mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-12-01 09:21:34 +00:00
446 lines
13 KiB
C++
446 lines
13 KiB
C++
#include <algorithm>
|
||
#include <cmath>
|
||
#ifdef PANDORA
|
||
#include <stddef.h>
|
||
#endif
|
||
|
||
#include "base/display.h"
|
||
#include "base/logging.h"
|
||
#include "math/math_util.h"
|
||
#include "gfx_es2/draw_buffer.h"
|
||
#include "gfx_es2/glsl_program.h"
|
||
#include "gfx_es2/gl_state.h"
|
||
#include "gfx/texture_atlas.h"
|
||
#include "gfx/gl_debug_log.h"
|
||
#include "gfx/gl_common.h"
|
||
#include "util/text/utf8.h"
|
||
|
||
enum {
|
||
// Enough?
|
||
MAX_VERTS = 65536,
|
||
};
|
||
|
||
// #define USE_VBO
|
||
|
||
DrawBuffer::DrawBuffer() : count_(0), atlas(0) {
|
||
verts_ = new Vertex[MAX_VERTS];
|
||
fontscalex = 1.0f;
|
||
fontscaley = 1.0f;
|
||
inited_ = false;
|
||
}
|
||
DrawBuffer::~DrawBuffer() {
|
||
delete [] verts_;
|
||
}
|
||
|
||
void DrawBuffer::Init(bool registerAsHolder) {
|
||
if (inited_)
|
||
return;
|
||
inited_ = true;
|
||
glGenBuffers(1, (GLuint *)&vbo_);
|
||
if (registerAsHolder)
|
||
register_gl_resource_holder(this);
|
||
}
|
||
|
||
void DrawBuffer::Shutdown() {
|
||
glDeleteBuffers(1, (GLuint *)&vbo_);
|
||
vbo_ = 0;
|
||
inited_ = false;
|
||
unregister_gl_resource_holder(this);
|
||
}
|
||
|
||
void DrawBuffer::GLLost() {
|
||
inited_ = false;
|
||
Init(false);
|
||
}
|
||
|
||
void DrawBuffer::Begin(const GLSLProgram *program, DrawBufferMode dbmode) {
|
||
Init();
|
||
program_ = program;
|
||
count_ = 0;
|
||
mode_ = dbmode;
|
||
}
|
||
|
||
void DrawBuffer::End() {
|
||
// Currently does nothing, but call it!
|
||
}
|
||
|
||
void DrawBuffer::Flush(bool set_blend_state) {
|
||
glsl_bind(program_);
|
||
if (count_ == 0)
|
||
return;
|
||
#ifdef USE_VBO
|
||
glBindBuffer(GL_ARRAY_BUFFER, vbo_);
|
||
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
|
||
glBufferData(GL_ARRAY_BUFFER, sizeof(Vertex) * count_, verts_, GL_STREAM_DRAW);
|
||
if (set_blend_state) {
|
||
glstate.blend.enable();
|
||
glstate.blendFunc.set(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||
}
|
||
glUniform1i(program_->sampler0, 0);
|
||
glEnableVertexAttribArray(program_->a_position);
|
||
glEnableVertexAttribArray(program_->a_color);
|
||
if (program_->a_texcoord0 != -1)
|
||
glEnableVertexAttribArray(program_->a_texcoord0);
|
||
GL_CHECK();
|
||
glVertexAttribPointer(program_->a_position, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void *)offsetof(Vertex, x));
|
||
glVertexAttribPointer(program_->a_color, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Vertex), (void *)offsetof(Vertex, rgba));
|
||
if (program_->a_texcoord0 != -1)
|
||
glVertexAttribPointer(program_->a_texcoord0, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void *)offsetof(Vertex, u));
|
||
glDrawArrays(mode_ == DBMODE_LINES ? GL_LINES : GL_TRIANGLES, 0, count_);
|
||
GL_CHECK();
|
||
glDisableVertexAttribArray(program_->a_position);
|
||
glDisableVertexAttribArray(program_->a_color);
|
||
if (program_->a_texcoord0 != -1)
|
||
glDisableVertexAttribArray(program_->a_texcoord0);
|
||
GL_CHECK();
|
||
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
||
#else
|
||
if (set_blend_state) {
