLint y = ctx->DrawBuffer->_Ymin; - const GLint height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin; - const GLint width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin; - GLbitfield bufferMask; - - /* don't clear depth buffer if depth writing disabled */ - if (!ctx->Depth.Mask) - mask &= ~GL_DEPTH_BUFFER_BIT; - - /* Build the bitmask to send to device driver's Clear function. - * Note that the GL_COLOR_BUFFER_BIT flag will expand to 0, 1, 2 or 4 - * of the BUFFER_BIT_FRONT/BACK_LEFT/RIGHT flags, or one of the - * BUFFER_BIT_COLORn flags. - */ - bufferMask = 0; - if (mask & GL_COLOR_BUFFER_BIT) { - bufferMask |= ctx->DrawBuffer->_ColorDrawBufferMask[0]; - } - - if ((mask & GL_DEPTH_BUFFER_BIT) - && ctx->DrawBuffer->Visual.haveDepthBuffer) { - bufferMask |= BUFFER_BIT_DEPTH; - } - - if ((mask & GL_STENCIL_BUFFER_BIT) - && ctx->DrawBuffer->Visual.haveStencilBuffer) { - bufferMask |= BUFFER_BIT_STENCIL; - } - - if ((mask & GL_ACCUM_BUFFER_BIT) - && ctx->DrawBuffer->Visual.haveAccumBuffer) { - bufferMask |= BUFFER_BIT_ACCUM; - } - - ASSERT(ctx->Driver.Clear); - ctx->Driver.Clear( ctx, bufferMask, (GLboolean) !ctx->Scissor.Enabled, - x, y, width, height ); - } -} - - - -/** - * Return bitmask of BUFFER_BIT_* flags indicating which color buffers are - * available to the rendering context. - * This depends on the framebuffer we're writing to. For window system - * framebuffers we look at the framebuffer's visual. But for user- - * create framebuffers we look at the number of supported color attachments. - */ -static GLuint -supported_buffer_bitmask(const GLcontext *ctx, GLuint framebufferID) -{ - GLuint mask = 0x0; - GLint i; - - if (framebufferID > 0) { - /* A user-created renderbuffer */ - ASSERT(ctx->Extensions.EXT_framebuffer_object); - for (i = 0; i < ctx->Const.MaxColorAttachments; i++) { - mask |= (BUFFER_BIT_COLOR0 << i); - } - } - else { - /* A window system renderbuffer */ - mask = BUFFER_BIT_FRONT_LEFT; /* always have this */ - if (ctx->Visual.stereoMode) { - mask |= BUFFER_BIT_FRONT_RIGHT; - if (ctx->Visual.doubleBufferMode) { - mask |= BUFFER_BIT_BACK_LEFT | BUFFER_BIT_BACK_RIGHT; - } - } - else if (ctx->Visual.doubleBufferMode) { - mask |= BUFFER_BIT_BACK_LEFT; - } - - for (i = 0; i < ctx->Visual.numAuxBuffers; i++) { - mask |= (BUFFER_BIT_AUX0 << i); - } - } - - return mask; -} - - -/** - * Helper routine used by glDrawBuffer and glDrawBuffersARB. - * Given a GLenum naming one or more color buffers (such as - * GL_FRONT_AND_BACK), return the corresponding bitmask of BUFFER_BIT_* flags. - */ -static GLuint -draw_buffer_enum_to_bitmask(GLenum buffer) -{ - switch (buffer) { - case GL_NONE: - return 0; - case GL_FRONT: - return BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_FRONT_RIGHT; - case GL_BACK: - return BUFFER_BIT_BACK_LEFT | BUFFER_BIT_BACK_RIGHT; - case GL_RIGHT: - return BUFFER_BIT_FRONT_RIGHT | BUFFER_BIT_BACK_RIGHT; - case GL_FRONT_RIGHT: - return BUFFER_BIT_FRONT_RIGHT; - case GL_BACK_RIGHT: - return BUFFER_BIT_BACK_RIGHT; - case GL_BACK_LEFT: - return BUFFER_BIT_BACK_LEFT; - case GL_FRONT_AND_BACK: - return BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT - | BUFFER_BIT_FRONT_RIGHT | BUFFER_BIT_BACK_RIGHT; - case GL_LEFT: - return BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT; - case GL_FRONT_LEFT: - return BUFFER_BIT_FRONT_LEFT; - case GL_AUX0: - return BUFFER_BIT_AUX0; - case GL_AUX1: - return BUFFER_BIT_AUX1; - case GL_AUX2: - return BUFFER_BIT_AUX2; - case GL_AUX3: - return BUFFER_BIT_AUX3; - case GL_COLOR_ATTACHMENT0_EXT: - return BUFFER_BIT_COLOR0; - case GL_COLOR_ATTACHMENT1_EXT: - return BUFFER_BIT_COLOR1; - case GL_COLOR_ATTACHMENT2_EXT: - return BUFFER_BIT_COLOR2; - case GL_COLOR_ATTACHMENT3_EXT: - return BUFFER_BIT_COLOR3; - default: - /* error */ - return BAD_MASK; - } -} - - -/** - * Helper routine used by glReadBuffer. - * Given a GLenum