/************************************************************************** * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * 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, sub license, 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 (including the * next paragraph) 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 NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 "context.h" #include "macros.h" #include "enums.h" #include "i915_batch.h" #include "i915_state_inlines.h" #include "i915_context.h" #include "i915_reg.h" #include "i915_state.h" #define FILE_DEBUG_FLAG DEBUG_STATE /* State that we have chosen to store in the DYNAMIC segment of the * i915 indirect state mechanism. * * Can't cache these in the way we do the static state, as there is no * start/size in the command packet, instead an 'end' value that gets * incremented. * * Additionally, there seems to be a requirement to re-issue the full * (active) state every time a 4kb boundary is crossed. */ static inline void set_dynamic_indirect( struct i915_context *i915, GLuint offset, const GLuint *src, GLuint dwords ) { int i; for (i = 0; i < dwords; i++) i915->current.dynamic[offset + i] = src[i]; i915->hardware_dirty |= I915_HW_DYNAMIC; } /*********************************************************************** * Modes4: stencil masks and logicop */ static void upload_MODES4( struct i915_context *i915 ) { GLuint modes4 = 0; /* I915_NEW_STENCIL */ { GLint testmask = i915->stencil.value_mask[0] & 0xff; GLint writemask = i915->stencil.write_mask[0] & 0xff; modes4 |= (_3DSTATE_MODES_4_CMD | ENABLE_STENCIL_TEST_MASK | STENCIL_TEST_MASK(testmask) | ENABLE_STENCIL_WRITE_MASK | STENCIL_WRITE_MASK(writemask)); } /* I915_NEW_BLEND */ { modes4 |= (_3DSTATE_MODES_4_CMD | ENABLE_LOGIC_OP_FUNC | LOGIC_OP_FUNC(i915_translate_logic_op(i915->blend.logicop_func))); } /* Always, so that we know when state is in-active: */ set_dynamic_indirect( i915, I915_DYNAMIC_MODES4, &modes4, 1 ); } const struct i915_tracked_state i915_upload_MODES4 = { .dirty = I915_NEW_BLEND | I915_NEW_STENCIL, .update = upload_MODES4 }; /*********************************************************************** */ static void upload_BFO( struct i915_context *i915 ) { GLuint bf[2]; memset( bf, 0, sizeof(bf) ); /* _NEW_STENCIL */ if (i915->stencil.back_enabled) { GLint test = i915_translate_compare_func(i915->stencil.back_func); GLint fop = i915_translate_stencil_op(i915->stencil.back_fail_op); GLint dfop = i915_translate_stencil_op(i915->stencil.back_zfail_op); GLint dpop = i915_translate_stencil_op(i915->stencil.back_zpass_op); GLint ref = i915->stencil.ref_value[1] & 0xff; GLint tmask = i915->stencil.value_mask[1] & 0xff; GLint wmask = i915->stencil.write_mask[1] & 0xff; bf[0] = (_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_FUNCS | BFO_ENABLE_STENCIL_TWO_SIDE | BFO_ENABLE_STENCIL_REF | BFO_STENCIL_TWO_SIDE | (ref << BFO_STENCIL_REF_SHIFT) | (test << BFO_STENCIL_TEST_SHIFT) | (fop << BFO_STENCIL_FAIL_SHIFT) | (dfop << BFO_STENCIL_PASS_Z_FAIL_SHIFT) | (dpop << BFO_STENCIL_PASS_Z_PASS_SHIFT)); bf[1] = (_3DSTATE_BACKFACE_STENCIL_MASKS | BFM_ENABLE_STENCIL_TEST_MASK | BFM_ENABLE_STENCIL_WRITE_MASK | (tmask << BFM_STENCIL_TEST_MASK_SHIFT) | (wmask << BFM_STENCIL_WRITE_MASK_SHIFT)); } else { /* This actually disables two-side stencil: The bit set is a * modify-enable bit to indicate we are changing the two-side * setting. Then there is a symbolic zero to show that we are * setting the flag to zero/off. */ bf[0] = (_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_TWO_SIDE | 0); bf[1] = 0; } set_dynamic_indirect( i915, I915_DYNAMIC_BFO_0, &bf[0], 2 ); } const struct i915_tracked_state i915_upload_BFO = { .dirty = I915_NEW_STENCIL, .update = upload_BFO }; /*********************************************************************** */ static void upload_BLENDCOLOR( struct i915_context *i915 ) { GLuint bc[2]; memset( bc, 0, sizeof(bc) ); /* I915_NEW_BLEND {_COLOR} */ { const GLfloat *color = i915->blend_color.color; GLubyte r, g, b, a; UNCLAMPED_FLOAT_TO_UBYTE(r, color[RCOMP]); UNCLAMPED_FLOAT_TO_UBYTE(g, color[GCOMP]); UNCLAMPED_FLOAT_TO_UBYTE(b, color[BCOMP]); UNCLAMPED_FLOAT_TO_UBYTE(a, color[ACOMP]); bc[0] = (_3DSTATE_CONST_BLEND_COLOR_CMD); bc[1] = (a << 24) | (r << 16) | (g << 8) | b; } set_dynamic_indirect( i915, I915_DYNAMIC_BC_0, bc, 