|
||
glstate.blend.enable();
|
||
glstate.blendFunc.set(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||
}
|
||
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
||
glUniform1i(program_->sampler0, 0);
|
||
glEnableVertexAttribArray(program_->a_position);
|
||
glEnableVertexAttribArray(program_->a_color);
|
||
if (program_->a_texcoord0 != -1)
|
||
glEnableVertexAttribArray(program_->a_texcoord0);
|
||
GL_CHECK();
|
||
glVertexAttribPointer(program_->a_position, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void *)&verts_[0].x);
|
||
glVertexAttribPointer(program_->a_color, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Vertex), (void *)&verts_[0].rgba);
|
||
if (program_->a_texcoord0 != -1)
|
||
glVertexAttribPointer(program_->a_texcoord0, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void *)&verts_[0].u);
|
||
glDrawArrays(mode_ == DBMODE_LINES ? GL_LINES : GL_TRIANGLES, 0, count_);
|
||
GL_CHECK();
|
||
glDisableVertexAttribArray(program_->a_position);
|
||
glDisableVertexAttribArray(program_->a_color);
|
||
if (program_->a_texcoord0 != -1)
|
||
glDisableVertexAttribArray(program_->a_texcoord0);
|
||
GL_CHECK();
|
||
#endif
|
||
count_ = 0;
|
||
}
|
||
|
||
void DrawBuffer::V(float x, float y, float z, uint32 color, float u, float v) {
|
||
if (count_ >= MAX_VERTS) {
|
||
FLOG("Overflowed the DrawBuffer");
|
||
return;
|
||
}
|
||
|
||
Vertex *vert = &verts_[count_++];
|
||
vert->x = x;
|
||
vert->y = y;
|
||
vert->z = z;
|
||
vert->rgba = color;
|
||
vert->u = u;
|
||
vert->v = v;
|
||
}
|
||
|
||
void DrawBuffer::Rect(float x, float y, float w, float h, uint32 color, int align) {
|
||
DoAlign(align, &x, &y, &w, &h);
|
||
RectVGradient(x, y, w, h, color, color);
|
||
}
|
||
|
||
void DrawBuffer::RectVGradient(float x, float y, float w, float h, uint32 colorTop, uint32 colorBottom) {
|
||
V(x, y, 0, colorTop, 0, 0);
|
||
V(x + w, y, 0, colorTop, 1, 0);
|
||
V(x + w, y + h, 0, colorBottom, 1, 1);
|
||
V(x, y, 0, colorTop, 0, 0);
|
||
V(x + w, y + h, 0, colorBottom, 1, 1);
|
||
V(x, y + h, 0, colorBottom, 0, 1);
|
||
}
|
||
|
||
void DrawBuffer::MultiVGradient(float x, float y, float w, float h, GradientStop *stops, int numStops) {
|
||
for (int i = 0; i < numStops - 1; i++) {
|
||
float t0 = stops[i].t, t1 = stops[i+1].t;
|
||
uint32_t c0 = stops[i].t, c1 = stops[i+1].t;
|
||
RectVGradient(x, y + h * t0, w, h * (t1 - t0), c0, c1);
|
||
}
|
||
}
|
||
|
||
void DrawBuffer::Rect(float x, float y, float w, float h,
|
||
float u, float v, float uw, float uh,
|
||
uint32 color) {
|
||
V(x, y, 0, color, u, v);
|
||
V(x + w, y, 0, color, u + uw, v);
|
||
V(x + w, y + h, 0, color, u + uw, v + uh);
|
||
V(x, y, 0, color, u, v);
|
||
V(x + w, y + h, 0, color, u + uw, v + uh);
|
||
V(x, y + h, 0, color, u, v + uh);
|
||
}
|
||
|
||
void DrawBuffer::MeasureImage(int atlas_image, float *w, float *h) {
|
||
const AtlasImage &image = atlas->images[atlas_image];
|
||
*w = (float)image.w;
|
||
*h = (float)image.h;
|
||
}
|
||
|
||
void DrawBuffer::DrawImage(int atlas_image, float x, float y, float scale, Color color, int align) {
|
||
const AtlasImage &image = atlas->images[atlas_image];
|
||
float w = (float)image.w * scale;
