Fixed GapFix artefacts in last pixel row/column
This commit is contained in:
Jens Hemprich
parent
992d8d2719
commit
3764f4e6cf
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@ -17,89 +17,8 @@
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#include "GLRenderUpdateState.h"
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#include "GLUtil.h"
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//*************************************************
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//* Clear buffer
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//*************************************************
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FX_ENTRY void FX_CALL
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grBufferClear( GrColor_t color, GrAlpha_t alpha, FxU16 depth )
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{
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#if defined( OGL_PARTDONE ) || defined( OGL_COMBINE )
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GlideMsg( "grBufferClear( %d, %d, %d )\n", color, alpha, depth );
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#endif
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glReportErrors("grBufferClear");
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RenderDrawTriangles( );
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s_Framebuffer.OnBeforeBufferClear();
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unsigned int Bits = 0;
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if ( Glide.State.ColorMask )
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{
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Bits = GL_COLOR_BUFFER_BIT;
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float r, g, b, a;
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ConvertColorF(color, r, g, b, a);
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Enabled)
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{
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Bits |= GL_STENCIL_BUFFER_BIT;
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Debug)
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{
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// By making the background green,
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// holes in the geometry are easy to spot
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g = 1.0f;
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}
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}
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glClearColor(r, g, b, a);
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glReportError();
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}
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if ( Glide.State.DepthBufferWritting)
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{
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glClearDepth( depth * D1OVER65535 );
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glReportError();
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Bits |= GL_DEPTH_BUFFER_BIT;
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}
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if ( ! OpenGL.Clipping )
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{
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glClear( Bits );
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glReportError();
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}
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else
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{
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glEnable( GL_SCISSOR_TEST );
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glClear( Bits );
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glReportError();
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glDisable( GL_SCISSOR_TEST );
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}
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glReportError();
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}
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//*************************************************
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//* Swaps front and back Buffer
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//*************************************************
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FX_ENTRY void FX_CALL
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grBufferSwap( int swap_interval )
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{
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#if defined( OGL_DONE ) || defined( OGL_COMBINE )
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GlideMsg( "grBufferSwap( %d )\n", swap_interval );
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#endif
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glReportErrors("grBufferSwap");
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RenderDrawTriangles( );
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#ifdef OGL_DEBUG
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static float Temp = 1.0f;
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if ( OGLRender.FrameTriangles > OGLRender.MaxTriangles )
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{
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OGLRender.MaxTriangles = OGLRender.FrameTriangles;
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}
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OGLRender.FrameTriangles = 0;
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#endif
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// Flush the framebuffer
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s_Framebuffer.OnBeforeBufferSwap();
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Enabled)
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// Write colored pixels only
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void gapfixSetSimpleColorState()
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{
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// Disable the cull mode
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glDisable(GL_CULL_FACE);
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@ -159,35 +78,10 @@ grBufferSwap( int swap_interval )
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VERIFY_ACTIVE_TEXTURE_UNIT(OpenGL.ColorAlphaUnit1);
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VERIFY_TEXTURE_ENABLED_STATE();
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}
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glStencilFunc(GL_NOTEQUAL, 0x02, 0x03);
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glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
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glReportError();
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GLfloat clearcolor[] =
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void gapfixRestoreFromSimpleColorState()
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{
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0.0f, 0.0f, 0.0f, 0.0f
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};
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Enabled)
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{
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Debug)
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{
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// By making the gaps red, they're easily to spot
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clearcolor[0] = 1.0f;
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}
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}
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GLfloat depth = 1.0f;
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glBegin(GL_QUADS);
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glColor4fv(clearcolor);
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glVertex3f(Glide.State.ClipMinX, Glide.State.ClipMinY, depth);
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glColor4fv(clearcolor);
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glVertex3f(Glide.State.ClipMaxX, Glide.State.ClipMinY, depth);
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glColor4fv(clearcolor);
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glVertex3f(Glide.State.ClipMaxX, Glide.State.ClipMaxY, depth);
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glColor4fv(clearcolor);
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glVertex3f(Glide.State.ClipMinX, Glide.State.ClipMaxY, depth);
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glEnd();
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glStencilFunc(GL_ALWAYS, 0x02, 0x03);
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glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
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// Restore state
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switch (Glide.State.CullMode)
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{
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@ -207,6 +101,8 @@ grBufferSwap( int swap_interval )
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{
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glDepthMask(true);
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}
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const bool colormask = Glide.State.ColorMask;
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glColorMask(colormask, colormask, colormask, Glide.State.AlphaMask);
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if (Glide.State.DepthBufferMode != GR_DEPTHBUFFER_DISABLE)
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{
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glEnable(GL_DEPTH_TEST);
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@ -218,15 +114,180 @@ grBufferSwap( int swap_interval )
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{
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glEnable(GL_COLOR_SUM_EXT);
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}
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// Return to normal rendering
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glStencilFunc(GL_ALWAYS, 0x02, 0x03);
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glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
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VERIFY_ACTIVE_TEXTURE_UNIT(OpenGL.ColorAlphaUnit1);
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VERIFY_TEXTURE_ENABLED_STATE();
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}
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//*************************************************
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//* Clear buffer
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//*************************************************
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FX_ENTRY void FX_CALL
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grBufferClear( GrColor_t color, GrAlpha_t alpha, FxU16 depth )
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{
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#if defined( OGL_PARTDONE ) || defined( OGL_COMBINE )
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GlideMsg( "grBufferClear( %d, %d, %d )\n", color, alpha, depth );
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#endif
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glReportErrors("grBufferClear");
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RenderDrawTriangles( );
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s_Framebuffer.OnBeforeBufferClear();
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unsigned int Bits = 0;
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if ( Glide.State.ColorMask )
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{
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Bits = GL_COLOR_BUFFER_BIT;
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float r, g, b, a;
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ConvertColorF(color, r, g, b, a);
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Enabled)
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{
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Bits |= GL_STENCIL_BUFFER_BIT;
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Debug)
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{
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// By making the background green,
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// holes in the geometry are easy to spot
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g = 1.0f;
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}
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}
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glClearColor(r, g, b, a);
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glReportError();
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}
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if ( Glide.State.DepthBufferWritting)
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{
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glClearDepth( depth * D1OVER65535 );
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glReportError();
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Bits |= GL_DEPTH_BUFFER_BIT;
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}
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if ( ! OpenGL.Clipping )
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{
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glClear( Bits );
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glReportError();
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}
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else
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{
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glEnable( GL_SCISSOR_TEST );
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glClear( Bits );
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glReportError();
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glDisable( GL_SCISSOR_TEST );
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}
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// In Tomb Raider 1, the last column/row of framebuffer pixels contains gapfix rendering artefacts.