naming (a) color buffer(s), return the corresponding - * bitmask of DD_* flags. - */ -static GLuint -read_buffer_enum_to_bitmask(GLenum buffer) -{ - switch (buffer) { - case GL_FRONT: - return BUFFER_BIT_FRONT_LEFT; - case GL_BACK: - return BUFFER_BIT_BACK_LEFT; - case GL_RIGHT: - return BUFFER_BIT_FRONT_RIGHT; - case GL_FRONT_RIGHT: - return BUFFER_BIT_FRONT_RIGHT; - case GL_BACK_RIGHT: - return BUFFER_BIT_BACK_RIGHT; - case GL_BACK_LEFT: - return BUFFER_BIT_BACK_LEFT; - case GL_LEFT: - return BUFFER_BIT_FRONT_LEFT; - case GL_FRONT_LEFT: - return BUFFER_BIT_FRONT_LEFT; - case GL_AUX0: - return BUFFER_BIT_AUX0; - case GL_AUX1: - return BUFFER_BIT_AUX1; - case GL_AUX2: - return BUFFER_BIT_AUX2; - case GL_AUX3: - return BUFFER_BIT_AUX3; - case GL_COLOR_ATTACHMENT0_EXT: - return BUFFER_BIT_COLOR0; - case GL_COLOR_ATTACHMENT1_EXT: - return BUFFER_BIT_COLOR1; - case GL_COLOR_ATTACHMENT2_EXT: - return BUFFER_BIT_COLOR2; - case GL_COLOR_ATTACHMENT3_EXT: - return BUFFER_BIT_COLOR3; - default: - /* error */ - return BAD_MASK; - } -} - - -/** - * Specify which color buffers to draw into. - * - * \param buffer color buffer, such as GL_LEFT or GL_FRONT_AND_BACK. - * - * Flushes the vertices and verifies the parameter and updates the - * gl_colorbuffer_attrib::_DrawDestMask bitfield. Marks new color state in - * __GLcontextRec::NewState and notifies the driver via the - * dd_function_table::DrawBuffer callback. - */ -void GLAPIENTRY -_mesa_DrawBuffer(GLenum buffer) -{ - GLuint bufferID; - GLuint destMask; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex... */ - - if (MESA_VERBOSE & VERBOSE_API) { - _mesa_debug(ctx, "glDrawBuffer %s\n", _mesa_lookup_enum_by_nr(buffer)); - } - - bufferID = ctx->DrawBuffer->Name; - - if (buffer == GL_NONE) { - destMask = 0x0; - } - else { - const GLuint supportedMask = supported_buffer_bitmask(ctx, bufferID); - destMask = draw_buffer_enum_to_bitmask(buffer); - if (destMask == BAD_MASK) { - /* totally bogus buffer */ - _mesa_error(ctx, GL_INVALID_ENUM, "glDrawBuffer(buffer)"); - return; - } - destMask &= supportedMask; - if (destMask == 0x0) { - /* none of the named color buffers exist! */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawBuffer(buffer)"); - return; - } - } - - /* if we get here, there's no error so set new state */ - _mesa_drawbuffers(ctx, 1, &buffer, &destMask); -} - - -/** - * Called by glDrawBuffersARB; specifies the destination color buffers - * for N fragment program color outputs. - * - * XXX This function is called by _mesa_PopAttrib() and we need to do - * some more work to deal with the current framebuffer binding state! - */ -void GLAPIENTRY -_mesa_DrawBuffersARB(GLsizei n, const GLenum *buffers) -{ - GLint output; - GLuint usedBufferMask, supportedMask; - GLuint bufferID; - GLuint destMask[MAX_DRAW_BUFFERS]; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); - - if (!ctx->Extensions.ARB_draw_buffers) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawBuffersARB"); - return; - } - if (n < 1 || n > (GLsizei) ctx->Const.MaxDrawBuffers) { - _mesa_error(ctx, GL_INVALID_VALUE, "glDrawBuffersARB(n)"); - return; - } - - bufferID = ctx->DrawBuffer->Name; - - supportedMask = supported_buffer_bitmask(ctx, bufferID); - usedBufferMask = 0x0; - - /* complicated error checking... */ - for (output = 0; output < n; output++) { - if (buffers[output] == GL_NONE) { - destMask[output] = 0x0; - } - else { - destMask[output] = draw_buffer_enum_to_bitmask(buffers[output]); - if (destMask[output] == BAD_MASK - || _mesa_bitcount(destMask[output]) > 1) { - _mesa_error(ctx, GL_INVALID_ENUM, "glDrawBuffersARB(buffer)"); - return; - } - destMask[output] &= supportedMask; - if (destMask[output] == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glDrawBuffersARB(unsupported buffer)"); - return; - } - if (destMask[output] & usedBufferMask) { - /* can't specify a dest buffer more