[Spice-devel] [PATCH 12/17] Remove unused backup file
Daniel P. Berrange
berrange at redhat.com
Tue Jan 10 07:58:33 PST 2012
From: "Daniel P. Berrange" <berrange at redhat.com>
The common/glc.c.save file appears to be a obsolete copy of
glc.c
---
common/glc.c.save | 1413 -----------------------------------------------------
1 files changed, 0 insertions(+), 1413 deletions(-)
delete mode 100644 common/glc.c.save
diff --git a/common/glc.c.save b/common/glc.c.save
deleted file mode 100644
index 1958110..0000000
--- a/common/glc.c.save
+++ /dev/null
@@ -1,1413 +0,0 @@
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-
-#include <GL/gl.h>
-#include <GL/glu.h>
-
-#ifdef WIN32
-#include "glext.h"
-#include "wglext.h"
-#endif
-
-#include "glc.h"
-
-#define TRUE 1
-#define FALSE 0
-
-#define ASSERT(x) if (!(x)) {printf("%s: assert failed %s\n", __FUNCTION__, #x); for (;;);}
-
-#define GLC_ERROR_TETS { \
- GLenum gl_err; glFlush(); \
- if ((gl_err = glGetError()) != GL_NO_ERROR) { \
- printf("%s[%d]: opengl error: %s\n", __FUNCTION__, __LINE__, gluErrorString(gl_err)); \
- for(;;); \
- } \
-}
-
-#define WARN_ONCE(x) { \
- static int warn = TRUE; \
- if (warn) { \
- printf x; \
- warn = FALSE; \
- } \
-}
-
-#define TESS_VERTEX_ALLOC_BUNCH 20
-
-typedef struct InternaCtx InternaCtx;
-typedef struct InternalPat {
- InternaCtx *owner;
- int refs;
- GLuint texture;
- int x_orign;
- int y_orign;
- int width;
- int height;
-} InternalPat;
-
-typedef struct Pathpath {
- int start_point;
- int num_segments;
-} Path;
-
-enum {
- GLC_PATH_SEG_LINES,
- GLC_PATH_SEG_BEIZER,
-};
-
-//todo: flatten cache
-typedef struct PathSegment {
- int type;
- int count;
-} PathSegment;
-
-typedef struct PathPoint {
- double x;
- double y;
- double z;
-} PathPoint;
-
-typedef GLdouble Vertex[3];
-
-typedef struct InternalPath {
- InternaCtx *owner;
-
- Path *paths;
- int paths_size;
- int paths_pos;
-
- PathSegment *segments;
- int segments_size;
- int segments_pos;
-
- PathPoint *points;
- int points_size;
- int points_pos;
-
- Path *current_path;
- PathSegment *current_segment;
-
-} InternalPath;
-
-typedef struct TassVertex TassVertex;
-struct TassVertex {
- PathPoint point;
- TassVertex *list_link;
- TassVertex *next;
-};
-
-typedef struct TassVertexBuf TassVertexBuf;
-struct TassVertexBuf {
- TassVertexBuf *next;
- TassVertex vertexs[0];
-};
-
-struct InternaCtx {
- int draw_mode;
- int stencil_refs;
- int stencil_mask;
- int width;
- int height;
- GLfloat line_width;
- InternalPat *pat;
- int max_texture_size;
- GLUtesselator* tesselator;
- TassVertex *free_tess_vertex;
- TassVertex *used_tess_vertex;
- TassVertexBuf *vertex_bufs;
-#ifdef WIN32
- PFNGLBLENDEQUATIONPROC glBlendEquation;
-#endif
-};
-
-#define Y(y) -(y)
-#define VERTEX2(x, y) glVertex2d(x, Y(y))
-
-static void fill_rect(InternaCtx *ctx, void *rect);
-static void fill_path(InternaCtx *ctx, void *path);
-static void fill_mask(InternaCtx *ctx, int x_dest, int y_dest, int width, int height, int stride,
- const uint8_t *bitmap);
-static void set_pat(InternaCtx *ctx, InternalPat *pat);
-
-static inline void *zmalloc(size_t size)
-{
- return calloc(1, size);
-}
-
-static inline void set_raster_pos(InternaCtx *ctx, int x, int y)
-{
- if (x >= 0 && y >= 0 && x < ctx->width && y < ctx->height) {
- glRasterPos2i(x, Y(y));
- return;
- }
- glRasterPos2i(0, 0);
- glBitmap(0, 0, 0, 0, (GLfloat)x, (GLfloat)Y(y), NULL);
-}
-
-static TassVertex *alloc_tess_vertex(InternaCtx *ctx)
-{
- TassVertex *vertex;
-
- if (!ctx->free_tess_vertex) {
- TassVertexBuf *buf;
- int i;
-
- if (!(buf = (TassVertexBuf *)malloc(sizeof(TassVertexBuf) +
- sizeof(TassVertex) * TESS_VERTEX_ALLOC_BUNCH))) {
- //warn
- return NULL;
- }
- buf->next = ctx->vertex_bufs;
- ctx->vertex_bufs = buf;
- for (i = 0; i < TESS_VERTEX_ALLOC_BUNCH; i++) {
- buf->vertexs[i].point.z = 0;
- buf->vertexs[i].next = ctx->free_tess_vertex;
- ctx->free_tess_vertex = &buf->vertexs[i];
- }
- }
-
- vertex = ctx->free_tess_vertex;
- ctx->free_tess_vertex = vertex->next;
- vertex->next = ctx->used_tess_vertex;
- ctx->used_tess_vertex = vertex;
- return vertex;
-}
-
-static void reset_tass_vertex(InternaCtx *ctx)
-{
- TassVertex *vertex;
- while ((vertex = ctx->used_tess_vertex)) {
- ctx->used_tess_vertex = vertex->next;
- vertex->next = ctx->free_tess_vertex;
- ctx->free_tess_vertex = vertex;
- }
