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-rw-r--r--libpixelflinger/pixelflinger.cpp843
1 files changed, 843 insertions, 0 deletions
diff --git a/libpixelflinger/pixelflinger.cpp b/libpixelflinger/pixelflinger.cpp
new file mode 100644
index 000000000..b54da0c61
--- /dev/null
+++ b/libpixelflinger/pixelflinger.cpp
@@ -0,0 +1,843 @@
+/* libs/pixelflinger/pixelflinger.cpp
+**
+** Copyright 2006, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <sys/time.h>
+
+#include <pixelflinger/pixelflinger.h>
+#include <private/pixelflinger/ggl_context.h>
+
+#include "buffer.h"
+#include "clear.h"
+#include "picker.h"
+#include "raster.h"
+#include "scanline.h"
+#include "trap.h"
+
+#include "codeflinger/GGLAssembler.h"
+#include "codeflinger/CodeCache.h"
+
+#include <stdio.h>
+
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+// 8x8 Bayer dither matrix
+static const uint8_t gDitherMatrix[GGL_DITHER_SIZE] = {
+ 0, 32, 8, 40, 2, 34, 10, 42,
+ 48, 16, 56, 24, 50, 18, 58, 26,
+ 12, 44, 4, 36, 14, 46, 6, 38,
+ 60, 28, 52, 20, 62, 30, 54, 22,
+ 3, 35, 11, 43, 1, 33, 9, 41,
+ 51, 19, 59, 27, 49, 17, 57, 25,
+ 15, 47, 7, 39, 13, 45, 5, 37,
+ 63, 31, 55, 23, 61, 29, 53, 21
+};
+
+static void ggl_init_procs(context_t* c);
+static void ggl_set_scissor(context_t* c);
+
+static void ggl_enable_blending(context_t* c, int enable);
+static void ggl_enable_scissor_test(context_t* c, int enable);
+static void ggl_enable_alpha_test(context_t* c, int enable);
+static void ggl_enable_logic_op(context_t* c, int enable);
+static void ggl_enable_dither(context_t* c, int enable);
+static void ggl_enable_stencil_test(context_t* c, int enable);
+static void ggl_enable_depth_test(context_t* c, int enable);
+static void ggl_enable_aa(context_t* c, int enable);
+static void ggl_enable_point_aa_nice(context_t* c, int enable);
+static void ggl_enable_texture2d(context_t* c, int enable);
+static void ggl_enable_w_lerp(context_t* c, int enable);
+static void ggl_enable_fog(context_t* c, int enable);
+
+static inline int min(int a, int b) CONST;
+static inline int min(int a, int b) {
+ return a < b ? a : b;
+}
+
+static inline int max(int a, int b) CONST;
+static inline int max(int a, int b) {
+ return a < b ? b : a;
+}
+
+// ----------------------------------------------------------------------------
+
+void ggl_error(context_t* c, GGLenum error)
+{
+ if (c->error == GGL_NO_ERROR)
+ c->error = error;
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_bindTexture(void* con, const GGLSurface* surface)
+{
+ GGL_CONTEXT(c, con);
+ if (surface->format != c->activeTMU->surface.format)
+ ggl_state_changed(c, GGL_TMU_STATE);
+ ggl_set_surface(c, &(c->activeTMU->surface), surface);
+}
+
+
+static void ggl_bindTextureLod(void* con, GGLuint tmu,const GGLSurface* surface)
+{
+ GGL_CONTEXT(c, con);
+ // All LODs must have the same format
+ ggl_set_surface(c, &c->state.texture[tmu].surface, surface);
+}
+
+static void ggl_colorBuffer(void* con, const GGLSurface* surface)
+{
+ GGL_CONTEXT(c, con);
+ if (surface->format != c->state.buffers.color.format)
+ ggl_state_changed(c, GGL_CB_STATE);
+
+ if (surface->width > c->state.buffers.coverageBufferSize) {
+ // allocate the coverage factor buffer
+ free(c->state.buffers.coverage);
+ c->state.buffers.coverage = (int16_t*)malloc(surface->width * 2);