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// This happens, because TR1 doesn't render the last column/row. Because the gapfix actually renders
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// into this area the stencil buffer value must be set to "pixel normally renderded"
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if ((InternalConfig.GapFix & OpenGLideGapFixFlag_Enabled) && (s_GlideApplication.GetType() == GlideApplication::TombRaiderI))
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{
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// write "pixel normally rendered" stencil value in the last column/row
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gapfixSetSimpleColorState();
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Debug)
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{
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// Write Cyan colored pixels
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GLfloat clearcolor[] =
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{
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0.0f, 1.0f, 1.0f, 0.0f
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};
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glColorMask(true, true, true, false);
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glColor4fv(clearcolor);
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}
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// Stencil already set to "pixel normally rendered"
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const GLfloat xmin = 0.0;
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const GLfloat ymin = 0.0;
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const GLfloat xmax = Glide.WindowWidth;
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const GLfloat ymax = Glide.WindowHeight;
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const GLfloat depth = 1.0f;
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// Because we're rendering a quad, one more line maybe not gap-fixed
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// Bottom
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glBegin(GL_QUADS);
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glVertex3f(xmin, ymax - 1.0, depth);
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glVertex3f(xmax, ymax - 1.0, depth);
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glVertex3f(xmax, ymax, depth);
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glVertex3f(xmin, ymax, depth);
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glEnd();
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// right
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glBegin(GL_QUADS);
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glVertex3f(xmax - 1.0, ymin, depth);
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glVertex3f(xmax - 1.0, ymax, depth);
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glVertex3f(xmax, ymax, depth);
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glVertex3f(xmax, ymin, depth);
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glEnd();
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gapfixRestoreFromSimpleColorState();
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}
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glReportError();
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}
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//*************************************************
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//* Swaps front and back Buffer
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//*************************************************
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FX_ENTRY void FX_CALL
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grBufferSwap(int swap_interval)
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{
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#if defined( OGL_DONE ) || defined( OGL_COMBINE )
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GlideMsg( "grBufferSwap( %d )\n", swap_interval );
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#endif
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glReportErrors("grBufferSwap");
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RenderDrawTriangles();
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#ifdef OGL_DEBUG
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static float Temp = 1.0f;
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if (OGLRender.FrameTriangles > OGLRender.MaxTriangles)
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{
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OGLRender.MaxTriangles = OGLRender.FrameTriangles;
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}
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OGLRender.FrameTriangles = 0;
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#endif
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// Flush the framebuffer
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s_Framebuffer.OnBeforeBufferSwap();
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Enabled)
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{
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gapfixSetSimpleColorState();
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glStencilFunc(GL_NOTEQUAL, 0x02, 0x03);
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glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
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glReportError();
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GLfloat clearcolor[] =
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{
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0.0f, 0.0f, 0.0f, 0.0f
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};
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Enabled)
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{
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if (InternalConfig.GapFix & OpenGLideGapFixFlag_Debug)
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{
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// By making the gaps red, they're easily to spot
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clearcolor[0] = 1.0f;
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}
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}
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// @todo: Turn off clipping
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const FxU32 xmin = 0;
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const FxU32 ymin = 0;
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const GlideApplication::Type application = s_GlideApplication.GetType();
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const FxU32 xmax = Glide.WindowWidth - ((application == GlideApplication::TombRaiderI) ? 1 : 0);
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const FxU32 ymax = Glide.WindowHeight - ((application == GlideApplication::TombRaiderI) ? 1 : 0);
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const GLfloat depth = 1.0f;
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glBegin(GL_QUADS);
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glColor4fv(clearcolor);
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glVertex3f(xmin, ymin, depth);
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glColor4fv(clearcolor);
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glVertex3f(xmax, ymin, depth);
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glColor4fv(clearcolor);
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glVertex3f(xmax, ymax, depth);
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glColor4fv(clearcolor);
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glVertex3f(xmin, ymax, depth);
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glEnd();
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gapfixRestoreFromSimpleColorState();
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}
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// @todo: setting the swap interval doesn't seem to work
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// - the 3dfx splash animation appears a bit to fast
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// - the 3Dfx splash animation appears a bit to fast
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// and using higher values doesn't work
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// -> might be a bug in Classic
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// - happens in Classic as well as in OS9 native
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GLint swap = swap_interval;
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aglSetInteger(pWindowInfo->aglContext, AGL_SWAP_INTERVAL, &swap);
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aglReportError();
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