-}
-
-static void free_tass_vertex_bufs(InternaCtx *ctx)
-{
- TassVertexBuf *buf;
-
- ctx->used_tess_vertex = NULL;
- ctx->free_tess_vertex = NULL;
- while ((buf = ctx->vertex_bufs)) {
- ctx->vertex_bufs = buf->next;
- free(buf);
- }
-}
-
-//naiev bezier flattener
-static TassVertex *bezier_flattener(InternaCtx *ctx, PathPoint *points)
-{
- double ax, bx, cx;
- double ay, by, cy;
- const int num_points = 30;
- double dt;
- int i;
-
- TassVertex *vertex_list = NULL;
- TassVertex *curr_vertex;
-
- for (i = 0; i < num_points - 2; i++) {
- TassVertex *vertex;
-
- if (!(vertex = alloc_tess_vertex(ctx))) {
- //warn
- return NULL;
- }
- vertex->list_link = vertex_list;
- vertex_list = vertex;
- }
-
- curr_vertex = vertex_list;
-
- cx = 3.0 * (points[1].x - points[0].x);
- bx = 3.0 * (points[2].x - points[1].x) - cx;
- ax = points[3].x - points[0].x - cx - bx;
-
- cy = 3.0 * (points[1].y - points[0].y);
- by = 3.0 * (points[2].y - points[1].y) - cy;
- ay = points[3].y - points[0].y - cy - by;
-
- dt = 1.0 / ( num_points - 1 );
-
- for( i = 1; i < num_points - 1; i++, curr_vertex = curr_vertex->list_link) {
- double tSquared, tCubed;
- double t;
- t = i * dt;
-
- tSquared = t * t;
- tCubed = tSquared * t;
-
- curr_vertex->point.x = (ax * tCubed) + (bx * tSquared) + (cx * t) + points[0].x;
- curr_vertex->point.y = (ay * tCubed) + (by * tSquared) + (cy * t) + points[0].y;
- }
-
- return vertex_list;
-}
-
-#define MORE_X(path, Type, name) {\
- Type *name;\
- \
- if (!(name = (Type *)zmalloc(sizeof(*name) * path->name##_size * 2))) {\
- return FALSE;\
- }\
- memcpy(name, path->name, sizeof(*name) * path->name##_size);\
- free(path->name);\
- path->name = name;\
- path->name##_size *= 2;\
- return TRUE;\
-}
-
-static int more_points(InternalPath *path)
-{
- MORE_X(path, PathPoint, points);
-}
-
-static int more_segments(InternalPath *path)
-{
- MORE_X(path, PathSegment, segments);
-}
-
-static int more_paths(InternalPath *path)
-{
- MORE_X(path, Path, paths);
-}
-
-static inline void put_point(InternalPath *path, double x, double y)
-{
- path->points[path->points_pos].x = x;
- path->points[path->points_pos++].y = Y(y + 0.5);
- path->points[path->points_pos].z = 0;
-}
-
-void glc_path_move_to(GLCPath path, double x, double y)
-{
- InternalPath *internal = (InternalPath *)path;
-
- ASSERT(internal);
-
- if (internal->current_segment) {
- internal->current_segment = NULL;
- internal->current_path = NULL;
- if (internal->points_pos == internal->points_size && !more_points(internal)) {
- //warn
- return;
- }
- internal->points_pos++;
- }
- internal->points[internal->points_pos - 1].x = x;
- internal->points[internal->points_pos - 1].y = Y(y + 0.5);
- internal->points[internal->points_pos - 1].z = 0;
-}
-
-static int add_segment_common(InternalPath *internal, int type, int num_points)
-{
- if (internal->points_size - internal->points_pos < num_points && !more_points(internal)) {
- //warn
- return FALSE;
- }
-
- if (internal->current_segment) {
- if (internal->current_segment->type == type) {
- internal->current_segment->count++;
- return TRUE;
- }
- if (internal->segments_pos == internal->segments_size && !more_segments(internal)) {
- //warn
- return FALSE;
- }
- internal->current_segment = &internal->segments[internal->segments_pos++];
- internal->current_segment->type = type;
- internal->current_segment->count = 1;
- internal->current_path->num_segments++;
- return TRUE;
- }
-
- if (internal->paths_pos == internal->paths_size && !more_paths(internal)) {
- //warn
- return FALSE;
- }
-
- if (internal->segments_pos == internal->segments_size && !more_segments(internal)) {
- //warn
- return FALSE;
- }
-
- internal->current_path = &internal->paths[internal->paths_pos++];
- internal->current_path->start_point = internal->points_pos - 1;
- internal->current_path->num_segments = 1;
- internal->current_segment = &internal->segments[internal->segments_pos++];
- internal->current_segment->type = type;
- internal->current_segment->count = 1;
- return TRUE;
-}
-
-void glc_path_line_to(GLCPath path, double x, double y)
-{
- InternalPath *internal = (InternalPath *)path;
-
- ASSERT(internal);
-
- if (!add_segment_common(internal, GLC_PATH_SEG_LINES, 1)) {
- return;
- }
- put_point(internal, x, y);
-}
-
-void glc_path_curve_to(GLCPath path, double p1_x, double p1_y, double p2_x, double p2_y,
