diff options
author | Chia-I Wu <[email protected]> | 2015-05-12 23:43:50 +0800 |
---|---|---|
committer | Chia-I Wu <[email protected]> | 2015-06-14 23:00:04 +0800 |
commit | 4fa7ed99a1e9334d96c1efd42344774dae19f466 (patch) | |
tree | 6334e6b8817027e1804bf9638fe151fc4c4caa6e /src/gallium/drivers/ilo | |
parent | 61fea171af64288bdf622e7ecf07e3ca42f83974 (diff) |
ilo: add ilo_state_viewport
We want to replace ilo_viewport_cso and ilo_scissor_state with
ilo_state_viewport.
Diffstat (limited to 'src/gallium/drivers/ilo')
-rw-r--r-- | src/gallium/drivers/ilo/Makefile.sources | 2 | ||||
-rw-r--r-- | src/gallium/drivers/ilo/core/ilo_state_viewport.c | 378 | ||||
-rw-r--r-- | src/gallium/drivers/ilo/core/ilo_state_viewport.h | 132 |
3 files changed, 512 insertions, 0 deletions
diff --git a/src/gallium/drivers/ilo/Makefile.sources b/src/gallium/drivers/ilo/Makefile.sources index 3bb3dde0e18..476a9ffe361 100644 --- a/src/gallium/drivers/ilo/Makefile.sources +++ b/src/gallium/drivers/ilo/Makefile.sources @@ -27,6 +27,8 @@ C_SOURCES := \ core/ilo_state_sampler.h \ core/ilo_state_surface.c \ core/ilo_state_surface.h \ + core/ilo_state_viewport.c \ + core/ilo_state_viewport.h \ core/ilo_state_zs.c \ core/ilo_state_zs.h \ core/intel_winsys.h \ diff --git a/src/gallium/drivers/ilo/core/ilo_state_viewport.c b/src/gallium/drivers/ilo/core/ilo_state_viewport.c new file mode 100644 index 00000000000..aae57334541 --- /dev/null +++ b/src/gallium/drivers/ilo/core/ilo_state_viewport.c @@ -0,0 +1,378 @@ +/* + * Mesa 3-D graphics library + * + * Copyright (C) 2012-2015 LunarG, Inc. + * + * 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 + * 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. + * + * Authors: + * Chia-I Wu <[email protected]> + */ + +#include "ilo_debug.h" +#include "ilo_state_viewport.h" + +static void +viewport_matrix_get_gen6_guardband(const struct ilo_dev *dev, + const struct ilo_state_viewport_matrix_info *mat, + float *min_gbx, float *max_gbx, + float *min_gby, float *max_gby) +{ + /* + * From the Sandy Bridge PRM, volume 2 part 1, page 234: + * + * "Per-Device Guardband Extents + * + * - Supported X,Y ScreenSpace "Guardband" Extent: [-16K,16K-1] + * - Maximum Post-Clamp Delta (X or Y): 16K" + * + * "In addition, in order to be correctly rendered, objects must have a + * screenspace bounding box not exceeding 8K in the X or Y direction. + * This additional restriction must also be comprehended by software, + * i.e., enforced by use of clipping." + * + * From the Ivy Bridge PRM, volume 2 part 1, page 248: + * + * "Per-Device Guardband Extents + * + * - Supported X,Y ScreenSpace "Guardband" Extent: [-32K,32K-1] + * - Maximum Post-Clamp Delta (X or Y): N/A" + * + * "In addition, in order to be correctly rendered, objects must have a + * screenspace bounding box not exceeding 8K in the X or Y direction. + * This additional restriction must also be comprehended by software, + * i.e., enforced by use of clipping." + * + * Combined, the bounding box of any object can not exceed 8K in both + * width and height. + * + * Below we set the guardband as a squre of length 8K, centered at where + * the viewport is. This makes sure all objects passing the GB test are + * valid to the renderer, and those failing the XY clipping have a + * better chance of passing the GB test. + */ + const int max_extent = (ilo_dev_gen(dev) >= ILO_GEN(7)) ? 