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mythrender_opengl.cpp
1271 lines (1085 loc) · 35.3 KB
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mythrender_opengl.cpp
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#include <algorithm>
using namespace std;
#include "mythverbose.h"
#include "mythrender_opengl.h"
#include "mythxdisplay.h"
#define LOC QString("OpenGL: ")
#define LOC_ERR QString("OpenGL Error: ")
#include "mythrender_opengl2.h"
#ifdef USING_OPENGLES
#include "mythrender_opengl2es.h"
#else
#include "mythrender_opengl1.h"
#endif
static const GLuint kTextureOffset = 8 * sizeof(GLfloat);
static inline int __glCheck__(const QString &loc, const char* fileName, int n)
{
int error = glGetError();
if (error)
{
VERBOSE(VB_IMPORTANT, QString("%1: %2 @ %3, %4")
.arg(loc).arg(error).arg(fileName).arg(n));
}
return error;
}
#define MAX_VERTEX_CACHE 500
#define glCheck() __glCheck__(LOC, __FILE__, __LINE__)
OpenGLLocker::OpenGLLocker(MythRenderOpenGL *render) : m_render(render)
{
if (m_render)
m_render->makeCurrent();
}
OpenGLLocker::~OpenGLLocker()
{
if (m_render)
m_render->doneCurrent();
}
MythRenderOpenGL* MythRenderOpenGL::Create(const QGLFormat& format, QPaintDevice* device)
{
#ifdef USING_OPENGLES
if (device)
return new MythRenderOpenGL2ES(format, device);
return new MythRenderOpenGL2ES(format);
#else
if (device)
return new MythRenderOpenGL1(format, device);
return new MythRenderOpenGL1(format);
#endif
}
MythRenderOpenGL::MythRenderOpenGL(const QGLFormat& format, QPaintDevice* device,
RenderType type)
: QGLContext(format, device), MythRender(type)
{
}
MythRenderOpenGL::MythRenderOpenGL(const QGLFormat& format, RenderType type)
: QGLContext(format), MythRender(type)
{
}
MythRenderOpenGL::~MythRenderOpenGL()
{
delete m_lock;
}
void MythRenderOpenGL::Init(void)
{
OpenGLLocker locker(this);
InitProcs();
Init2DState();
InitFeatures();
VERBOSE(VB_GENERAL, LOC + "Initialised MythRenderOpenGL");
}
void MythRenderOpenGL::makeCurrent()
{
m_lock->lock();
if (this != MythRenderOpenGL::currentContext())
QGLContext::makeCurrent();
m_lock_level++;
}
void MythRenderOpenGL::doneCurrent()
{
m_lock_level--;
if (m_lock_level == 0)
QGLContext::doneCurrent();
if (m_lock_level < 0)
VERBOSE(VB_IMPORTANT, LOC_ERR + "Mis-matched calls to makeCurrent()");
m_lock->unlock();
}
void MythRenderOpenGL::Release(void)
{
#if !defined(Q_WS_WIN)
while (m_lock_level > 0)
doneCurrent();
#endif
}
void MythRenderOpenGL::MoveResizeWindow(const QRect &rect)
{
QWidget *parent = (QWidget*)this->device();
if (parent)
parent->setGeometry(rect);
}
void MythRenderOpenGL::SetViewPort(const QRect &rect)
{
if (rect == m_viewport)
return;
makeCurrent();
m_viewport = rect;
glViewport(m_viewport.left(), m_viewport.top(),
m_viewport.width(), m_viewport.height());
SetMatrixView();
doneCurrent();
}
void MythRenderOpenGL::Flush(bool use_fence)
{
makeCurrent();
if ((m_exts_used & kGLAppleFence) &&
(m_fence && use_fence))
{
m_glSetFenceAPPLE(m_fence);
m_glFinishFenceAPPLE(m_fence);
}
else if ((m_exts_used & kGLNVFence) &&
(m_fence && use_fence))
{
m_glSetFenceNV(m_fence, GL_ALL_COMPLETED_NV);
m_glFinishFenceNV(m_fence);
}
else
{
glFlush();
}
doneCurrent();
}
void MythRenderOpenGL::SetBlend(bool enable)
{
makeCurrent();
if (enable && !m_blend)
glEnable(GL_BLEND);
else if (!enable && m_blend)
glDisable(GL_BLEND);
m_blend = enable;
doneCurrent();
}
void MythRenderOpenGL::SetBackground(int r, int g, int b, int a)
{
uint32_t tmp = (r << 24) + (g << 16) + (b << 8) + a;
if (tmp == m_background)
return;
m_background = tmp;
makeCurrent();
glClearColor(r / 255.0, g / 255.0, b / 255.0, a / 255.0);
doneCurrent();
}
void MythRenderOpenGL::SetFence(void)
{
makeCurrent();
if (m_exts_used & kGLAppleFence)
{
m_glGenFencesAPPLE(1, &m_fence);
if (m_fence)
VERBOSE(VB_PLAYBACK, LOC + "Using GL_APPLE_fence");
}
else if (m_exts_used & kGLNVFence)
{
m_glGenFencesNV(1, &m_fence);
if (m_fence)
VERBOSE(VB_PLAYBACK, LOC + "Using GL_NV_fence");
}
doneCurrent();
}