- double p3_x, double p3_y)
-{
- InternalPath *internal = (InternalPath *)path;
-
- ASSERT(internal);
-
- if (!add_segment_common(internal, GLC_PATH_SEG_BEIZER, 3)) {
- return;
- }
- put_point(internal, p1_x, p1_y);
- put_point(internal, p2_x, p2_y);
- put_point(internal, p3_x, p3_y);
-}
-
-void glc_path_close(GLCPath path)
-{
- InternalPath *internal = (InternalPath *)path;
-
- ASSERT(internal);
- if (!internal->current_path) {
- return;
- }
- PathPoint *end_point = &internal->points[internal->current_path->start_point];
- glc_path_line_to(path, end_point->x, Y(end_point->y));
- glc_path_move_to(path, end_point->x, Y(end_point->y));
-}
-
-void glc_path_cleare(GLCPath path)
-{
- InternalPath *internal = (InternalPath *)path;
-
- ASSERT(internal);
- internal->paths_pos = internal->segments_pos = 0;
- internal->current_segment = NULL;
- internal->current_path = NULL;
-
- internal->points[0].x = 0;
- internal->points[0].y = 0;
- internal->points_pos = 1;
-}
-
-GLCPath glc_path_create(GLCCtx glc)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- InternalPath *path;
-
- ASSERT(ctx);
- if (!(path = (InternalPath *)zmalloc(sizeof(*path)))) {
- return NULL;
- }
-
- path->paths = (Path *)malloc(sizeof(*path->paths) * (path->paths_size = 2));
- if (!path->paths) {
- goto error_1;
- }
-
- path->segments = (PathSegment *)malloc(sizeof(*path->segments) * (path->segments_size = 4));
- if (!path->segments) {
- goto error_2;
- }
-
- path->points = (PathPoint *)malloc(sizeof(*path->points) * (path->points_size = 20));
- if (!path->points) {
- goto error_3;
- }
-
- path->owner = ctx;
- path->points_pos = 1;
- return path;
-
-error_3:
- free(path->segments);
-
-error_2:
- free(path->paths);
-
-error_1:
- free(path);
-
- return NULL;
-}
-
-void glc_path_destroy(GLCPath path)
-{
- InternalPath *internal = (InternalPath *)path;
-
- if (!path) {
- return;
- }
-
- free(internal->points);
- free(internal->segments);
- free(internal->paths);
- free(internal);
-}
-
-static inline void unref_pat(InternalPat *pat)
-{
- if (!pat) {
- return;
- }
- ASSERT(pat->refs > 0);
- if (--pat->refs == 0) {
- glFinish();
- glDeleteTextures(1, &pat->texture);
- free(pat);
- }
- GLC_ERROR_TETS;
-}
-
-static inline InternalPat *ref_pat(InternalPat *pat)
-{
- pat->refs++;
- return pat;
-}
-
-#ifdef WIN32
-static inline int find_msb(uint32_t val)
-{
- uint32_t r;
- __asm {
- bsr eax, val
- jnz found
- mov eax, -1
-
- found:
- mov r, eax
- }
- return r + 1;
-}
-#else
-static inline int find_msb(uint32_t val)
-{
- int ret;
-
- asm("bsrl %1,%0\n\t"
- "jnz 1f\n\t"
- "movl $-1,%0\n"
- "1:"
- : "=r"(ret) : "r"(val));
- return ret + 1;
-}
-#endif
-
-static int to_pwoer_two(uint32_t val)
-{
- if ((val & (val - 1)) == 0) {
- return val;
- }
- return 1 << find_msb(val);
-}
-
-static void scale(uint32_t *dest, uint32_t dest_width, uint32_t dest_height,
- uint32_t *src, uint32_t src_width, uint32_t src_height, int src_stride)
-{
- double x_scale = (double)src_width / dest_width;
- double y_scale = (double)src_height / dest_height;
- uint32_t i;
- uint32_t j;
- int prev_row = -1;
-
- for (i = 0; i < dest_height; i++) {
- int row = (int)(y_scale * i);
- if (row == prev_row) {
- memcpy(dest, dest - dest_width, dest_width * sizeof(uint32_t));
- dest += dest_width;
- continue;
- }
- for (j = 0; j < dest_width; j++) {
- int col = (int)(x_scale * j);
- *(dest++) = *(src + col);
- }
- prev_row = row;
- src = (uint32_t *)((uint8_t *)src + src_stride);
- }
-}
-
-static inline void init_pattern(InternalPat *pat, int x_orign, int y_orign, const GLCImage *image)
-{
- InternaCtx *ctx = pat->owner;
- uint32_t *tmp_pixmap = NULL;
- int width;
- int height;
- int width2;
- int height2;
-
- const int pix_bytes = 4;
-
- ASSERT(image->format == GLC_IMAGE_RGB32); //for now
-
- width = image->width;
- height = image->height;
- width2 = to_pwoer_two(width);
- height2 = to_pwoer_two(height);
-
- ASSERT(width > 0 && height > 0);
- ASSERT(width > 0 && width <= pat->owner->max_texture_size);
- ASSERT(height > 0 && height <= pat->owner->max_texture_size);
-
- if (width2 != width || height2 != height) {
- if (!(tmp_pixmap = (uint32_t *)malloc(width2 * height2 * sizeof(uint32_t)))) {
- //warn
- return;
- }
- scale(tmp_pixmap, width2, height2, (uint32_t *)image->pixels, width, height, image->stride);
- }
-
- glBindTexture(GL_TEXTURE_2D, pat->texture);
-