2 ); } const struct i915_tracked_state i915_upload_BLENDCOLOR = { .dirty = I915_NEW_BLEND, .update = upload_BLENDCOLOR }; /*********************************************************************** */ static void upload_IAB( struct i915_context *i915 ) { GLuint iab = 0; { GLuint eqRGB = i915->blend.rgb_func; GLuint srcRGB = i915->blend.rgb_src_factor; GLuint dstRGB = i915->blend.rgb_dst_factor; GLuint eqA = i915->blend.alpha_func; GLuint srcA = i915->blend.alpha_src_factor; GLuint dstA = i915->blend.alpha_dst_factor; if (eqA == GL_MIN || eqA == GL_MAX) { srcA = dstA = GL_ONE; } if (eqRGB == GL_MIN || eqRGB == GL_MAX) { srcRGB = dstRGB = GL_ONE; } if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) { iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE | IAB_ENABLE | IAB_MODIFY_FUNC | IAB_MODIFY_SRC_FACTOR | IAB_MODIFY_DST_FACTOR | SRC_ABLND_FACT(i915_translate_blend_factor(srcA)) | DST_ABLND_FACT(i915_translate_blend_factor(dstA)) | (i915_translate_blend_func(eqA) << IAB_FUNC_SHIFT)); } else { iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE | 0); } } set_dynamic_indirect( i915, I915_DYNAMIC_IAB, &iab, 1 ); } const struct i915_tracked_state i915_upload_IAB = { .dirty = I915_NEW_BLEND, .update = upload_IAB }; /*********************************************************************** */ static void upload_DEPTHSCALE( struct i915_context *i915 ) { union { GLfloat f; GLuint u; } ds[2]; memset( ds, 0, sizeof(ds) ); /* I915_NEW_SETUP */ ds[0].u = _3DSTATE_DEPTH_OFFSET_SCALE; ds[1].f = i915->setup.offset_scale; set_dynamic_indirect( i915, I915_DYNAMIC_DEPTHSCALE_0, &ds[0].u, 2 ); } const struct i915_tracked_state i915_upload_DEPTHSCALE = { .dirty = I915_NEW_SETUP, .update = upload_DEPTHSCALE }; /*********************************************************************** * Polygon stipple * * The i915 supports a 4x4 stipple natively, GL wants 32x32. * Fortunately stipple is usually a repeating pattern. * * XXX: does stipple pattern need to be adjusted according to * the window position? * * XXX: possibly need workaround for conform paths test. */ static void upload_STIPPLE( struct i915_context *i915 ) { GLuint st[2]; st[0] = _3DSTATE_STIPPLE; st[1] = 0; /* I915_NEW_SETUP */ if (i915->setup.poly_stipple_enable) { st[1] |= ST1_ENABLE; } /* I915_NEW_STIPPLE */ { const GLubyte *mask = (const GLubyte *)i915->poly_stipple.stipple; GLubyte p[4]; p[0] = mask[12] & 0xf; p[1] = mask[8] & 0xf; p[2] = mask[4] & 0xf; p[3] = mask[0] & 0xf; /* Not sure what to do about fallbacks, so for now just dont: */ st[1] |= ((p[0] << 0) | (p[1] << 4) | (p[2] << 8) | (p[3] << 12)); } set_dynamic_indirect( i915, I915_DYNAMIC_STP_0, &st[0], 2 ); } const struct i915_tracked_state i915_upload_STIPPLE = { .dirty = I915_NEW_SETUP | I915_NEW_STIPPLE, .update = upload_STIPPLE }; /*********************************************************************** * Scissor. */ static void upload_SCISSOR_ENABLE( struct i915_context *i915 ) { unsigned sc[1]; if (i915->setup.scissor) sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT; else sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT; set_dynamic_indirect( i915, I915_DYNAMIC_SC_ENA_0, &sc[0], 1 ); } const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = { .dirty = I915_NEW_SETUP, .update = upload_SCISSOR_ENABLE }; static void upload_SCISSOR_RECT( struct i915_context *i915 ) { unsigned x1 = i915->scissor.minx; unsigned y1 = i915->scissor.miny; unsigned x2 = i915->scissor.maxx; unsigned y2 = i915->scissor.maxy; unsigned sc[3]; sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD; sc[1] = (y1 << 16) | (x1 & 0xffff); sc[2] = (y2 << 16) | (x2 & 0xffff); set_dynamic_indirect( i915, I915_DYNAMIC_SC_RECT_0, &sc[0], 3 ); } const struct i915_tracked_state i915_upload_SCISSOR_RECT = { .dirty = I915_NEW_SCISSOR, .update = upload_SCISSOR_RECT }; static const struct i915_tracked_state *atoms[] = { &i915_upload_MODES4, &i915_upload_BFO, &i915_upload_BLENDCOLOR, &i915_upload_IAB, &i915_upload_DEPTHSCALE, &i915_upload_STIPPLE, &i915_upload_SCISSOR_ENABLE, &i915_upload_SCISSOR_RECT }; /* These will be dynamic indirect state commands, but for now just end * up on the batch buffer with everything else. */ void i915_update_dynamic( struct i915_context *i915 ) { int i; for (i = 0; i < Elements(atoms); i++) if (i915->dirty & atoms[i]->dirty) atoms[i]->update( i915 ); }