+ c->state.buffers.coverageBufferSize =
+ c->state.buffers.coverage ? surface->width : 0;
+ }
+ ggl_set_surface(c, &(c->state.buffers.color), surface);
+ if (c->state.buffers.read.format == 0) {
+ ggl_set_surface(c, &(c->state.buffers.read), surface);
+ }
+ ggl_set_scissor(c);
+}
+
+static void ggl_readBuffer(void* con, const GGLSurface* surface)
+{
+ GGL_CONTEXT(c, con);
+ ggl_set_surface(c, &(c->state.buffers.read), surface);
+}
+
+static void ggl_depthBuffer(void* con, const GGLSurface* surface)
+{
+ GGL_CONTEXT(c, con);
+ if (surface->format == GGL_PIXEL_FORMAT_Z_16) {
+ ggl_set_surface(c, &(c->state.buffers.depth), surface);
+ } else {
+ c->state.buffers.depth.format = GGL_PIXEL_FORMAT_NONE;
+ ggl_enable_depth_test(c, 0);
+ }
+}
+
+static void ggl_scissor(void* con, GGLint x, GGLint y,
+ GGLsizei width, GGLsizei height)
+{
+ GGL_CONTEXT(c, con);
+ c->state.scissor.user_left = x;
+ c->state.scissor.user_top = y;
+ c->state.scissor.user_right = x + width;
+ c->state.scissor.user_bottom = y + height;
+ ggl_set_scissor(c);
+}
+
+// ----------------------------------------------------------------------------
+
+static void enable_disable(context_t* c, GGLenum name, int en)
+{
+ switch (name) {
+ case GGL_BLEND: ggl_enable_blending(c, en); break;
+ case GGL_SCISSOR_TEST: ggl_enable_scissor_test(c, en); break;
+ case GGL_ALPHA_TEST: ggl_enable_alpha_test(c, en); break;
+ case GGL_COLOR_LOGIC_OP: ggl_enable_logic_op(c, en); break;
+ case GGL_DITHER: ggl_enable_dither(c, en); break;
+ case GGL_STENCIL_TEST: ggl_enable_stencil_test(c, en); break;
+ case GGL_DEPTH_TEST: ggl_enable_depth_test(c, en); break;
+ case GGL_AA: ggl_enable_aa(c, en); break;
+ case GGL_TEXTURE_2D: ggl_enable_texture2d(c, en); break;
+ case GGL_W_LERP: ggl_enable_w_lerp(c, en); break;
+ case GGL_FOG: ggl_enable_fog(c, en); break;
+ case GGL_POINT_SMOOTH_NICE: ggl_enable_point_aa_nice(c, en); break;
+ }
+}
+
+static void ggl_enable(void* con, GGLenum name)
+{
+ GGL_CONTEXT(c, con);
+ enable_disable(c, name, 1);
+}
+
+static void ggl_disable(void* con, GGLenum name)
+{
+ GGL_CONTEXT(c, con);
+ enable_disable(c, name, 0);
+}
+
+static void ggl_enableDisable(void* con, GGLenum name, GGLboolean en)
+{
+ GGL_CONTEXT(c, con);
+ enable_disable(c, name, en ? 1 : 0);
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_shadeModel(void* con, GGLenum mode)
+{
+ GGL_CONTEXT(c, con);
+ switch (mode) {
+ case GGL_FLAT:
+ if (c->state.enables & GGL_ENABLE_SMOOTH) {
+ c->state.enables &= ~GGL_ENABLE_SMOOTH;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+ break;
+ case GGL_SMOOTH:
+ if (!(c->state.enables & GGL_ENABLE_SMOOTH)) {
+ c->state.enables |= GGL_ENABLE_SMOOTH;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+ break;
+ default:
+ ggl_error(c, GGL_INVALID_ENUM);
+ }
+}
+
+static void ggl_color4xv(void* con, const GGLclampx* color)
+{
+ GGL_CONTEXT(c, con);
+ c->shade.r0 = gglFixedToIteratedColor(color[0]);
+ c->shade.g0 = gglFixedToIteratedColor(color[1]);
+ c->shade.b0 = gglFixedToIteratedColor(color[2]);
+ c->shade.a0 = gglFixedToIteratedColor(color[3]);
+}
+
+static void ggl_colorGrad12xv(void* con, const GGLcolor* grad)
+{
+ GGL_CONTEXT(c, con);
+ // it is very important to round the iterated value here because
+ // the rasterizer doesn't clamp them, therefore the iterated value
+ //must absolutely be correct.