- //glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
-
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-
- if (tmp_pixmap) {
- glPixelStorei(GL_UNPACK_ROW_LENGTH, width2);
- glTexImage2D(GL_TEXTURE_2D, 0, 4, width2, height2, 0, GL_BGRA, GL_UNSIGNED_BYTE,
- tmp_pixmap);
- free(tmp_pixmap);
- } else {
- ASSERT(image->stride % pix_bytes == 0);
- glPixelStorei(GL_UNPACK_ROW_LENGTH, image->stride / pix_bytes);
- glTexImage2D(GL_TEXTURE_2D, 0, 4, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE,
- image->pixels);
- }
-
- GLC_ERROR_TETS;
- pat->x_orign = x_orign % width;
- pat->y_orign = y_orign % height;
- pat->width = width;
- pat->height = height;
-
- if (ctx->pat == pat) {
- set_pat(pat->owner, pat);
- } else if (ctx->pat) {
- glBindTexture(GL_TEXTURE_2D, ctx->pat->texture);
- }
-}
-
-GLCPattern glc_pattern_create(GLCCtx glc, int x_orign, int y_orign, const GLCImage *image)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- InternalPat *pat;
-
- ASSERT(ctx && image);
-
- if (!(pat = (InternalPat *)zmalloc(sizeof(*pat)))) {
- return NULL;
- }
- pat->refs = 1;
- pat->owner = ctx;
- glGenTextures(1, &pat->texture);
- init_pattern(pat, x_orign, y_orign, image);
- return pat;
-}
-
-void glc_pattern_set(GLCPattern pattern, int x_orign, int y_orign, const GLCImage *image)
-{
- InternalPat *pat = (InternalPat *)pattern;
- ASSERT(pat && pat->owner);
-
- glFinish();
- init_pattern(pat, x_orign, y_orign, image);
-}
-
-void glc_pattern_destroy(GLCPattern pat)
-{
- unref_pat((InternalPat *)pat);
- GLC_ERROR_TETS;
-}
-
-static void set_pat(InternaCtx *ctx, InternalPat *pat)
-{
- pat = ref_pat(pat);
- unref_pat(ctx->pat);
- ctx->pat = pat;
-
- glEnable(GL_TEXTURE_2D);
- glBindTexture(GL_TEXTURE_2D, pat->texture);
-
- GLfloat s_gen_params[] = { (GLfloat)1.0 / pat->width, 0, 0, 0 };
- GLfloat t_gen_params[] = { 0, (GLfloat)1.0 / (GLfloat)pat->height, 0, 0 };
- glTexGenfv(GL_S, GL_OBJECT_PLANE, s_gen_params);
- glTexGenfv(GL_T, GL_OBJECT_PLANE, t_gen_params);
-
- glMatrixMode(GL_TEXTURE);
- glLoadIdentity();
- glTranslatef((float)pat->x_orign / pat->width, (float)Y(pat->y_orign) / pat->height, 0);
- GLC_ERROR_TETS;
-}
-
-void glc_set_pattern(GLCCtx glc, GLCPattern pattern)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- InternalPat *pat = (InternalPat *)pattern;
-
- ASSERT(ctx && pat && pat->owner == ctx);
- set_pat(ctx, pat);
-}
-
-void glc_set_rgb(GLCCtx glc, double red, double green, double blue)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx);
-
- glDisable(GL_TEXTURE_2D);
- unref_pat(ctx->pat);
- ctx->pat = NULL;
- glColor4d(red, green, blue, 1);
- GLC_ERROR_TETS;
-}
-
-void glc_set_op(GLCCtx glc, GLCOp op)
-{
- if (op == GL_COPY) {
- glDisable(GL_COLOR_LOGIC_OP);
- return;
- }
- glLogicOp(op);
- glEnable(GL_COLOR_LOGIC_OP);
-}
-
-void glc_set_line_width(GLCCtx glc, double width)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx);
- ctx->line_width = (GLfloat)width;
- if (ctx->line_width > 0) {
- glLineWidth(ctx->line_width);
- } else {
- ctx->line_width = 0;
- }
- GLC_ERROR_TETS;
-}
-
-void glc_set_fill_mode(GLCCtx glc, GLCFillMode fill_mode)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx);
- int mode;
- switch (fill_mode) {
- case GLC_FILL_MODE_WINDING_ODD:
- mode = GLU_TESS_WINDING_ODD;
- break;
- case GLC_FILL_MODE_WINDING_NONZERO:
- mode = GLU_TESS_WINDING_NONZERO;
- break;
- default:
- //warn
- return;
- }
- gluTessProperty(ctx->tesselator, GLU_TESS_WINDING_RULE, mode);
-}
-
-static inline void add_stencil_client(InternaCtx *ctx)
-{
- if (!ctx->stencil_refs) {
- glEnable(GL_STENCIL_TEST);
- }
- ctx->stencil_refs++;
-}
-
-static inline void remove_stencil_client(InternaCtx *ctx)
-{
- ctx->stencil_refs--;
- if (!ctx->stencil_refs) {
- glDisable(GL_STENCIL_TEST);
- }
-}
-
-void glc_set_mask(GLCCtx glc, int x_dest, int y_dest, int width, int height,
- int stride, const uint8_t *bitmap, GLCMaskID id)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- uint32_t mask = (id == GLC_MASK_A) ? 0x04 : 0x08;
- ASSERT(ctx && bitmap);
- ASSERT(id == GLC_MASK_A || id == GLC_MASK_B);
-
- if (ctx->pat) {
- glDisable(GL_TEXTURE_2D);
- }
-
- glDisable(GL_BLEND);
-
- if (!(ctx->stencil_mask & mask)) {
- add_stencil_client(ctx);
- ctx->stencil_mask |= mask;
- }
-
- glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
- ctx->draw_mode = FALSE;
