356 lines
8.9 KiB
C
356 lines
8.9 KiB
C
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/* libs/opengles/matrix.h
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**
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** Copyright 2006, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#ifndef ANDROID_OPENGLES_MATRIX_H
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#define ANDROID_OPENGLES_MATRIX_H
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#include <stdint.h>
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#include <stddef.h>
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#include <sys/types.h>
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#include <utils/Log.h>
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#include <private/pixelflinger/ggl_context.h>
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#include <GLES/gl.h>
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namespace android {
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const int OGLES_MODELVIEW_STACK_DEPTH = 16;
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const int OGLES_PROJECTION_STACK_DEPTH = 2;
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const int OGLES_TEXTURE_STACK_DEPTH = 2;
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void ogles_init_matrix(ogles_context_t*);
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void ogles_uninit_matrix(ogles_context_t*);
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void ogles_invalidate_perspective(ogles_context_t* c);
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void ogles_validate_transform_impl(ogles_context_t* c, uint32_t want);
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int ogles_surfaceport(ogles_context_t* c, GLint x, GLint y);
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void ogles_scissor(ogles_context_t* c,
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GLint x, GLint y, GLsizei w, GLsizei h);
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void ogles_viewport(ogles_context_t* c,
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GLint x, GLint y, GLsizei w, GLsizei h);
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inline void ogles_validate_transform(
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ogles_context_t* c, uint32_t want)
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{
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if (c->transforms.dirty & want)
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ogles_validate_transform_impl(c, want);
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}
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// ----------------------------------------------------------------------------
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inline
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GLfixed vsquare3(GLfixed a, GLfixed b, GLfixed c)
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{
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#if defined(__arm__) && !defined(__thumb__)
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GLfixed r;
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int32_t t;
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asm(
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"smull %0, %1, %2, %2 \n"
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"smlal %0, %1, %3, %3 \n"
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"smlal %0, %1, %4, %4 \n"
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"movs %0, %0, lsr #16 \n"
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"adc %0, %0, %1, lsl #16 \n"
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: "=&r"(r), "=&r"(t)
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: "%r"(a), "r"(b), "r"(c)
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: "cc"
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);
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return r;
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#else
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return (( int64_t(a)*a +
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int64_t(b)*b +
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int64_t(c)*c + 0x8000)>>16);
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#endif
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}
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static inline GLfixed mla2a( GLfixed a0, GLfixed b0,
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GLfixed a1, GLfixed b1,
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GLfixed c)
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{
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#if defined(__arm__) && !defined(__thumb__)
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GLfixed r;
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int32_t t;
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asm(
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"smull %0, %1, %2, %3 \n"
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"smlal %0, %1, %4, %5 \n"
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"add %0, %6, %0, lsr #16 \n"
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"add %0, %0, %1, lsl #16 \n"
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: "=&r"(r), "=&r"(t)
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: "%r"(a0), "r"(b0),
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"%r"(a1), "r"(b1),
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"r"(c)
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:
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);
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return r;
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#else
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return (( int64_t(a0)*b0 +
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int64_t(a1)*b1)>>16) + c;
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#endif
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}
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static inline GLfixed mla3a( GLfixed a0, GLfixed b0,
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GLfixed a1, GLfixed b1,
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GLfixed a2, GLfixed b2,
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GLfixed c)
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{
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#if defined(__arm__) && !defined(__thumb__)
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GLfixed r;
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int32_t t;
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asm(
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"smull %0, %1, %2, %3 \n"
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"smlal %0, %1, %4, %5 \n"
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"smlal %0, %1, %6, %7 \n"
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"add %0, %8, %0, lsr #16 \n"
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"add %0, %0, %1, lsl #16 \n"
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: "=&r"(r), "=&r"(t)
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: "%r"(a0), "r"(b0),
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"%r"(a1), "r"(b1),
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"%r"(a2), "r"(b2),
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"r"(c)
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:
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);
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return r;
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#else
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return (( int64_t(a0)*b0 +
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int64_t(a1)*b1 +
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int64_t(a2)*b2)>>16) + c;
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#endif
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}
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// b0, b1, b2 are signed 16-bit quanities
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// that have been shifted right by 'shift' bits relative to normal
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// S16.16 fixed point
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static inline GLfixed mla3a16( GLfixed a0, int32_t b1b0,
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GLfixed a1,
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GLfixed a2, int32_t b2,
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GLint shift,
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GLfixed c)
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{
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#if defined(__arm__) && !defined(__thumb__)
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GLfixed r;
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asm(
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"smulwb %0, %1, %2 \n"
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"smlawt %0, %3, %2, %0 \n"
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"smlawb %0, %4, %5, %0 \n"
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"add %0, %7, %0, lsl %6 \n"
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: "=&r"(r)
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: "r"(a0), "r"(b1b0),
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"r"(a1),
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"r"(a2), "r"(b2),
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"r"(shift),
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"r"(c)
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:
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);
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return r;
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#else
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int32_t accum;
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int16_t b0 = b1b0 & 0xffff;
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int16_t b1 = (b1b0 >> 16) & 0xffff;
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accum = int64_t(a0)*int16_t(b0) >> 16;
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accum += int64_t(a1)*int16_t(b1) >> 16;
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accum += int64_t(a2)*int16_t(b2) >> 16;