than once! */ - _mesa_error(ctx, GL_INVALID_OPERATION, - "glDrawBuffersARB(duplicated buffer)"); - return; - } - - /* update bitmask */ - usedBufferMask |= destMask[output]; - } - } - - /* OK, if we get here, there were no errors so set the new state */ - _mesa_drawbuffers(ctx, n, buffers, destMask); -} - - -/** - * Set color output state. Traditionally, there was only one color - * output, but fragment programs can now have several distinct color - * outputs (see GL_ARB_draw_buffers). This function sets the state - * for one such color output. - */ -static void -set_color_output(GLcontext *ctx, GLuint output, GLenum buffer, GLuint destMask) -{ - struct gl_framebuffer *fb = ctx->DrawBuffer; - - ASSERT(output < ctx->Const.MaxDrawBuffers); - - fb->ColorDrawBuffer[output] = buffer; - fb->_ColorDrawBufferMask[output] = destMask; - - if (fb->Name == 0) { - /* Set traditional state var */ - ctx->Color.DrawBuffer[output] = buffer; - } - - /* not really needed, will be set later */ - fb->_NumColorDrawBuffers[output] = 0; -} - - -/** - * Helper routine used by _mesa_DrawBuffer, _mesa_DrawBuffersARB and - * _mesa_PopAttrib to set drawbuffer state. - */ -void -_mesa_drawbuffers(GLcontext *ctx, GLsizei n, const GLenum *buffers, - const GLuint *destMask) -{ - GLuint mask[MAX_DRAW_BUFFERS]; - GLint output; - - if (!destMask) { - /* compute destMask values now */ - const GLuint bufferID = ctx->DrawBuffer->Name; - const GLuint supportedMask = supported_buffer_bitmask(ctx, bufferID); - for (output = 0; output < n; output++) { - mask[output] = draw_buffer_enum_to_bitmask(buffers[output]); - ASSERT(mask[output] != BAD_MASK); - mask[output] &= supportedMask; - } - destMask = mask; - } - - for (output = 0; output < n; output++) { - set_color_output(ctx, output, buffers[output], destMask[output]); - } - - /* set remaining color outputs to NONE */ - for (output = n; output < ctx->Const.MaxDrawBuffers; output++) { - set_color_output(ctx, output, GL_NONE, 0x0); - } - - ctx->NewState |= _NEW_COLOR; - - /* - * Call device driver function. - */ - if (ctx->Driver.DrawBuffers) - ctx->Driver.DrawBuffers(ctx, n, buffers); - else if (ctx->Driver.DrawBuffer) - ctx->Driver.DrawBuffer(ctx, buffers[0]); -} - - - -/** - * Set the color buffer source for reading pixels. - * - * \param mode color buffer. - * - * \sa glReadBuffer(). - * - */ -void GLAPIENTRY -_mesa_ReadBuffer(GLenum buffer) -{ - struct gl_framebuffer *fb; - GLuint srcMask, supportedMask; - GLuint bufferID; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); - - fb = ctx->ReadBuffer; - bufferID = fb->Name; - - if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glReadBuffer %s\n", _mesa_lookup_enum_by_nr(buffer)); - - if (bufferID > 0 && buffer == GL_NONE) { - /* legal! */ - srcMask = 0x0; - } - else { - /* general case */ - srcMask = read_buffer_enum_to_bitmask(buffer); - if (srcMask == BAD_MASK) { - _mesa_error(ctx, GL_INVALID_ENUM, "glReadBuffer(buffer)"); - return; - } - supportedMask = supported_buffer_bitmask(ctx, bufferID); - if ((srcMask & supportedMask) == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glReadBuffer(buffer)"); - return; - } - } - - if (bufferID == 0) { - ctx->Pixel.ReadBuffer = buffer; - } - fb->ColorReadBuffer = buffer; - fb->_ColorReadBufferMask = srcMask; - - ctx->NewState |= _NEW_PIXEL; - - /* - * Call device driver function. - */ - if (ctx->Driver.ReadBuffer) - (*ctx->Driver.ReadBuffer)(ctx, buffer); -} - - -#if _HAVE_FULL_GL - -/** - * GL_MESA_resize_buffers extension. - * - * When this function is called, we'll ask the window system how large - * the current window is. If it's a new size, we'll call the driver's - * ResizeBuffers function. The driver will then resize its color buffers - * as needed, and maybe call the swrast's routine for reallocating - * swrast-managed depth/stencil/accum/etc buffers. - * \note This function may be called from