- glStencilMask(mask);
- glClear(GL_STENCIL_BUFFER_BIT);
-
- glStencilFunc(GL_ALWAYS, mask, mask);
- glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
- fill_mask(ctx, x_dest, y_dest, width, height, stride, bitmap);
-}
-
-
-void glc_mask_rects(GLCCtx glc, int num_rect, GLCRect *rects, GLCMaskID id)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- uint32_t mask = (id == GLC_MASK_A) ? 0x04 : 0x08;
- GLCRect *end;
- ASSERT(ctx && rects);
- ASSERT(id == GLC_MASK_A || id == GLC_MASK_B);
-
- if (ctx->pat) {
- glDisable(GL_TEXTURE_2D);
- }
-
- glDisable(GL_BLEND);
-
- if (!(ctx->stencil_mask & mask)) {
- add_stencil_client(ctx);
- ctx->stencil_mask |= mask;
- }
-
- glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
- ctx->draw_mode = FALSE;
- glStencilMask(mask);
- glClear(GL_STENCIL_BUFFER_BIT);
-
- glStencilFunc(GL_ALWAYS, mask, mask);
- glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
- end = rects + num_rect;
- for (; rects < end; rects++) {
- fill_rect(ctx, rects);
- }
-}
-
-void glc_clear_mask(GLCCtx glc, GLCMaskID id)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- uint32_t mask = (id == GLC_MASK_A) ? 0x04 : 0x08;
- ASSERT(ctx);
- ASSERT(id == GLC_MASK_A || id == GLC_MASK_B);
-
- if ((ctx->stencil_mask & mask)) {
- ctx->stencil_mask &= ~mask;
- remove_stencil_client(ctx);
- }
-}
-
-void glc_clip_reset(GLCCtx glc)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- if (!(ctx->stencil_mask & 0x03)) {
- return;
- }
- remove_stencil_client(ctx);
- ctx->stencil_mask &= ~0x03;
- glStencilMask(0x03);
- glClear(GL_STENCIL_BUFFER_BIT);
- GLC_ERROR_TETS;
-}
-
-static void clip_common(InternaCtx *ctx, GLCClipOp op, void (*fill_func)(InternaCtx *, void *),
- void *data)
-{
- int stencil_val;
-
- if (ctx->pat) {
- glDisable(GL_TEXTURE_2D);
- }
- glDisable(GL_BLEND);
- glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
- ctx->draw_mode = FALSE;
-
- if (op == GLC_CLIP_OP_SET) {
- glc_clip_reset(ctx);
- add_stencil_client(ctx);
- ctx->stencil_mask |= 0x01;
- } else if (!(ctx->stencil_mask & 0x03)) {
- GLCRect area;
- if (op == GLC_CLIP_OP_OR) {
- return;
- }
- area.x = area.y = 0;
- area.width= ctx->width;
- area.height = ctx->height;
- clip_common(ctx, GLC_CLIP_OP_SET, fill_rect, &area);
- }
- glStencilMask(0x03);
- switch (op) {
- case GLC_CLIP_OP_SET:
- case GLC_CLIP_OP_OR:
- stencil_val = ctx->stencil_mask & 0x03;
- glStencilFunc(GL_ALWAYS, stencil_val, stencil_val);
- glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
- fill_func(ctx, data);
- break;
- case GLC_CLIP_OP_AND: {
- int clear_mask;
- stencil_val = ctx->stencil_mask & 0x03;
- glStencilFunc(GL_EQUAL, stencil_val, stencil_val);
- if (stencil_val == 0x01) {
- glStencilOp(GL_ZERO, GL_INCR, GL_INCR);
- stencil_val = 0x02;
- clear_mask = 0x01;
- } else {
- glStencilOp(GL_ZERO, GL_DECR, GL_DECR);
- stencil_val = 0x01;
- clear_mask = 0x02;
- }
- fill_func(ctx, data);
-
- glStencilMask(clear_mask);
- glClear(GL_STENCIL_BUFFER_BIT);
- ctx->stencil_mask = (ctx->stencil_mask & ~clear_mask) |stencil_val;
- break;
- }
- case GLC_CLIP_OP_EXCLUDE:
- stencil_val = ctx->stencil_mask & 0x03;
- glStencilFunc(GL_EQUAL, stencil_val, stencil_val);
- glStencilOp(GL_KEEP, GL_ZERO, GL_ZERO);
- fill_func(ctx, data);
- break;
- }
- GLC_ERROR_TETS;
-}
-
-void glc_clip_rect(GLCCtx glc, const GLCRect *rect, GLCClipOp op)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx && rect);
- clip_common(ctx, op, fill_rect, (void *)rect);
-}
-
-void glc_clip_path(GLCCtx glc, GLCPath path, GLCClipOp op)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx && path);
- clip_common(ctx, op, fill_path, path);
-}
-
-typedef struct FillMaskInfo {
- int x_dest;
- int y_dest;
- int width;
- int height;
- int stride;
- const uint8_t *bitmap;
-} FillMaskInfo;
-
-static void __fill_mask(InternaCtx *ctx, void *data)
-{
- FillMaskInfo *info = (FillMaskInfo *)data;
- fill_mask(ctx, info->x_dest, info->y_dest, info->width, info->height, info->stride,
- info->bitmap);
-}
-
-void glc_clip_mask(GLCCtx glc, int x_dest, int y_dest, int width, int height,
- int stride, const uint8_t *bitmap, GLCClipOp op)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- FillMaskInfo mask_info;
-
- ASSERT(ctx && bitmap);
- mask_info.x_dest = x_dest;
- mask_info.y_dest = y_dest;
- mask_info.width = width;
- mask_info.height = height;
- mask_info.stride = stride;