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accum = (accum << shift) + c;
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return accum;
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#endif
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}
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static inline GLfixed mla3a16_btb( GLfixed a0,
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GLfixed a1,
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GLfixed a2,
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int32_t b1b0, int32_t xxb2,
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GLint shift,
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GLfixed c)
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{
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#if defined(__arm__) && !defined(__thumb__)
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GLfixed r;
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asm(
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"smulwb %0, %1, %4 \n"
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"smlawt %0, %2, %4, %0 \n"
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"smlawb %0, %3, %5, %0 \n"
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"add %0, %7, %0, lsl %6 \n"
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: "=&r"(r)
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: "r"(a0),
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"r"(a1),
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"r"(a2),
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"r"(b1b0), "r"(xxb2),
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"r"(shift),
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"r"(c)
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:
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);
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return r;
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#else
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int32_t accum;
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int16_t b0 = b1b0 & 0xffff;
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int16_t b1 = (b1b0 >> 16) & 0xffff;
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int16_t b2 = xxb2 & 0xffff;
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accum = int64_t(a0)*int16_t(b0) >> 16;
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accum += int64_t(a1)*int16_t(b1) >> 16;
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accum += int64_t(a2)*int16_t(b2) >> 16;
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accum = (accum << shift) + c;
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return accum;
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#endif
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}
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static inline GLfixed mla3a16_btt( GLfixed a0,
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GLfixed a1,
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GLfixed a2,
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int32_t b1b0, int32_t b2xx,
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GLint shift,
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GLfixed c)
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{
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#if defined(__arm__) && !defined(__thumb__)
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GLfixed r;
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asm(
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"smulwb %0, %1, %4 \n"
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"smlawt %0, %2, %4, %0 \n"
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"smlawt %0, %3, %5, %0 \n"
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"add %0, %7, %0, lsl %6 \n"
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: "=&r"(r)
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: "r"(a0),
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"r"(a1),
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"r"(a2),
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"r"(b1b0), "r"(b2xx),
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"r"(shift),
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"r"(c)
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:
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);
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return r;
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#else
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int32_t accum;
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int16_t b0 = b1b0 & 0xffff;
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int16_t b1 = (b1b0 >> 16) & 0xffff;
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int16_t b2 = (b2xx >> 16) & 0xffff;
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accum = int64_t(a0)*int16_t(b0) >> 16;
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accum += int64_t(a1)*int16_t(b1) >> 16;
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accum += int64_t(a2)*int16_t(b2) >> 16;
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accum = (accum << shift) + c;
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return accum;
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#endif
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}
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static inline GLfixed mla3( GLfixed a0, GLfixed b0,
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GLfixed a1, GLfixed b1,
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GLfixed a2, GLfixed b2)
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{
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#if defined(__arm__) && !defined(__thumb__)
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GLfixed r;
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int32_t t;
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asm(
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"smull %0, %1, %2, %3 \n"
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"smlal %0, %1, %4, %5 \n"
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"smlal %0, %1, %6, %7 \n"
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"movs %0, %0, lsr #16 \n"
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"adc %0, %0, %1, lsl #16 \n"
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: "=&r"(r), "=&r"(t)
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: "%r"(a0), "r"(b0),
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"%r"(a1), "r"(b1),
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"%r"(a2), "r"(b2)
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: "cc"
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);
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return r;
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#else
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return (( int64_t(a0)*b0 +
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int64_t(a1)*b1 +
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int64_t(a2)*b2 + 0x8000)>>16);
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#endif
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}
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static inline GLfixed mla4( GLfixed a0, GLfixed b0,
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GLfixed a1, GLfixed b1,
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GLfixed a2, GLfixed b2,
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GLfixed a3, GLfixed b3)
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{
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#if defined(__arm__) && !defined(__thumb__)
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GLfixed r;
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int32_t t;
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asm(
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"smull %0, %1, %2, %3 \n"
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"smlal %0, %1, %4, %5 \n"
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"smlal %0, %1, %6, %7 \n"
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"smlal %0, %1, %8, %9 \n"
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"movs %0, %0, lsr #16 \n"
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"adc %0, %0, %1, lsl #16 \n"
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: "=&r"(r), "=&r"(t)
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: "%r"(a0), "r"(b0),
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"%r"(a1), "r"(b1),
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"%r"(a2), "r"(b2),
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"%r"(a3), "r"(b3)
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: "cc"
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);
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return r;
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#else
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return (( int64_t(a0)*b0 +
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int64_t(a1)*b1 +
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int64_t(a2)*b2 +
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int64_t(a3)*b3 + 0x8000)>>16);
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#endif
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}
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inline
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GLfixed dot4(const GLfixed* a, const GLfixed* b)
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{
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return mla4(a[0], b[0], a[1], b[1], a[2], b[2], a[3], b[3]);
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}
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inline
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GLfixed dot3(const GLfixed* a, const GLfixed* b)
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{
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return mla3(a[0], b[0], a[1], b[1], a[2], b[2]);
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}
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}; // namespace android
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#endif // ANDROID_OPENGLES_MATRIX_H
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