+ // GGLColor is encoded as 8.16 value
+ const int32_t round = 0x8000;
+ c->shade.r0 = grad[ 0] + round;
+ c->shade.drdx = grad[ 1];
+ c->shade.drdy = grad[ 2];
+ c->shade.g0 = grad[ 3] + round;
+ c->shade.dgdx = grad[ 4];
+ c->shade.dgdy = grad[ 5];
+ c->shade.b0 = grad[ 6] + round;
+ c->shade.dbdx = grad[ 7];
+ c->shade.dbdy = grad[ 8];
+ c->shade.a0 = grad[ 9] + round;
+ c->shade.dadx = grad[10];
+ c->shade.dady = grad[11];
+}
+
+static void ggl_zGrad3xv(void* con, const GGLfixed32* grad)
+{
+ GGL_CONTEXT(c, con);
+ // z iterators are encoded as 0.32 fixed point and the z-buffer
+ // holds 16 bits, the rounding value is 0x8000.
+ const uint32_t round = 0x8000;
+ c->shade.z0 = grad[0] + round;
+ c->shade.dzdx = grad[1];
+ c->shade.dzdy = grad[2];
+}
+
+static void ggl_wGrad3xv(void* con, const GGLfixed* grad)
+{
+ GGL_CONTEXT(c, con);
+ c->shade.w0 = grad[0];
+ c->shade.dwdx = grad[1];
+ c->shade.dwdy = grad[2];
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_fogGrad3xv(void* con, const GGLfixed* grad)
+{
+ GGL_CONTEXT(c, con);
+ c->shade.f0 = grad[0];
+ c->shade.dfdx = grad[1];
+ c->shade.dfdy = grad[2];
+}
+
+static void ggl_fogColor3xv(void* con, const GGLclampx* color)
+{
+ GGL_CONTEXT(c, con);
+ const int32_t r = gglClampx(color[0]);
+ const int32_t g = gglClampx(color[1]);
+ const int32_t b = gglClampx(color[2]);
+ c->state.fog.color[GGLFormat::RED] = (r - (r>>8))>>8;
+ c->state.fog.color[GGLFormat::GREEN]= (g - (g>>8))>>8;
+ c->state.fog.color[GGLFormat::BLUE] = (b - (b>>8))>>8;
+}
+
+static void ggl_enable_fog(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_FOG)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_FOG;
+ else c->state.enables &= ~GGL_ENABLE_FOG;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_blendFunc(void* con, GGLenum src, GGLenum dst)
+{
+ GGL_CONTEXT(c, con);
+ c->state.blend.src = src;
+ c->state.blend.src_alpha = src;
+ c->state.blend.dst = dst;
+ c->state.blend.dst_alpha = dst;
+ c->state.blend.alpha_separate = 0;
+ if (c->state.enables & GGL_ENABLE_BLENDING) {
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+static void ggl_blendFuncSeparate(void* con,
+ GGLenum src, GGLenum dst,
+ GGLenum srcAlpha, GGLenum dstAplha)
+{
+ GGL_CONTEXT(c, con);
+ c->state.blend.src = src;
+ c->state.blend.src_alpha = srcAlpha;
+ c->state.blend.dst = dst;
+ c->state.blend.dst_alpha = dstAplha;
+ c->state.blend.alpha_separate = 1;
+ if (c->state.enables & GGL_ENABLE_BLENDING) {
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_texEnvi(void* con, GGLenum target,
+ GGLenum pname,
+ GGLint param)
+{
+ GGL_CONTEXT(c, con);
+ if (target != GGL_TEXTURE_ENV || pname != GGL_TEXTURE_ENV_MODE) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+ switch (param) {
+ case GGL_REPLACE:
+ case GGL_MODULATE:
+ case GGL_DECAL:
+ case GGL_BLEND:
+ case GGL_ADD:
+ if (c->activeTMU->env != param) {
+ c->activeTMU->env = param;
+ ggl_state_changed(c, GGL_TMU_STATE);
+ }
+ break;
+ default:
+ ggl_error(c, GGL_INVALID_ENUM);
+ }
+}
+
+static void ggl_texEnvxv(void* con, GGLenum target,
+ GGLenum pname, const GGLfixed* params)
+{