- mask_info.bitmap = bitmap;
- clip_common(ctx, op, __fill_mask, &mask_info);
-}
-
-static inline void start_draw(InternaCtx *ctx)
-{
- if (ctx->draw_mode) {
- return;
- }
- ctx->draw_mode = TRUE;
- glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
- glStencilFunc(GL_EQUAL, ctx->stencil_mask, ctx->stencil_mask);
- glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
- if (ctx->pat) {
- glEnable(GL_TEXTURE_2D);
- } else {
- glDisable(GL_TEXTURE_2D);
- }
- GLC_ERROR_TETS;
-}
-
-static void fill_rect(InternaCtx *ctx, void *r)
-{
- GLCRect *rect = (GLCRect *)r;
- glRectd(rect->x, Y(rect->y), rect->x + rect->width, Y(rect->y + rect->height));
- /*glBegin(GL_POLYGON);
- VERTEX2(rect->x, rect->y);
- VERTEX2 (rect->x + rect->width, rect->y);
- VERTEX2 (rect->x + rect->width, rect->y + rect->height);
- VERTEX2 (rect->x , rect->y + rect->height);
- glEnd();*/
- GLC_ERROR_TETS;
-}
-
-void glc_fill_rect(GLCCtx glc, const GLCRect *rect)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx);
- start_draw(ctx);
- fill_rect(ctx, (void *)rect);
- GLC_ERROR_TETS;
-}
-
-static void fill_path(InternaCtx *ctx, void *p)
-{
- InternalPath *path = (InternalPath *)p;
-
- PathPoint *current_point = path->points;
- PathSegment *current_segment = path->segments;
- Path *current_path = path->paths;
- Path *end_path = current_path + path->paths_pos;
- reset_tass_vertex(ctx);
- gluTessBeginPolygon(ctx->tesselator, ctx);
- for (; current_path < end_path; current_path++) {
- gluTessBeginContour(ctx->tesselator);
- PathSegment *end_segment = current_segment + current_path->num_segments;
- gluTessVertex(ctx->tesselator, (GLdouble *)current_point, current_point);
- current_point++;
- for (; current_segment < end_segment; current_segment++) {
- PathPoint *end_point;
- if (current_segment->type == GLC_PATH_SEG_BEIZER) {
- end_point = current_point + current_segment->count * 3;
- for (; current_point < end_point; current_point += 3) {
- TassVertex *vertex = bezier_flattener(ctx, current_point - 1);
- while (vertex) {
- gluTessVertex(ctx->tesselator, (GLdouble *)&vertex->point,
- (GLdouble *)&vertex->point);
- vertex = vertex->list_link;
- }
- gluTessVertex(ctx->tesselator, (GLdouble *)¤t_point[2],
- (GLdouble *)¤t_point[2]);
- }
- } else {
- ASSERT(current_segment->type == GLC_PATH_SEG_LINES);
- end_point = current_point + current_segment->count;
- for (; current_point < end_point; current_point++) {
- gluTessVertex(ctx->tesselator, (GLdouble *)current_point ,
- (GLdouble *)current_point);
- }
- }
- }
- gluTessEndContour(ctx->tesselator);
- }
- gluTessEndPolygon(ctx->tesselator);
-}
-
-void glc_fill_path(GLCCtx glc, GLCPath path_ref)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx && path_ref);
- start_draw(ctx);
- fill_path(ctx, path_ref);
-}
-
-static void fill_mask(InternaCtx *ctx, int x_dest, int y_dest, int width, int height,
- int stride, const uint8_t *bitmap)
-{
- set_raster_pos(ctx, x_dest, y_dest + height);
- glPixelStorei(GL_UNPACK_ROW_LENGTH, stride * 8);
- glBitmap(width, height, 0, 0, 0, 0, bitmap);
-}
-
-void _glc_fill_mask(GLCCtx glc, int x_dest, int y_dest, int width, int height, int stride,
- const uint8_t *bitmap)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx && bitmap);
- start_draw(ctx);
- if (ctx->pat) {
- WARN_ONCE(("%s: unimplemented fill mask with pattern\n", __FUNCTION__));
- }
- fill_mask(ctx, x_dest, y_dest, width, height, stride, bitmap);
-}
-
-void glc_fill_alpha(GLCCtx glc, int x_dest, int y_dest, int width, int height, int stride,
- const uint8_t *alpha_mask)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- GLCRect r;
-
- ASSERT(ctx);
- start_draw(ctx);
-
- glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
- set_raster_pos(ctx, x_dest, y_dest + height);
- glPixelStorei(GL_UNPACK_ROW_LENGTH, stride);
- glPixelZoom(1, 1);
- glDrawPixels(width, height, GL_ALPHA, GL_UNSIGNED_BYTE, alpha_mask);
-
- r.x = x_dest;
- r.y = y_dest;
- r.width = width;
- r.height = height;
-
- //todo: support color/texture alpah vals (GL_MODULATE)
- glEnable(GL_BLEND);
- glBlendFunc(GL_DST_ALPHA, GL_ONE_MINUS_DST_ALPHA);
- glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
- fill_rect(ctx, &r);
- glDisable(GL_BLEND);
-}
-
-void glc_stroke_rect(GLCCtx glc, const GLCRect *rect)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx);