|
||
float h = (float)image.h * scale;
|
||
if (align & ALIGN_HCENTER) x -= w / 2;
|
||
if (align & ALIGN_RIGHT) x -= w;
|
||
if (align & ALIGN_VCENTER) y -= h / 2;
|
||
if (align & ALIGN_BOTTOM) y -= h;
|
||
DrawImageStretch(atlas_image, x, y, x + w, y + h, color);
|
||
}
|
||
|
||
void DrawBuffer::DrawImageStretch(int atlas_image, float x1, float y1, float x2, float y2, Color color) {
|
||
const AtlasImage &image = atlas->images[atlas_image];
|
||
V(x1, y1, color, image.u1, image.v1);
|
||
V(x2, y1, color, image.u2, image.v1);
|
||
V(x2, y2, color, image.u2, image.v2);
|
||
V(x1, y1, color, image.u1, image.v1);
|
||
V(x2, y2, color, image.u2, image.v2);
|
||
V(x1, y2, color, image.u1, image.v2);
|
||
}
|
||
|
||
inline void rot(float *v, float angle, float xc, float yc) {
|
||
v[0]-=xc;
|
||
v[1]-=yc;
|
||
|
||
float ca=cosf(angle),sa=sinf(angle);
|
||
|
||
float t0 = v[0] * ca + v[1] * -sa;
|
||
float t1 = v[0] * sa + v[1] * ca;
|
||
|
||
v[0] = t0 + xc;
|
||
v[1] = t1 + yc;
|
||
}
|
||
|
||
|
||
void DrawBuffer::DrawImageRotated(int atlas_image, float x, float y, float scale, float angle, Color color, bool mirror_h) {
|
||
const AtlasImage &image = atlas->images[atlas_image];
|
||
float w = (float)image.w * scale;
|
||
float h = (float)image.h * scale;
|
||
float x1 = x - w / 2;
|
||
float x2 = x + w / 2;
|
||
float y1 = y - h / 2;
|
||
float y2 = y + h / 2;
|
||
float v[6][2] = {
|
||
{x1, y1},
|
||
{x2, y1},
|
||
{x2, y2},
|
||
{x1, y1},
|
||
{x2, y2},
|
||
{x1, y2},
|
||
};
|
||
float u1 = image.u1;
|
||
float u2 = image.u2;
|
||
if (mirror_h) {
|
||
float temp = u1;
|
||
u1 = u2;
|
||
u2 = temp;
|
||
}
|
||
const float uv[6][2] = {
|
||
{u1, image.v1},
|
||
{u2, image.v1},
|
||
{u2, image.v2},
|
||
{u1, image.v1},
|
||
{u2, image.v2},
|
||
{u1, image.v2},
|
||
};
|
||
for (int i = 0; i < 6; i++) {
|
||
rot(v[i], angle, x, y);
|
||
V(v[i][0], v[i][1], 0, color, uv[i][0], uv[i][1]);
|
||
}
|
||
}
|
||
|
||
|
||
// TODO: add arc support
|
||
void DrawBuffer::Circle(float xc, float yc, float radius, float thickness, int segments, float startAngle, uint32 color, float u_mul) {
|
||
float angleDelta = PI * 2 / segments;
|
||
float uDelta = 1.0f / segments;
|
||
float t2 = thickness / 2.0f;
|
||
float r1 = radius + t2;
|
||
float r2 = radius - t2;
|
||
for (int i = 0; i < segments + 1; i++) {
|
||
float angle1 = i * angleDelta;
|
||
float angle2 = (i + 1) * angleDelta;
|
||
float u1 = u_mul * i * uDelta;
|
||
float u2 = u_mul * (i + 1) * uDelta;
|
||
// TODO: get rid of one pair of cos/sin per loop, can reuse from last iteration
|
||
float c1 = cosf(angle1), s1 = sinf(angle1), c2 = cosf(angle2), s2 = sinf(angle2);
|
||
const float x[4] = {c1 * r1 + xc, c2 * r1 + xc, c1 * r2 + xc, c2 * r2 + xc};
|
||
const float y[4] = {s1 * r1 + yc, s2 * r1 + yc, s1 * r2 + yc, s2 * r2 + yc};
|
||
V(x[0], y[0], color, u1, 0);
|
||
V(x[1], y[1], color, u2, 0);
|
||
V(x[2], y[2], color, u1, 1);
|
||
V(x[1], y[1], color, u2, 0);
|
||
V(x[3], y[3], color, u2, 1);
|
||
V(x[2], y[2], color, u1, 1);
|
||
}
|
||
}
|
||
|
||
void DrawBuffer::DrawTexRect(float x1, float y1, float x2, float y2, float u1, float v1, float u2, float v2, Color color) {
|
||