+ GGL_CONTEXT(c, con);
+ if (target != GGL_TEXTURE_ENV) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+ switch (pname) {
+ case GGL_TEXTURE_ENV_MODE:
+ ggl_texEnvi(con, target, pname, params[0]);
+ break;
+ case GGL_TEXTURE_ENV_COLOR: {
+ uint8_t* const color = c->activeTMU->env_color;
+ const GGLclampx r = gglClampx(params[0]);
+ const GGLclampx g = gglClampx(params[1]);
+ const GGLclampx b = gglClampx(params[2]);
+ const GGLclampx a = gglClampx(params[3]);
+ color[0] = (a-(a>>8))>>8;
+ color[1] = (r-(r>>8))>>8;
+ color[2] = (g-(g>>8))>>8;
+ color[3] = (b-(b>>8))>>8;
+ break;
+ }
+ default:
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+}
+
+
+static void ggl_texParameteri(void* con,
+ GGLenum target,
+ GGLenum pname,
+ GGLint param)
+{
+ GGL_CONTEXT(c, con);
+ if (target != GGL_TEXTURE_2D) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+
+ if (param == GGL_CLAMP_TO_EDGE)
+ param = GGL_CLAMP;
+
+ uint16_t* what = 0;
+ switch (pname) {
+ case GGL_TEXTURE_WRAP_S:
+ if ((param == GGL_CLAMP) ||
+ (param == GGL_REPEAT)) {
+ what = &c->activeTMU->s_wrap;
+ }
+ break;
+ case GGL_TEXTURE_WRAP_T:
+ if ((param == GGL_CLAMP) ||
+ (param == GGL_REPEAT)) {
+ what = &c->activeTMU->t_wrap;
+ }
+ break;
+ case GGL_TEXTURE_MIN_FILTER:
+ if ((param == GGL_NEAREST) ||
+ (param == GGL_NEAREST_MIPMAP_NEAREST) ||
+ (param == GGL_NEAREST_MIPMAP_LINEAR)) {
+ what = &c->activeTMU->min_filter;
+ param = GGL_NEAREST;
+ }
+ if ((param == GGL_LINEAR) ||
+ (param == GGL_LINEAR_MIPMAP_NEAREST) ||
+ (param == GGL_LINEAR_MIPMAP_LINEAR)) {
+ what = &c->activeTMU->min_filter;
+ param = GGL_LINEAR;
+ }
+ break;
+ case GGL_TEXTURE_MAG_FILTER:
+ if ((param == GGL_NEAREST) ||
+ (param == GGL_LINEAR)) {
+ what = &c->activeTMU->mag_filter;
+ }
+ break;
+ }
+
+ if (!what) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+
+ if (*what != param) {
+ *what = param;
+ ggl_state_changed(c, GGL_TMU_STATE);
+ }
+}
+
+static void ggl_texCoordGradScale8xv(void* con, GGLint tmu, const int32_t* grad)
+{
+ GGL_CONTEXT(c, con);
+ texture_t& u = c->state.texture[tmu];
+ u.shade.is0 = grad[0];
+ u.shade.idsdx = grad[1];
+ u.shade.idsdy = grad[2];
+ u.shade.it0 = grad[3];
+ u.shade.idtdx = grad[4];
+ u.shade.idtdy = grad[5];
+ u.shade.sscale= grad[6];
+ u.shade.tscale= grad[7];
+}
+
+static void ggl_texCoord2x(void* con, GGLfixed s, GGLfixed t)
+{
+ GGL_CONTEXT(c, con);
+ c->activeTMU->shade.is0 = s;
+ c->activeTMU->shade.it0 = t;
+ c->activeTMU->shade.sscale= 0;
+ c->activeTMU->shade.tscale= 0;
+}
+
+static void ggl_texCoord2i(void* con, GGLint s, GGLint t)
+{
+ ggl_texCoord2x(con, s<<16, t<<16);
+}
+
+static void ggl_texGeni(void* con, GGLenum coord, GGLenum pname, GGLint param)
+{
+ GGL_CONTEXT(c, con);
+ if (pname != GGL_TEXTURE_GEN_MODE) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+
+ uint32_t* coord_ptr = 0;
+ if (coord == GGL_S) coord_ptr = &(c->activeTMU->s_coord);
+ else if (coord == GGL_T) coord_ptr = &(c->activeTMU->t_coord);
+
+ if (coord_ptr) {
+ if (*coord_ptr != uint32_t(param)) {
+ *coord_ptr = uint32_t(param);
+ ggl_state_changed(c, GGL_TMU_STATE);
+ }
+ } else {