- if (ctx->line_width == 0) {
- return;
- }
-
- start_draw(ctx);
-
- glBegin(GL_LINES);
- VERTEX2 (rect->x , rect->y + 0.5);
- VERTEX2 (rect->x + rect->width, rect->y + 0.5);
- glEnd();
-
- glBegin(GL_LINES);
- VERTEX2 (rect->x + rect->width - 0.5, rect->y);
- VERTEX2 (rect->x + rect->width - 0.5, rect->y + rect->height);
- glEnd();
-
- glBegin(GL_LINES);
- VERTEX2 (rect->x + rect->width, rect->y + rect->height - 0.5);
- VERTEX2 (rect->x, rect->y + rect->height - 0.5);
- glEnd();
-
- glBegin(GL_LINES);
- VERTEX2(rect->x + 0.5, rect->y + rect->height);
- VERTEX2(rect->x + 0.5 , rect->y);
- glEnd();
- GLC_ERROR_TETS;
-}
-
-void glc_stroke_path(GLCCtx glc, GLCPath path_ref)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- InternalPath *path = (InternalPath *)path_ref;
-
- ASSERT(ctx && path);
- if (ctx->line_width == 0) {
- return;
- }
- start_draw(ctx);
-
- reset_tass_vertex(ctx);
- PathPoint *current_point = path->points;
- PathSegment *current_segment = path->segments;
- Path *current_path = path->paths;
- Path *end_path = current_path + path->paths_pos;
- for (; current_path < end_path; current_path++) {
- glBegin(GL_LINE_STRIP);
- PathSegment *end_segment = current_segment + current_path->num_segments;
- glVertex2d(current_point->x , current_point->y);
- current_point++;
- for (; current_segment < end_segment; current_segment++) {
- PathPoint *end_point;
- if (current_segment->type == GLC_PATH_SEG_BEIZER) {
- end_point = current_point + current_segment->count * 3;
- for (; current_point < end_point; current_point += 3) {
- TassVertex *vertex = bezier_flattener(ctx, current_point - 1);
- while (vertex) {
- glVertex2d(vertex->point.x, vertex->point.y);
- vertex = vertex->list_link;
- }
- glVertex2d(current_point[2].x , current_point[2].y);
- }
- } else {
- ASSERT(current_segment->type == GLC_PATH_SEG_LINES);
- end_point = current_point + current_segment->count;
- for (; current_point < end_point; current_point++) {
- glVertex2d(current_point->x , current_point->y);
- }
- }
- }
- glEnd();
- }
-}
-
-void glc_draw_image(GLCCtx glc, const GLCRecti *dest, const GLCRecti *src, const GLCImage *image,
- int scale_mode, double alpha)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- uint8_t *pixels;
- const int pix_bytes = 4;
-
- ASSERT(ctx && image);
- ASSERT(src->width > 0 && src->height > 0);
-
- ASSERT(image->format == GLC_IMAGE_RGB32 || image->format == GLC_IMAGE_ARGB32); //for now
- start_draw(ctx);
- if (ctx->pat) {
- glDisable(GL_TEXTURE_2D);
- }
- set_raster_pos(ctx, dest->x, dest->y + dest->height);
-
- if (dest->width == src->width && src->height == dest->height) {
- glPixelZoom(1, 1);
- } else {
- glPixelZoom((float)dest->width / src->width, (float)dest->height / src->height);
- }
-
- pixels = image->pixels + src->x * 4 + (image->height - (src->y + src->height)) * image->stride;
- if (image->format == GLC_IMAGE_ARGB32 || alpha != 1) {
- glPixelTransferf(GL_ALPHA_SCALE, (GLfloat)alpha);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glEnable(GL_BLEND);
- }
- ASSERT(image->stride % pix_bytes == 0);
- glPixelStorei(GL_UNPACK_ROW_LENGTH, image->stride / pix_bytes);
- glDrawPixels(src->width, src->height, GL_BGRA, GL_UNSIGNED_BYTE, pixels);
-
- if (image->format == GLC_IMAGE_ARGB32 || alpha != 1) {
- glDisable(GL_BLEND);
- }
-
- if (ctx->pat) {
- glEnable(GL_TEXTURE_2D);
- }
- GLC_ERROR_TETS;
-}
-
-void glc_copy_pixels(GLCCtx glc, int x_dest, int y_dest, int x_src, int y_src, int width,
- int height)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
- ASSERT(ctx);
-#ifdef USE_COPY_PIXELS
- start_draw(ctx);
- if (ctx->pat) {
- glDisable(GL_TEXTURE_2D);
- }
- set_raster_pos(ctx, x_dest, y_dest + height);
- glPixelZoom(1, 1);
- glCopyPixels(x_src, ctx->height - (y_src + height), width, height, GL_COLOR);
- if (ctx->pat) {
- glEnable(GL_TEXTURE_2D);
- }
-#else
- GLuint texture;
- int width2 = to_pwoer_two(width);
- int height2 = to_pwoer_two(height);
-
- start_draw(ctx);
- glEnable(GL_TEXTURE_2D);
- glGenTextures(1, &texture);
- glBindTexture(GL_TEXTURE_2D, texture);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
-
- glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, x_src, ctx->height - (y_src + height),
- width2, height2, 0);
-
- GLfloat s_gen_params[] = { (GLfloat)1.0 / width2, 0, 0, 0 };
- GLfloat t_gen_params[] = { 0, (GLfloat)1.0 / height2, 0, 0 };