within Mesa or called by the - * user directly (see the GL_MESA_resize_buffers extension). - */ -void GLAPIENTRY -_mesa_ResizeBuffersMESA( void ) -{ - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx ); - - if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glResizeBuffersMESA\n"); - - if (ctx->DrawBuffer && ctx->DrawBuffer->Name == 0) { - GLuint newWidth, newHeight; - GLframebuffer *buffer = ctx->DrawBuffer; - - /* ask device driver for size of output buffer */ - ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight ); - - /* see if size of device driver's color buffer (window) has changed */ - if (buffer->Width != newWidth || buffer->Height != newHeight) { - if (ctx->Driver.ResizeBuffers) - ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight ); - } - } - - if (ctx->ReadBuffer && ctx->ReadBuffer != ctx->DrawBuffer - && ctx->ReadBuffer->Name == 0) { - GLuint newWidth, newHeight; - GLframebuffer *buffer = ctx->ReadBuffer; - - /* ask device driver for size of read buffer */ - ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight ); - - /* see if size of device driver's color buffer (window) has changed */ - if (buffer->Width != newWidth || buffer->Height != newHeight) { - if (ctx->Driver.ResizeBuffers) - ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight ); - } - } - - ctx->NewState |= _NEW_BUFFERS; /* to update scissor / window bounds */ -} - - -/* - * XXX move somewhere else someday? - */ -void GLAPIENTRY -_mesa_SampleCoverageARB(GLclampf value, GLboolean invert) -{ - GET_CURRENT_CONTEXT(ctx); - - if (!ctx->Extensions.ARB_multisample) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glSampleCoverageARB"); - return; - } - - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx ); - ctx->Multisample.SampleCoverageValue = (GLfloat) CLAMP(value, 0.0, 1.0); - ctx->Multisample.SampleCoverageInvert = invert; - ctx->NewState |= _NEW_MULTISAMPLE; -} - -#endif /* _HAVE_FULL_GL */ - - - -/** - * Define the scissor box. - * - * \param x, y coordinates of the scissor box lower-left corner. - * \param width width of the scissor box. - * \param height height of the scissor box. - * - * \sa glScissor(). - * - * Verifies the parameters and updates __GLcontextRec::Scissor. On a - * change flushes the vertices and notifies the driver via - * the dd_function_table::Scissor callback. - */ -void GLAPIENTRY -_mesa_Scissor( GLint x, GLint y, GLsizei width, GLsizei height ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (width < 0 || height < 0) { - _mesa_error( ctx, GL_INVALID_VALUE, "glScissor" ); - return; - } - - if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glScissor %d %d %d %d\n", x, y, width, height); - - if (x == ctx->Scissor.X && - y == ctx->Scissor.Y && - width == ctx->Scissor.Width && - height == ctx->Scissor.Height) - return; - - FLUSH_VERTICES(ctx, _NEW_SCISSOR); - ctx->Scissor.X = x; - ctx->Scissor.Y = y; - ctx->Scissor.Width = width; - ctx->Scissor.Height = height; - - if (ctx->Driver.Scissor) - ctx->Driver.Scissor( ctx, x, y, width, height ); -} - - - -/**********************************************************************/ -/** \name Initialization */ -/*@{*/ - -/** - * Initialize the context's scissor state. - * \param ctx the GL context. - */ -void -_mesa_init_scissor(GLcontext *ctx) -{ - /* Scissor group */ - ctx->Scissor.Enabled = GL_FALSE; - ctx->Scissor.X = 0; - ctx->Scissor.Y = 0; - ctx->Scissor.Width = 0; - ctx->Scissor.Height = 0; -} - - -/** - * Initialize the context's multisample state. - * \param ctx the GL context. - */ -void -_mesa_init_multisample(GLcontext *ctx) -{ - ctx->Multisample.Enabled = GL_FALSE; - ctx->Multisample.SampleAlphaToCoverage = GL_FALSE; - ctx->Multisample.SampleAlphaToOne = GL_FALSE; - ctx->Multisample.SampleCoverage = GL_FALSE; - ctx->Multisample.SampleCoverageValue = 1.0; - ctx->Multisample.SampleCoverageInvert = GL_FALSE; -} - -/*@}*/ |