+ ggl_error(c, GGL_INVALID_ENUM);
+ }
+}
+
+static void ggl_activeTexture(void* con, GGLuint tmu)
+{
+ GGL_CONTEXT(c, con);
+ if (tmu >= GGLuint(GGL_TEXTURE_UNIT_COUNT)) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+ c->activeTMUIndex = tmu;
+ c->activeTMU = &(c->state.texture[tmu]);
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_colorMask(void* con, GGLboolean r,
+ GGLboolean g,
+ GGLboolean b,
+ GGLboolean a)
+{
+ GGL_CONTEXT(c, con);
+ int mask = 0;
+ if (a) mask |= 1 << GGLFormat::ALPHA;
+ if (r) mask |= 1 << GGLFormat::RED;
+ if (g) mask |= 1 << GGLFormat::GREEN;
+ if (b) mask |= 1 << GGLFormat::BLUE;
+ if (c->state.mask.color != mask) {
+ c->state.mask.color = mask;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+static void ggl_depthMask(void* con, GGLboolean flag)
+{
+ GGL_CONTEXT(c, con);
+ if (c->state.mask.depth != flag?1:0) {
+ c->state.mask.depth = flag?1:0;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+static void ggl_stencilMask(void* con, GGLuint mask)
+{
+ GGL_CONTEXT(c, con);
+ if (c->state.mask.stencil != mask) {
+ c->state.mask.stencil = mask;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_alphaFuncx(void* con, GGLenum func, GGLclampx ref)
+{
+ GGL_CONTEXT(c, con);
+ if ((func < GGL_NEVER) || (func > GGL_ALWAYS)) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+ c->state.alpha_test.ref = gglFixedToIteratedColor(gglClampx(ref));
+ if (c->state.alpha_test.func != func) {
+ c->state.alpha_test.func = func;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_depthFunc(void* con, GGLenum func)
+{
+ GGL_CONTEXT(c, con);
+ if ((func < GGL_NEVER) || (func > GGL_ALWAYS)) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+ if (c->state.depth_test.func != func) {
+ c->state.depth_test.func = func;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+// ----------------------------------------------------------------------------
+
+static void ggl_logicOp(void* con, GGLenum opcode)
+{
+ GGL_CONTEXT(c, con);
+ if ((opcode < GGL_CLEAR) || (opcode > GGL_SET)) {
+ ggl_error(c, GGL_INVALID_ENUM);
+ return;
+ }
+ if (c->state.logic_op.opcode != opcode) {
+ c->state.logic_op.opcode = opcode;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+
+// ----------------------------------------------------------------------------
+
+void ggl_set_scissor(context_t* c)
+{
+ if (c->state.enables & GGL_ENABLE_SCISSOR_TEST) {
+ const int32_t l = c->state.scissor.user_left;
+ const int32_t t = c->state.scissor.user_top;
+ const int32_t r = c->state.scissor.user_right;
+ const int32_t b = c->state.scissor.user_bottom;
+ c->state.scissor.left = max(0, l);
+ c->state.scissor.right = min(c->state.buffers.color.width, r);
+ c->state.scissor.top = max(0, t);
+ c->state.scissor.bottom = min(c->state.buffers.color.height, b);
+ } else {
+ c->state.scissor.left = 0;
+ c->state.scissor.top = 0;
+ c->state.scissor.right = c->state.buffers.color.width;
+ c->state.scissor.bottom = c->state.buffers.color.height;
+ }
+}
+
+void ggl_enable_blending(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_BLENDING)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_BLENDING;