V(x1, y1, color, u1, v1);
|
||
V(x2, y1, color, u2, v1);
|
||
V(x2, y2, color, u2, v2);
|
||
V(x1, y1, color, u1, v1);
|
||
V(x2, y2, color, u2, v2);
|
||
V(x1, y2, color, u1, v2);
|
||
}
|
||
|
||
void DrawBuffer::DrawImage4Grid(int atlas_image, float x1, float y1, float x2, float y2, Color color, float corner_scale) {
|
||
const AtlasImage &image = atlas->images[atlas_image];
|
||
|
||
float u1 = image.u1, v1 = image.v1, u2 = image.u2, v2 = image.v2;
|
||
float um = (u2 + u1) * 0.5f;
|
||
float vm = (v2 + v1) * 0.5f;
|
||
float iw2 = (image.w * 0.5f) * corner_scale;
|
||
float ih2 = (image.h * 0.5f) * corner_scale;
|
||
float xa = x1 + iw2;
|
||
float xb = x2 - iw2;
|
||
float ya = y1 + ih2;
|
||
float yb = y2 - ih2;
|
||
// Top row
|
||
DrawTexRect(x1, y1, xa, ya, u1, v1, um, vm, color);
|
||
DrawTexRect(xa, y1, xb, ya, um, v1, um, vm, color);
|
||
DrawTexRect(xb, y1, x2, ya, um, v1, u2, vm, color);
|
||
// Middle row
|
||
DrawTexRect(x1, ya, xa, yb, u1, vm, um, vm, color);
|
||
DrawTexRect(xa, ya, xb, yb, um, vm, um, vm, color);
|
||
DrawTexRect(xb, ya, x2, yb, um, vm, u2, vm, color);
|
||
// Bottom row
|
||
DrawTexRect(x1, yb, xa, y2, u1, vm, um, v2, color);
|
||
DrawTexRect(xa, yb, xb, y2, um, vm, um, v2, color);
|
||
DrawTexRect(xb, yb, x2, y2, um, vm, u2, v2, color);
|
||
}
|
||
|
||
void DrawBuffer::DrawImage2GridH(int atlas_image, float x1, float y1, float x2, Color color, float corner_scale) {
|
||
const AtlasImage &image = atlas->images[atlas_image];
|
||
float um = (image.u1 + image.u2) * 0.5f;
|
||
float iw2 = (image.w * 0.5f) * corner_scale;
|
||
float xa = x1 + iw2;
|
||
float xb = x2 - iw2;
|
||
float u1 = image.u1, v1 = image.v1, u2 = image.u2, v2 = image.v2;
|
||
float y2 = y1 + image.h;
|
||
DrawTexRect(x1, y1, xa, y2, u1, v1, um, v2, color);
|
||
DrawTexRect(xa, y1, xb, y2, um, v1, um, v2, color);
|
||
DrawTexRect(xb, y1, x2, y2, um, v1, u2, v2, color);
|
||
}
|
||
|
||
void DrawBuffer::MeasureText(int font, const char *text, float *w, float *h) {
|
||
const AtlasFont &atlasfont = *atlas->fonts[font];
|
||
|
||
unsigned int cval;
|
||
float wacc = 0;
|
||
int lines = 1;
|
||
UTF8 utf(text);
|
||
while (true) {
|
||
if (utf.end())
|
||
break;
|
||
cval = utf.next();
|
||
if (cval == '\n') {
|
||
wacc = 0;
|
||
lines++;
|
||
continue;
|
||
}
|
||
const AtlasChar *c = atlasfont.getChar(cval);
|
||
if (c) {
|
||
wacc += c->wx * fontscalex;
|
||
}
|
||
}
|
||
if (w) *w = wacc;
|
||
if (h) *h = atlasfont.height * fontscaley * lines;
|
||
}
|
||
|
||
void DrawBuffer::DrawTextShadow(int font, const char *text, float x, float y, Color color, int flags) {
|
||
uint32_t alpha = (color >> 1) & 0xFF000000;
|
||
DrawText(font, text, x + 2, y + 2, alpha, flags);
|
||
DrawText(font, text, x, y, color, flags);
|
||
}
|
||
|
||
void DrawBuffer::DoAlign(int flags, float *x, float *y, float *w, float *h) {
|
||
if (flags & ALIGN_HCENTER) *x -= *w / 2;
|
||
if (flags & ALIGN_RIGHT) *x -= *w;
|
||
if (flags & ALIGN_VCENTER) *y -= *h / 2;
|
||
if (flags & ALIGN_BOTTOM) *y -= *h;
|
||
if (flags & (ROTATE_90DEG_LEFT | ROTATE_90DEG_RIGHT)) {
|
||
std::swap(*w, *h);
|
||
std::swap(*x, *y);
|
||
}
|
||
}
|
||
|
||
// TODO: Unicode support.