32768 : 16384; + const int half_len = 8192 / 2; + int center_x = (int) mat->translate[0]; + int center_y = (int) mat->translate[1]; + float scale_x, scale_y; + + ILO_DEV_ASSERT(dev, 6, 8); + + /* make sure the guardband is within the valid range */ + if (center_x - half_len < -max_extent) + center_x = -max_extent + half_len; + else if (center_x + half_len > max_extent - 1) + center_x = max_extent - half_len; + + if (center_y - half_len < -max_extent) + center_y = -max_extent + half_len; + else if (center_y + half_len > max_extent - 1) + center_y = max_extent - half_len; + + scale_x = fabsf(mat->scale[0]); + scale_y = fabsf(mat->scale[1]); + /* + * From the Haswell PRM, volume 2d, page 292-293: + * + * "Note: Minimum allowed value for this field (X/Y Min Clip Guardband) + * is -16384." + * + * "Note: Maximum allowed value for this field (X/Y Max Clip Guardband) + * is 16383." + * + * Avoid small scales. + */ + if (scale_x < 1.0f) + scale_x = 1.0f; + if (scale_y < 1.0f) + scale_y = 1.0f; + + /* in NDC space */ + *min_gbx = ((float) (center_x - half_len) - mat->translate[0]) / scale_x; + *max_gbx = ((float) (center_x + half_len) - mat->translate[0]) / scale_x; + *min_gby = ((float) (center_y - half_len) - mat->translate[1]) / scale_y; + *max_gby = ((float) (center_y + half_len) - mat->translate[1]) / scale_y; +} + +static void +viewport_matrix_get_extent(const struct ilo_state_viewport_matrix_info *mat, + int axis, float *min, float *max) +{ + const float scale_abs = fabsf(mat->scale[axis]); + + *min = -1.0f * scale_abs + mat->translate[axis]; + *max = 1.0f * scale_abs + mat->translate[axis]; +} + +static bool +viewport_matrix_set_gen7_SF_CLIP_VIEWPORT(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport_matrix_info *matrices, + uint8_t count) +{ + uint8_t i; + + ILO_DEV_ASSERT(dev, 6, 8); + + for (i = 0; i < count; i++) { + const struct ilo_state_viewport_matrix_info *mat = &matrices[i]; + float min_gbx, max_gbx, min_gby, max_gby; + uint32_t dw[16]; + + viewport_matrix_get_gen6_guardband(dev, mat, + &min_gbx, &max_gbx, &min_gby, &max_gby); + + dw[0] = fui(mat->scale[0]); + dw[1] = fui(mat->scale[1]); + dw[2] = fui(mat->scale[2]); + dw[3] = fui(mat->translate[0]); + dw[4] = fui(mat->translate[1]); + dw[5] = fui(mat->translate[2]); + dw[6] = 0; + dw[7] = 0; + + dw[8] = fui(min_gbx); + dw[9] = fui(max_gbx); + dw[10] = fui(min_gby); + dw[11] = fui(max_gby); + + if (ilo_dev_gen(dev) >= ILO_GEN(8)) { + float min_x, max_x, min_y, max_y; + + viewport_matrix_get_extent(mat, 0, &min_x, &max_x); + viewport_matrix_get_extent(mat, 1, &min_y, &max_y); + + dw[12] = fui(min_x); + dw[13] = fui(max_x - 1.0f); + dw[14] = fui(min_y); + dw[15] = fui(max_y - 1.0f); + } else { + dw[12] = 0; + dw[13] = 0; + dw[14] = 0; + dw[15] = 0; + } + + STATIC_ASSERT(ARRAY_SIZE(vp->sf_clip[i]) >= 16); + memcpy(vp->sf_clip[i], dw, sizeof(dw)); + } + + return true; +} + +static bool +viewport_matrix_set_gen6_CC_VIEWPORT(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport_matrix_info *matrices, + uint8_t count) +{ + uint8_t i; + + ILO_DEV_ASSERT(dev, 6, 8); + + for (i = 0; i < count; i++) { + const struct ilo_state_viewport_matrix_info *mat = &matrices[i]; + float min_z, max_z; + + viewport_matrix_get_extent(mat, 2, &min_z, &max_z); + + STATIC_ASSERT(ARRAY_SIZE(vp->cc[i]) >= 2); + vp->cc[i][0] = fui(min_z); + vp->cc[i][1] = fui(max_z); + } + + return true; +} + +static bool +viewport_scissor_set_gen6_SCISSOR_RECT(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport_scissor_info *scissors, + uint8_t count) +{ + const uint16_t max_size = (ilo_dev_gen(dev) >= ILO_GEN(7)) ? 