+ else c->state.enables &= ~GGL_ENABLE_BLENDING;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+void ggl_enable_scissor_test(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_SCISSOR_TEST)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_SCISSOR_TEST;
+ else c->state.enables &= ~GGL_ENABLE_SCISSOR_TEST;
+ ggl_set_scissor(c);
+ }
+}
+
+void ggl_enable_alpha_test(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_ALPHA_TEST)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_ALPHA_TEST;
+ else c->state.enables &= ~GGL_ENABLE_ALPHA_TEST;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+void ggl_enable_logic_op(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_LOGIC_OP)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_LOGIC_OP;
+ else c->state.enables &= ~GGL_ENABLE_LOGIC_OP;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+void ggl_enable_dither(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_DITHER)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_DITHER;
+ else c->state.enables &= ~GGL_ENABLE_DITHER;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+void ggl_enable_stencil_test(context_t* c, int enable)
+{
+}
+
+void ggl_enable_depth_test(context_t* c, int enable)
+{
+ if (c->state.buffers.depth.format == 0)
+ enable = 0;
+ const int e = (c->state.enables & GGL_ENABLE_DEPTH_TEST)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_DEPTH_TEST;
+ else c->state.enables &= ~GGL_ENABLE_DEPTH_TEST;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+void ggl_enable_aa(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_AA)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_AA;
+ else c->state.enables &= ~GGL_ENABLE_AA;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+void ggl_enable_point_aa_nice(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_POINT_AA_NICE)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_POINT_AA_NICE;
+ else c->state.enables &= ~GGL_ENABLE_POINT_AA_NICE;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+void ggl_enable_w_lerp(context_t* c, int enable)
+{
+ const int e = (c->state.enables & GGL_ENABLE_W)?1:0;
+ if (e != enable) {
+ if (enable) c->state.enables |= GGL_ENABLE_W;
+ else c->state.enables &= ~GGL_ENABLE_W;
+ ggl_state_changed(c, GGL_PIXEL_PIPELINE_STATE);
+ }
+}
+
+void ggl_enable_texture2d(context_t* c, int enable)
+{
+ if (c->activeTMU->enable != enable) {
+ const uint32_t tmu = c->activeTMUIndex;
+ c->activeTMU->enable = enable;
+ const uint32_t mask = 1UL << tmu;
+ if (enable) c->state.enabled_tmu |= mask;
+ else c->state.enabled_tmu &= ~mask;
+ if (c->state.enabled_tmu) c->state.enables |= GGL_ENABLE_TMUS;
+ else c->state.enables &= ~GGL_ENABLE_TMUS;
+ ggl_state_changed(c, GGL_TMU_STATE);
+ }
+}
+
+
+// ----------------------------------------------------------------------------
+
+int64_t ggl_system_time()
+{
+#if defined(HAVE_POSIX_CLOCKS)
+ struct timespec t;
+ t.tv_sec = t.tv_nsec = 0;
+ clock_gettime(CLOCK_THREAD_CPUTIME_ID, &t);
+ return int64_t(t.tv_sec)*1000000000LL + t.tv_nsec;
+#else
+ // we don't support the clocks here.