- glTexGenfv(GL_S, GL_OBJECT_PLANE, s_gen_params);
- glTexGenfv(GL_T, GL_OBJECT_PLANE, t_gen_params);
-
- glMatrixMode(GL_TEXTURE);
- glLoadIdentity();
- glTranslatef((float)-x_dest / width2, (float)-Y(y_dest + height) / height2, 0);
-
- glRecti(x_dest, Y(y_dest), x_dest + width, Y(y_dest + height));
- glFinish();
- glDeleteTextures(1, &texture);
- if (!ctx->pat) {
- glDisable(GL_TEXTURE_2D);
- } else {
- set_pat(ctx, ctx->pat);
- }
-#endif
- GLC_ERROR_TETS;
-}
-
-void glc_read_pixels(GLCCtx glc, int x, int y, GLCImage *image)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx && image);
- ASSERT(image->format == GLC_IMAGE_RGB32); //for now
- ASSERT((image->stride % 4) == 0); //for now
- glPixelStorei(GL_PACK_ROW_LENGTH, image->stride / 4);
- glReadPixels(x, ctx->height - (y + image->height), image->width, image->height,
- GL_BGRA, GL_UNSIGNED_BYTE, image->pixels);
-}
-
-void glc_clear(GLCCtx glc)
-{
- InternaCtx *ctx = (InternaCtx *)glc;
-
- ASSERT(ctx);
- glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
- glClear(GL_COLOR_BUFFER_BIT);
-}
-
-void glc_flush(GLCCtx glc)
-{
- glFlush();
-
- GLC_ERROR_TETS;
-}
-
-static void tessellation_combine(GLdouble coords[3], GLdouble *vertex_data[4], GLfloat weight[4],
- GLdouble **data_out, void *usr_data)
-{
- TassVertex *vertex;
-
- if (!(vertex = alloc_tess_vertex((InternaCtx *)usr_data))) {
- *data_out = NULL;
- return;
- }
- vertex->point.x = coords[0];
- vertex->point.y = coords[1];
- //vertex->point.z = coords[2];
- *data_out = (GLdouble *)&vertex->point;
-}
-
-static void tessellation_error(GLenum errorCode)
-{
- printf ("%s: %s\n", __FUNCTION__, gluErrorString(errorCode));
-}
-
-#ifdef WIN32
-#define TESS_CALL_BACK_TYPE void (CALLBACK *)()
-#else
-#define TESS_CALL_BACK_TYPE void (*)()
-#endif
-
-static int init(InternaCtx *ctx, int width, int height)
-{
-#ifdef WIN32
- if (!(ctx->glBlendEquation = (PFNGLBLENDEQUATIONPROC)wglGetProcAddress("glBlendEquation"))) {
- return FALSE;
- }
-#endif
- ctx->width = width;
- ctx->height = height;
- ctx->line_width = 1;
-
- glClearColor(0, 0, 0, 0);
- glClearStencil(0);
-
- if (!(ctx->tesselator = gluNewTess())) {
- return FALSE;
- }
-
- glViewport(0, 0, width, height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(0, width, 0, height, -1, 1);
-
- gluTessProperty(ctx->tesselator, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
- gluTessCallback(ctx->tesselator, GLU_BEGIN, (TESS_CALL_BACK_TYPE)glBegin);
- gluTessCallback(ctx->tesselator, GLU_VERTEX, (TESS_CALL_BACK_TYPE)glVertex3dv);
- gluTessCallback(ctx->tesselator, GLU_END, (TESS_CALL_BACK_TYPE)glEnd);
- gluTessCallback(ctx->tesselator, GLU_TESS_COMBINE_DATA, (TESS_CALL_BACK_TYPE)tessellation_combine);
- gluTessCallback(ctx->tesselator, GLU_TESS_ERROR, (TESS_CALL_BACK_TYPE)tessellation_error);
-
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
- glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
- glEnable(GL_TEXTURE_GEN_S);
- glEnable(GL_TEXTURE_GEN_T);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(0, (GLfloat)height, 0);
-
- glGetIntegerv( GL_MAX_TEXTURE_SIZE, &ctx->max_texture_size);
-
- glPixelStorei(GL_PACK_ALIGNMENT, 1);
-
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
- glPixelTransferf(GL_ALPHA_BIAS, 0);
-#ifdef WIN32
- ctx->glBlendEquation(GL_FUNC_ADD);
-#else
- glBlendEquation(GL_FUNC_ADD);
-#endif
-
- glStencilMask(0xff);
- glClear(GL_STENCIL_BUFFER_BIT);
-
- glClear(GL_COLOR_BUFFER_BIT);
-
- return TRUE;
-}
-
-GLCCtx glc_create(int width, int height)
-{
- InternaCtx *ctx;
-
- ASSERT(sizeof(PathPoint) == sizeof(Vertex));
-
- if (!(ctx = (InternaCtx *)zmalloc(sizeof(*ctx)))) {
- return NULL;
- }
-
- if (!init(ctx, width, height)) {
- free(ctx);
- return NULL;
- }
- return ctx;
-}
-
-void glc_destroy(GLCCtx glc)
-{
- InternaCtx *ctx;
-
- if (!(ctx = (InternaCtx *)glc)) {
- return;
- }
-
- unref_pat(ctx->pat);
- free_tass_vertex_bufs(ctx);
- free(ctx);
-}
-
-/*
- todo:
- 1. test double vs float in gl calls
- 2. int vs flat raster position
- 3. pixels stride vs bytes stride
- 4. improve non power of two.
- glGetString(GL_EXTENSIONS);
- ARB_texture_non_power_of_two
- ARB_texture_rectangle
- GL_TEXTURE_RECTANGLE_ARB
- 5. scale
- 6. origin
- 7. fonts
- 8. support more image formats
- 9. use GLCImage in mask ops?
-*/
-
--
1.7.7.5
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