1 /* 2 * Copyright © 2019 Broadcom 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #ifndef V3D_LIMITS_H 25 #define V3D_LIMITS_H 26 27 /* Number of channels a QPU thread executes in parallel. Also known as 28 * gl_SubGroupSizeARB. 29 */ 30 #define V3D_CHANNELS 16 31 32 #define V3D_MAX_FS_INPUTS 64 33 #define V3D_MAX_GS_INPUTS 64 34 #define V3D_MAX_VS_INPUTS 64 35 #define V3D_MAX_ANY_STAGE_INPUTS MAX3(V3D_MAX_VS_INPUTS, \ 36 V3D_MAX_GS_INPUTS, \ 37 V3D_MAX_FS_INPUTS) 38 39 /* For now we need to maintain a different limits for OpenGL and Vulkan due 40 * some OpenGL CTS tests hitting register allocation when trying to use all 41 * the texture available. 42 * 43 * FIXME: nir_schedule should be able to handle that. When fixed it would be 44 * simpler to keep just one limit 45 */ 46 #define V3D_VULKAN_MAX_TEXTURE_SAMPLERS 24 47 #define V3D_OPENGL_MAX_TEXTURE_SAMPLERS 16 48 49 /* Not specifically a hardware limit, just coordination between compiler and 50 * driver. 51 */ 52 #define V3D_MAX_TEXTURE_SAMPLERS MAX2(V3D_VULKAN_MAX_TEXTURE_SAMPLERS, \ 53 V3D_OPENGL_MAX_TEXTURE_SAMPLERS) 54 55 /* The HW can do 16384 (15), but we run into hangs when we expose that. */ 56 #define V3D_MAX_MIP_LEVELS 13 57 58 #define V3D_MAX_SAMPLES 4 59 60 #define V3D_MAX_DRAW_BUFFERS 4 61 62 #define V3D_MAX_POINT_SIZE 512.0f 63 #define V3D_MAX_LINE_WIDTH 32 64 65 #define V3D_MAX_BUFFER_RANGE (1 << 27) 66 67 /* Sub-pixel precission bits in the rasterizer */ 68 #define V3D_COORD_SHIFT 6 69 70 /* Size of a cache line */ 71 #define V3D_NON_COHERENT_ATOM_SIZE 256 72 73 #endif /* V3D_LIMITS_H */ 74