|
||
// U+4E00<30>U+9FBF Kanji
|
||
// U+3040<34>U+309F Hiragana
|
||
// U+30A0<41>U+30FF Katakana
|
||
|
||
|
||
// ROTATE_* doesn't yet work right.
|
||
void DrawBuffer::DrawText(int font, const char *text, float x, float y, Color color, int flags) {
|
||
const AtlasFont &atlasfont = *atlas->fonts[font];
|
||
unsigned int cval;
|
||
float w, h;
|
||
MeasureText(font, text, &w, &h);
|
||
if (flags) {
|
||
DoAlign(flags, &x, &y, &w, &h);
|
||
}
|
||
|
||
if (flags & ROTATE_90DEG_LEFT) {
|
||
x -= atlasfont.ascend*fontscaley;
|
||
// y += h;
|
||
}
|
||
else
|
||
y += atlasfont.ascend*fontscaley;
|
||
float sx = x;
|
||
UTF8 utf(text);
|
||
while (true) {
|
||
if (utf.end())
|
||
break;
|
||
cval = utf.next();
|
||
if (cval == '\n') {
|
||
y += atlasfont.height * fontscaley;
|
||
x = sx;
|
||
continue;
|
||
}
|
||
const AtlasChar *ch = atlasfont.getChar(cval);
|
||
if (!ch)
|
||
ch = atlasfont.getChar('?');
|
||
if (ch) {
|
||
const AtlasChar &c = *ch;
|
||
float cx1, cy1, cx2, cy2;
|
||
if (flags & ROTATE_90DEG_LEFT) {
|
||
cy1 = y - c.ox * fontscalex;
|
||
cx1 = x + c.oy * fontscaley;
|
||
cy2 = y - (c.ox + c.pw) * fontscalex;
|
||
cx2 = x + (c.oy + c.ph) * fontscaley;
|
||
} else {
|
||
cx1 = x + c.ox * fontscalex;
|
||
cy1 = y + c.oy * fontscaley;
|
||
cx2 = x + (c.ox + c.pw) * fontscalex;
|
||
cy2 = y + (c.oy + c.ph) * fontscaley;
|
||
}
|
||
V(cx1, cy1, color, c.sx, c.sy);
|
||
V(cx2, cy1, color, c.ex, c.sy);
|
||
V(cx2, cy2, color, c.ex, c.ey);
|
||
V(cx1, cy1, color, c.sx, c.sy);
|
||
V(cx2, cy2, color, c.ex, c.ey);
|
||
V(cx1, cy2, color, c.sx, c.ey);
|
||
if (flags & ROTATE_90DEG_LEFT)
|
||
y -= c.wx * fontscalex;
|
||
else
|
||
x += c.wx * fontscalex;
|
||
}
|
||
}
|
||
}
|
||
|
||
void DrawBuffer::EnableBlend(bool enable) {
|
||
glstate.blend.set(enable);
|
||
glstate.blendFunc.set(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||
}
|
||
|
||
void DrawBuffer::SetClipRect(float x, float y, float w, float h)
|
||
{
|
||
// Sigh, OpenGL is upside down.
|
||
glstate.scissorRect.set(x, dp_yres - y, w, h);
|
||
glstate.scissorTest.enable();
|
||
}
|
||
|
||
void DrawBuffer::NoClip()
|
||
{
|
||
glstate.scissorTest.disable();
|
||
}
|