diff options
Diffstat (limited to 'src/mesa/main/state.c')
| -rw-r--r-- | src/mesa/main/state.c | 337 |
1 files changed, 261 insertions, 76 deletions
diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c index 6fe54c753f..f10e6b04b7 100644 --- a/src/mesa/main/state.c +++ b/src/mesa/main/state.c @@ -1,6 +1,6 @@ /* * Mesa 3-D graphics library - * Version: 7.1 + * Version: 7.3 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. * @@ -40,15 +40,15 @@ #include "framebuffer.h" #include "light.h" #include "matrix.h" -#if FEATURE_pixel_transfer #include "pixel.h" -#endif #include "shader/program.h" +#include "shader/prog_parameter.h" #include "state.h" #include "stencil.h" #include "texenvprogram.h" #include "texobj.h" #include "texstate.h" +#include "viewport.h" static void @@ -62,124 +62,172 @@ update_separate_specular(GLcontext *ctx) /** - * Update state dependent on vertex arrays. + * Compute the index of the last array element that can be safely accessed + * in a vertex array. We can really only do this when the array lives in + * a VBO. + * The array->_MaxElement field will be updated. + * Later in glDrawArrays/Elements/etc we can do some bounds checking. + */ +static void +compute_max_element(struct gl_client_array *array) +{ + assert(array->Enabled); + if (array->BufferObj->Name) { + GLsizeiptrARB offset = (GLsizeiptrARB) array->Ptr; + GLsizeiptrARB obj_size = (GLsizeiptrARB) array->BufferObj->Size; + + if (offset < obj_size) { + array->_MaxElement = (obj_size - offset + + array->StrideB - + array->_ElementSize) / array->StrideB; + } else { + array->_MaxElement = 0; + } + /* Compute the max element we can access in the VBO without going + * out of bounds. + */ + array->_MaxElement = ((GLsizeiptrARB) array->BufferObj->Size + - (GLsizeiptrARB) array->Ptr + array->StrideB + - array->_ElementSize) / array->StrideB; + } + else { + /* user-space array, no idea how big it is */ + array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */ + } +} + + +/** + * Helper for update_arrays(). + * \return min(current min, array->_MaxElement). + */ +static GLuint +update_min(GLuint min, struct gl_client_array *array) +{ + compute_max_element(array); + return MIN2(min, array->_MaxElement); +} + + +/** + * Update ctx->Array._MaxElement (the max legal index into all enabled arrays). + * Need to do this upon new array state or new buffer object state. */ static void update_arrays( GLcontext *ctx ) { - GLuint i, min; + struct gl_array_object *arrayObj = ctx->Array.ArrayObj; + GLuint i, min = ~0; /* find min of _MaxElement values for all enabled arrays */ /* 0 */ if (ctx->VertexProgram._Current - && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled) { - min = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS]._MaxElement; - } - else if (ctx->Array.ArrayObj->Vertex.Enabled) { - min = ctx->Array.ArrayObj->Vertex._MaxElement; + && arrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_POS]); } - else { - /* can't draw anything without vertex positions! */ - min = 0; + else if (arrayObj->Vertex.Enabled) { + min = update_min(min, &arrayObj->Vertex); } /* 1 */ if (ctx->VertexProgram._Enabled - && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT]._MaxElement); + && arrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_WEIGHT]); } /* no conventional vertex weight array */ /* 2 */ if (ctx->VertexProgram._Enabled - && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]._MaxElement); + && arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL]); } - else if (ctx->Array.ArrayObj->Normal.Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->Normal._MaxElement); + else if (arrayObj->Normal.Enabled) { + min = update_min(min, &arrayObj->Normal); } /* 3 */ if (ctx->VertexProgram._Enabled - && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]._MaxElement); + && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0]); } - else if (ctx->Array.ArrayObj->Color.Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->Color._MaxElement); + else if (arrayObj->Color.Enabled) { + min = update_min(min, &arrayObj->Color); } /* 4 */ if (ctx->VertexProgram._Enabled - && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR1]._MaxElement); + && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR1]); } - else if (ctx->Array.ArrayObj->SecondaryColor.Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->SecondaryColor._MaxElement); + else if (arrayObj->SecondaryColor.Enabled) { + min = update_min(min, &arrayObj->SecondaryColor); } /* 5 */ if (ctx->VertexProgram._Enabled - && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_FOG].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_FOG]._MaxElement); + && arrayObj->VertexAttrib[VERT_ATTRIB_FOG].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_FOG]); } - else if (ctx->Array.ArrayObj->FogCoord.Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->FogCoord._MaxElement); + else if (arrayObj->FogCoord.Enabled) { + min = update_min(min, &arrayObj->FogCoord); } /* 6 */ if (ctx->VertexProgram._Enabled - && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX]._MaxElement); + && arrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX]); } - else if (ctx->Array.ArrayObj->Index.Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->Index._MaxElement); + else if (arrayObj->Index.Enabled) { + min = update_min(min, &arrayObj->Index); } - /* 7 */ if (ctx->VertexProgram._Enabled - && ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG]._MaxElement); + && arrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG]); } /* 8..15 */ for (i = VERT_ATTRIB_TEX0; i <= VERT_ATTRIB_TEX7; i++) { if (ctx->VertexProgram._Enabled - && ctx->Array.ArrayObj->VertexAttrib[i].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[i]._MaxElement); + && arrayObj->VertexAttrib[i].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[i]); } else if (i - VERT_ATTRIB_TEX0 < ctx->Const.MaxTextureCoordUnits - && ctx->Array.ArrayObj->TexCoord[i - VERT_ATTRIB_TEX0].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->TexCoord[i - VERT_ATTRIB_TEX0]._MaxElement); + && arrayObj->TexCoord[i - VERT_ATTRIB_TEX0].Enabled) { + min = update_min(min, &arrayObj->TexCoord[i - VERT_ATTRIB_TEX0]); } } /* 16..31 */ if (ctx->VertexProgram._Current) { - for (i = VERT_ATTRIB_GENERIC0; i < VERT_ATTRIB_MAX; i++) { - if (ctx->Array.ArrayObj->VertexAttrib[i].Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->VertexAttrib[i]._MaxElement); + for (i = 0; i < Elements(arrayObj->VertexAttrib); i++) { + if (arrayObj->VertexAttrib[i].Enabled) { + min = update_min(min, &arrayObj->VertexAttrib[i]); } } } - if (ctx->Array.ArrayObj->EdgeFlag.Enabled) { - min = MIN2(min, ctx->Array.ArrayObj->EdgeFlag._MaxElement); + if (arrayObj->EdgeFlag.Enabled) { + min = update_min(min, &arrayObj->EdgeFlag); } /* _MaxElement is one past the last legal array element */ - ctx->Array._MaxElement = min; + arrayObj->_MaxElement = min; } +/** + * Update the following fields: + * ctx->VertexProgram._Enabled + * ctx->FragmentProgram._Enabled + * ctx->ATIFragmentShader._Enabled + * This needs to be done before texture state validation. + */ static void -update_program(GLcontext *ctx) +update_program_enables(GLcontext *ctx) { - const struct gl_shader_program *shProg = ctx->Shader.CurrentProgram; - const struct gl_vertex_program *prevVP = ctx->VertexProgram._Current; - const struct gl_fragment_program *prevFP = ctx->FragmentProgram._Current; - /* These _Enabled flags indicate if the program is enabled AND valid. */ ctx->VertexProgram._Enabled = ctx->VertexProgram.Enabled && ctx->VertexProgram.Current->Base.Instructions; @@ -187,6 +235,29 @@ update_program(GLcontext *ctx) && ctx->FragmentProgram.Current->Base.Instructions; ctx->ATIFragmentShader._Enabled = ctx->ATIFragmentShader.Enabled && ctx->ATIFragmentShader.Current->Instructions[0]; +} + + +/** + * Update vertex/fragment program state. In particular, update these fields: + * ctx->VertexProgram._Current + * ctx->VertexProgram._TnlProgram, + * These point to the highest priority enabled vertex/fragment program or are + * NULL if fixed-function processing is to be done. + * + * This function needs to be called after texture state validation in case + * we're generating a fragment program from fixed-function texture state. + * + * \return bitfield which will indicate _NEW_PROGRAM state if a new vertex + * or fragment program is being used. + */ +static GLbitfield +update_program(GLcontext *ctx) +{ + const struct gl_shader_program *shProg = ctx->Shader.CurrentProgram; + const struct gl_vertex_program *prevVP = ctx->VertexProgram._Current; + const struct gl_fragment_program *prevFP = ctx->FragmentProgram._Current; + GLbitfield new_state = 0x0; /* * Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current @@ -256,18 +327,56 @@ update_program(GLcontext *ctx) /* Let the driver know what's happening: */ - if (ctx->FragmentProgram._Current != prevFP && ctx->Driver.BindProgram) { - ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, - (struct gl_program *) ctx->FragmentProgram._Current); + if (ctx->FragmentProgram._Current != prevFP) { + new_state |= _NEW_PROGRAM; + if (ctx->Driver.BindProgram) { + ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, + (struct gl_program *) ctx->FragmentProgram._Current); + } } - if (ctx->VertexProgram._Current != prevVP && ctx->Driver.BindProgram) { - ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB, - (struct gl_program *) ctx->VertexProgram._Current); + if (ctx->VertexProgram._Current != prevVP) { + new_state |= _NEW_PROGRAM; + if (ctx->Driver.BindProgram) { + ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB, + (struct gl_program *) ctx->VertexProgram._Current); + } } + + return new_state; } +/** + * Examine shader constants and return either _NEW_PROGRAM_CONSTANTS or 0. + */ +static GLbitfield +update_program_constants(GLcontext *ctx) +{ + GLbitfield new_state = 0x0; + + if (ctx->FragmentProgram._Current) { + const struct gl_program_parameter_list *params = + ctx->FragmentProgram._Current->Base.Parameters; + if (params && params->StateFlags & ctx->NewState) { + new_state |= _NEW_PROGRAM_CONSTANTS; + } + } + + if (ctx->VertexProgram._Current) { + const struct gl_program_parameter_list *params = + ctx->VertexProgram._Current->Base.Parameters; + if (params && params->StateFlags & ctx->NewState) { + new_state |= _NEW_PROGRAM_CONSTANTS; + } + } + + return new_state; +} + + + + static void update_viewport_matrix(GLcontext *ctx) { @@ -425,17 +534,41 @@ _mesa_update_state_locked( GLcontext *ctx ) { GLbitfield new_state = ctx->NewState; GLbitfield prog_flags = _NEW_PROGRAM; + GLbitfield new_prog_state = 0x0; + + if (new_state == _NEW_CURRENT_ATTRIB) + goto out; if (MESA_VERBOSE & VERBOSE_STATE) _mesa_print_state("_mesa_update_state", new_state); + /* Determine which state flags effect vertex/fragment program state */ + if (ctx->FragmentProgram._MaintainTexEnvProgram) { + prog_flags |= (_NEW_TEXTURE | _NEW_FOG | + _NEW_ARRAY | _NEW_LIGHT | _NEW_POINT | _NEW_RENDERMODE | + _NEW_PROGRAM); + } + if (ctx->VertexProgram._MaintainTnlProgram) { + prog_flags |= (_NEW_ARRAY | _NEW_TEXTURE | _NEW_TEXTURE_MATRIX | + _NEW_TRANSFORM | _NEW_POINT | + _NEW_FOG | _NEW_LIGHT | + _MESA_NEW_NEED_EYE_COORDS); + } + + /* + * Now update derived state info + */ + + if (new_state & prog_flags) + update_program_enables( ctx ); + if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION)) _mesa_update_modelview_project( ctx, new_state ); if (new_state & (_NEW_PROGRAM|_NEW_TEXTURE|_NEW_TEXTURE_MATRIX)) _mesa_update_texture( ctx, new_state ); - if (new_state & (_NEW_BUFFERS | _NEW_COLOR | _NEW_PIXEL)) + if (new_state & _NEW_BUFFERS) _mesa_update_framebuffer(ctx); if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT)) @@ -447,18 +580,16 @@ _mesa_update_state_locked( GLcontext *ctx ) if (new_state & _NEW_LIGHT) _mesa_update_lighting( ctx ); - if (new_state & _NEW_STENCIL) + if (new_state & (_NEW_STENCIL | _NEW_BUFFERS)) _mesa_update_stencil( ctx ); -#if FEATURE_pixel_transfer - if (new_state & _IMAGE_NEW_TRANSFER_STATE) + if (new_state & _MESA_NEW_TRANSFER_STATE) _mesa_update_pixel( ctx, new_state ); -#endif if (new_state & _DD_NEW_SEPARATE_SPECULAR) update_separate_specular( ctx ); - if (new_state & (_NEW_ARRAY | _NEW_PROGRAM)) + if (new_state & (_NEW_ARRAY | _NEW_PROGRAM | _NEW_BUFFER_OBJECT)) update_arrays( ctx ); if (new_state & (_NEW_BUFFERS | _NEW_VIEWPORT)) @@ -488,19 +619,17 @@ _mesa_update_state_locked( GLcontext *ctx ) if (new_state & _MESA_NEW_NEED_EYE_COORDS) _mesa_update_tnl_spaces( ctx, new_state ); - if (ctx->FragmentProgram._MaintainTexEnvProgram) { - prog_flags |= (_NEW_TEXTURE | _NEW_FOG | _DD_NEW_SEPARATE_SPECULAR); - } - if (ctx->VertexProgram._MaintainTnlProgram) { - prog_flags |= (_NEW_ARRAY | _NEW_TEXTURE | _NEW_TEXTURE_MATRIX | - _NEW_TRANSFORM | _NEW_POINT | - _NEW_FOG | _NEW_LIGHT | - _MESA_NEW_NEED_EYE_COORDS); + if (new_state & prog_flags) { + /* When we generate programs from fixed-function vertex/fragment state + * this call may generate/bind a new program. If so, we need to + * propogate the _NEW_PROGRAM flag to the driver. + */ + new_prog_state |= update_program( ctx ); } - if (new_state & prog_flags) - update_program( ctx ); + out: + new_prog_state |= update_program_constants(ctx); /* * Give the driver a chance to act upon the new_state flags. @@ -511,7 +640,7 @@ _mesa_update_state_locked( GLcontext *ctx ) * Set ctx->NewState to zero to avoid recursion if * Driver.UpdateState() has to call FLUSH_VERTICES(). (fixed?) */ - new_state = ctx->NewState; + new_state = ctx->NewState | new_prog_state; ctx->NewState = 0; ctx->Driver.UpdateState(ctx, new_state); ctx->Array.NewState = 0; @@ -527,3 +656,59 @@ _mesa_update_state( GLcontext *ctx ) _mesa_update_state_locked(ctx); _mesa_unlock_context_textures(ctx); } + + + + +/** + * Want to figure out which fragment program inputs are actually + * constant/current values from ctx->Current. These should be + * referenced as a tracked state variable rather than a fragment + * program input, to save the overhead of putting a constant value in + * every submitted vertex, transferring it to hardware, interpolating + * it across the triangle, etc... + * + * When there is a VP bound, just use vp->outputs. But when we're + * generating vp from fixed function state, basically want to + * calculate: + * + * vp_out_2_fp_in( vp_in_2_vp_out( varying_inputs ) | + * potential_vp_outputs ) + * + * Where potential_vp_outputs is calculated by looking at enabled + * texgen, etc. + * + * The generated fragment program should then only declare inputs that + * may vary or otherwise differ from the ctx->Current values. + * Otherwise, the fp should track them as state values instead. + */ +void +_mesa_set_varying_vp_inputs( GLcontext *ctx, + GLbitfield varying_inputs ) +{ + if (ctx->varying_vp_inputs != varying_inputs) { + ctx->varying_vp_inputs = varying_inputs; + ctx->NewState |= _NEW_ARRAY; + /*_mesa_printf("%s %x\n", __FUNCTION__, varying_inputs);*/ + } +} + + +/** + * Used by drivers to tell core Mesa that the driver is going to + * install/ use its own vertex program. In particular, this will + * prevent generated fragment programs from using state vars instead + * of ordinary varyings/inputs. + */ +void +_mesa_set_vp_override(GLcontext *ctx, GLboolean flag) +{ + if (ctx->VertexProgram._Overriden != flag) { + ctx->VertexProgram._Overriden = flag; + + /* Set one of the bits which will trigger fragment program + * regeneration: + */ + ctx->NewState |= _NEW_PROGRAM; + } +} |