16384 : 8192; + uint8_t i; + + ILO_DEV_ASSERT(dev, 6, 8); + + for (i = 0; i < count; i++) { + const struct ilo_state_viewport_scissor_info *scissor = &scissors[i]; + uint16_t min_x, min_y, max_x, max_y; + uint32_t dw0, dw1; + + min_x = (scissor->min_x < max_size) ? scissor->min_x : max_size - 1; + min_y = (scissor->min_y < max_size) ? scissor->min_y : max_size - 1; + max_x = (scissor->max_x < max_size) ? scissor->max_x : max_size - 1; + max_y = (scissor->max_y < max_size) ? scissor->max_y : max_size - 1; + + dw0 = min_y << GEN6_SCISSOR_DW0_MIN_Y__SHIFT | + min_x << GEN6_SCISSOR_DW0_MIN_X__SHIFT; + dw1 = max_y << GEN6_SCISSOR_DW1_MAX_Y__SHIFT | + max_x << GEN6_SCISSOR_DW1_MAX_X__SHIFT; + + STATIC_ASSERT(ARRAY_SIZE(vp->scissor[i]) >= 2); + vp->scissor[i][0] = dw0; + vp->scissor[i][1] = dw1; + } + + return true; +} + +bool +ilo_state_viewport_init(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport_info *info) +{ + const size_t elem_size = ilo_state_viewport_data_size(dev, 1); + + assert(ilo_is_zeroed(vp, sizeof(*vp))); + assert(ilo_is_zeroed(info->data, info->data_size)); + + vp->data = info->data; + + if (info->data_size / elem_size < ILO_STATE_VIEWPORT_MAX_COUNT) + vp->array_size = info->data_size / elem_size; + else + vp->array_size = ILO_STATE_VIEWPORT_MAX_COUNT; + + return ilo_state_viewport_set_params(vp, dev, &info->params, false); +} + +bool +ilo_state_viewport_init_data_only(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + void *data, size_t data_size) +{ + struct ilo_state_viewport_info info; + + memset(&info, 0, sizeof(info)); + info.data = data; + info.data_size = data_size; + + return ilo_state_viewport_init(vp, dev, &info); +} + +bool +ilo_state_viewport_init_for_rectlist(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + void *data, size_t data_size) +{ + struct ilo_state_viewport_info info; + struct ilo_state_viewport_matrix_info mat; + struct ilo_state_viewport_scissor_info sci; + + memset(&info, 0, sizeof(info)); + memset(&mat, 0, sizeof(mat)); + memset(&sci, 0, sizeof(sci)); + + info.data = data; + info.data_size = data_size; + info.params.matrices = &mat; + info.params.scissors = &sci; + info.params.count = 1; + + mat.scale[0] = 1.0f; + mat.scale[1] = 1.0f; + mat.scale[2] = 1.0f; + + return ilo_state_viewport_init(vp, dev, &info); +} + +static void +viewport_set_count(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + uint8_t count) +{ + assert(count <= vp->array_size); + + vp->count = count; + vp->sf_clip = (uint32_t (*)[16]) vp->data; + vp->cc = (uint32_t (*)[ 2]) (vp->sf_clip + count); + vp->scissor = (uint32_t (*)[ 2]) (vp->cc + count); +} + +bool +ilo_state_viewport_set_params(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport_params_info *params, + bool scissors_only) +{ + bool ret = true; + + if (scissors_only) { + assert(vp->count == params->count); + + ret &= viewport_scissor_set_gen6_SCISSOR_RECT(vp, dev, + params->scissors, params->count); + } else { + viewport_set_count(vp, dev, params->count); + + ret &= viewport_matrix_set_gen7_SF_CLIP_VIEWPORT(vp, dev, + params->matrices, params->count); + ret &= viewport_matrix_set_gen6_CC_VIEWPORT(vp, dev, + params->matrices, params->count); + ret &= viewport_scissor_set_gen6_SCISSOR_RECT(vp, dev, + params->scissors, params->count); + } + + assert(ret); + + return ret; +} + +void +ilo_state_viewport_full_delta(const struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + struct ilo_state_viewport_delta *delta) +{ + delta->dirty = ILO_STATE_VIEWPORT_SF_CLIP_VIEWPORT | + ILO_STATE_VIEWPORT_CC_VIEWPORT | + ILO_STATE_VIEWPORT_SCISSOR_RECT; +} + +void +ilo_state_viewport_get_delta(const struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport *old, + struct ilo_state_viewport_delta *delta) +{ + const size_t sf_clip_size = sizeof(vp->sf_clip[0]) * vp->count; + const