+ struct timeval t;
+ t.tv_sec = t.tv_usec = 0;
+ gettimeofday(&t, NULL);
+ return int64_t(t.tv_sec)*1000000000LL + int64_t(t.tv_usec)*1000LL;
+#endif
+}
+
+// ----------------------------------------------------------------------------
+
+void ggl_init_procs(context_t* c)
+{
+ GGLContext& procs = *(GGLContext*)c;
+ GGL_INIT_PROC(procs, scissor);
+ GGL_INIT_PROC(procs, activeTexture);
+ GGL_INIT_PROC(procs, bindTexture);
+ GGL_INIT_PROC(procs, bindTextureLod);
+ GGL_INIT_PROC(procs, colorBuffer);
+ GGL_INIT_PROC(procs, readBuffer);
+ GGL_INIT_PROC(procs, depthBuffer);
+ GGL_INIT_PROC(procs, enable);
+ GGL_INIT_PROC(procs, disable);
+ GGL_INIT_PROC(procs, enableDisable);
+ GGL_INIT_PROC(procs, shadeModel);
+ GGL_INIT_PROC(procs, color4xv);
+ GGL_INIT_PROC(procs, colorGrad12xv);
+ GGL_INIT_PROC(procs, zGrad3xv);
+ GGL_INIT_PROC(procs, wGrad3xv);
+ GGL_INIT_PROC(procs, fogGrad3xv);
+ GGL_INIT_PROC(procs, fogColor3xv);
+ GGL_INIT_PROC(procs, blendFunc);
+ GGL_INIT_PROC(procs, blendFuncSeparate);
+ GGL_INIT_PROC(procs, texEnvi);
+ GGL_INIT_PROC(procs, texEnvxv);
+ GGL_INIT_PROC(procs, texParameteri);
+ GGL_INIT_PROC(procs, texCoord2i);
+ GGL_INIT_PROC(procs, texCoord2x);
+ GGL_INIT_PROC(procs, texCoordGradScale8xv);
+ GGL_INIT_PROC(procs, texGeni);
+ GGL_INIT_PROC(procs, colorMask);
+ GGL_INIT_PROC(procs, depthMask);
+ GGL_INIT_PROC(procs, stencilMask);
+ GGL_INIT_PROC(procs, alphaFuncx);
+ GGL_INIT_PROC(procs, depthFunc);
+ GGL_INIT_PROC(procs, logicOp);
+ ggl_init_clear(c);
+}
+
+void ggl_init_context(context_t* c)
+{
+ memset(c, 0, sizeof(context_t));
+ ggl_init_procs(c);
+ ggl_init_trap(c);
+ ggl_init_scanline(c);
+ ggl_init_texture(c);
+ ggl_init_picker(c);
+ ggl_init_raster(c);
+ c->formats = gglGetPixelFormatTable();
+ c->state.blend.src = GGL_ONE;
+ c->state.blend.dst = GGL_ZERO;
+ c->state.blend.src_alpha = GGL_ONE;
+ c->state.blend.dst_alpha = GGL_ZERO;
+ c->state.mask.color = 0xF;
+ c->state.mask.depth = 0;
+ c->state.mask.stencil = 0xFFFFFFFF;
+ c->state.logic_op.opcode = GGL_COPY;
+ c->state.alpha_test.func = GGL_ALWAYS;
+ c->state.depth_test.func = GGL_LESS;
+ c->state.depth_test.clearValue = FIXED_ONE;
+ c->shade.w0 = FIXED_ONE;
+ memcpy(c->ditherMatrix, gDitherMatrix, sizeof(gDitherMatrix));
+}
+
+void ggl_uninit_context(context_t* c)
+{
+ ggl_uninit_scanline(c);
+}
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+// ----------------------------------------------------------------------------
+
+
+
+using namespace android;
+
+ssize_t gglInit(GGLContext** context)
+{
+ void* const base = malloc(sizeof(context_t) + 32);
+ if (base) {
+ // always align the context on cache lines
+ context_t *c = (context_t *)((ptrdiff_t(base)+31) & ~0x1FL);
+ ggl_init_context(c);
+ c->base = base;
+ *context = (GGLContext*)c;
+ } else {
+ return -1;
+ }
+ return 0;
+}
+
+ssize_t gglUninit(GGLContext* con)
+{
+ GGL_CONTEXT(c, (void*)con);
+ ggl_uninit_context(c);
+ free(c->base);
+ return 0;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-19 00:26:26 +0000