size_t cc_size = sizeof(vp->cc[0]) * vp->count; + const size_t scissor_size = sizeof(vp->scissor[0]) * vp->count; + + /* no shallow copying */ + assert(vp->data != old->data); + + if (vp->count != old->count) { + ilo_state_viewport_full_delta(vp, dev, delta); + return; + } + + delta->dirty = 0; + + if (memcmp(vp->sf_clip, old->sf_clip, sf_clip_size)) + delta->dirty |= ILO_STATE_VIEWPORT_SF_CLIP_VIEWPORT; + + if (memcmp(vp->cc, old->cc, cc_size)) + delta->dirty |= ILO_STATE_VIEWPORT_CC_VIEWPORT; + + if (memcmp(vp->scissor, old->scissor, scissor_size)) + delta->dirty |= ILO_STATE_VIEWPORT_SCISSOR_RECT; +} diff --git a/src/gallium/drivers/ilo/core/ilo_state_viewport.h b/src/gallium/drivers/ilo/core/ilo_state_viewport.h new file mode 100644 index 00000000000..b42ad6571da --- /dev/null +++ b/src/gallium/drivers/ilo/core/ilo_state_viewport.h @@ -0,0 +1,132 @@ +/* + * Mesa 3-D graphics library + * + * Copyright (C) 2015 LunarG, Inc. + * + * 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 + * 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. + * + * Authors: + * Chia-I Wu <[email protected]> + */ + +#ifndef ILO_STATE_VIEWPORT_H +#define ILO_STATE_VIEWPORT_H + +#include "genhw/genhw.h" + +#include "ilo_core.h" +#include "ilo_dev.h" + +/* + * From the Sandy Bridge PRM, volume 2 part 1, page 38: + * + * "... 16 sets of viewport (VP) state parameters in the Clip unit's + * VertexClipTest function and in the SF unit's ViewportMapping and + * Scissor functions." + */ +#define ILO_STATE_VIEWPORT_MAX_COUNT 16 + +enum ilo_state_viewport_dirty_bits { + ILO_STATE_VIEWPORT_SF_CLIP_VIEWPORT = (1 << 0), + ILO_STATE_VIEWPORT_CC_VIEWPORT = (1 << 1), + ILO_STATE_VIEWPORT_SCISSOR_RECT = (1 << 2), +}; + +struct ilo_state_viewport_matrix_info { + float scale[3]; + float translate[3]; +}; + +struct ilo_state_viewport_scissor_info { + /* all inclusive */ + uint16_t min_x; + uint16_t min_y; + uint16_t max_x; + uint16_t max_y; +}; + +struct ilo_state_viewport_params_info { + const struct ilo_state_viewport_matrix_info *matrices; + const struct ilo_state_viewport_scissor_info *scissors; + uint8_t count; +}; + +struct ilo_state_viewport_info { + void *data; + size_t data_size; + + struct ilo_state_viewport_params_info params; +}; + +struct ilo_state_viewport { + void *data; + uint8_t array_size; + + uint8_t count; + uint32_t (*sf_clip)[16]; + uint32_t (*cc)[2]; + uint32_t (*scissor)[2]; +}; + +struct ilo_state_viewport_delta { + uint32_t dirty; +}; + +static inline size_t +ilo_state_viewport_data_size(const struct ilo_dev *dev, uint8_t array_size) +{ + const struct ilo_state_viewport *vp = NULL; + return (sizeof(vp->sf_clip[0]) + + sizeof(vp->cc[0]) + + sizeof(vp->scissor[0])) * array_size; +} + +bool +ilo_state_viewport_init(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport_info *info); + +bool +ilo_state_viewport_init_data_only(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + void *data, size_t data_size); + +bool +ilo_state_viewport_init_for_rectlist(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + void *data, size_t data_size); + +bool +ilo_state_viewport_set_params(struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport_params_info *params, + bool scissors_only); + +void +ilo_state_viewport_full_delta(const struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + struct ilo_state_viewport_delta *delta); + +void +ilo_state_viewport_get_delta(const struct ilo_state_viewport *vp, + const struct ilo_dev *dev, + const struct ilo_state_viewport *old, + struct ilo_state_viewport_delta *delta); + +#endif /* ILO_STATE_VIEWPORT_H */ |