void* MythRenderOpenGL::GetTextureBuffer(uint tex, bool create_buffer)
{
if (!m_textures.contains(tex))
return NULL;
makeCurrent(); // associated doneCurrent() in UpdateTexture
EnableTextures(tex);
glBindTexture(m_textures[tex].m_type, tex);
if (!create_buffer)
return NULL;
if (m_textures[tex].m_pbo)
{
m_glBindBuffer(GL_PIXEL_UNPACK_BUFFER, m_textures[tex].m_pbo);
m_glBufferData(GL_PIXEL_UNPACK_BUFFER,
m_textures[tex].m_data_size, NULL, GL_STREAM_DRAW);
return m_glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);
}
if (m_textures[tex].m_data)
return m_textures[tex].m_data;
unsigned char *scratch = new unsigned char[m_textures[tex].m_data_size];
if (scratch)
{
memset(scratch, 0, m_textures[tex].m_data_size);
m_textures[tex].m_data = scratch;
}
return scratch;
}
void MythRenderOpenGL::UpdateTexture(uint tex, void *buf)
{
// N.B. GetTextureBuffer must be called first
if (!m_textures.contains(tex))
return;
QSize size = m_textures[tex].m_act_size;
if (m_textures[tex].m_pbo)
{
m_glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
glTexSubImage2D(m_textures[tex].m_type, 0, 0, 0, size.width(),
size.height(), m_textures[tex].m_data_fmt,
m_textures[tex].m_data_type, 0);
m_glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
else
{
glTexSubImage2D(m_textures[tex].m_type, 0, 0, 0, size.width(),
size.height(), m_textures[tex].m_data_fmt,
m_textures[tex].m_data_type, buf);
}
doneCurrent();
}
int MythRenderOpenGL::GetTextureType(bool &rect)
{
static bool rects = true;
static bool check = true;
if (check)
{
check = false;
rects = !getenv("OPENGL_NORECT");
if (!rects)
VERBOSE(VB_GENERAL, LOC + "Disabling NPOT textures.");
}
int ret = GL_TEXTURE_2D;
if (m_extensions.contains("GL_NV_texture_rectangle") && rects)
ret = GL_TEXTURE_RECTANGLE_NV;
else if (m_extensions.contains("GL_ARB_texture_rectangle") && rects)
ret = GL_TEXTURE_RECTANGLE_ARB;
else if (m_extensions.contains("GL_EXT_texture_rectangle") && rects)
ret = GL_TEXTURE_RECTANGLE_EXT;
rect = (ret != GL_TEXTURE_2D);
return ret;
}
bool MythRenderOpenGL::IsRectTexture(uint type)
{
if (type == GL_TEXTURE_RECTANGLE_NV || type == GL_TEXTURE_RECTANGLE_ARB ||
type == GL_TEXTURE_RECTANGLE_EXT)
return true;
return false;
}
uint MythRenderOpenGL::CreateTexture(QSize act_size, bool use_pbo,
uint type, uint data_type,
uint data_fmt, uint internal_fmt,
uint filter, uint wrap)
{
if (!type)
type = m_default_texture_type;
QSize tot_size = GetTextureSize(type, act_size);
makeCurrent();
EnableTextures(0, type);
GLuint tex;
glGenTextures(1, &tex);
glBindTexture(type, tex);
if (tex)
{
MythGLTexture texture;
texture.m_type = type;
texture.m_data_type = data_type;
texture.m_data_fmt = data_fmt;
texture.m_internal_fmt = internal_fmt;
texture.m_size = tot_size;
texture.m_act_size = act_size;
texture.m_data_size = GetBufferSize(act_size, data_fmt, data_type);
m_textures.insert(tex, texture);
if (ClearTexture(tex) && m_textures[tex].m_data_size)
{
SetTextureFilters(tex, filter, wrap);
if (use_pbo)
m_textures[tex].m_pbo = CreatePBO(tex);
if (m_exts_used & kGLExtVBO)
m_textures[tex].m_vbo = CreateVBO();
}
else
{
DeleteTexture(tex);
tex = 0;
}
}
Flush(true);
doneCurrent();
return tex;
}
QSize MythRenderOpenGL::GetTextureSize(uint type, const QSize &size)
{
if (IsRectTexture(type))
return size;
int w = 64;
int h = 64;
while (w < size.width())
{
w *= 2;
}
while (h < size.height())
{
h *= 2;
}
return QSize(w, h);
}
QSize MythRenderOpenGL::GetTextureSize(uint tex)
{
if (!m_textures.contains(tex))
return QSize();
return m_textures[tex].m_size;
}
int MythRenderOpenGL::GetTextureDataSize(uint tex)
{
if (!m_textures.contains(tex))
return 0;
return m_textures[tex].m_data_size;
}
void MythRenderOpenGL::SetTextureFilters(uint tex, uint filt, uint wrap)
{
if (!m_textures.contains(tex))
return;
bool mipmaps = (m_exts_used & kGLMipMaps) &&
!IsRectTexture(m_textures[tex].m_type);
if (filt == GL_LINEAR_MIPMAP_LINEAR && !mipmaps)
filt = GL_LINEAR;
makeCurrent();
EnableTextures(tex);
m_textures[tex].m_filter = filt;
m_textures[tex].m_wrap = wrap;
uint type = m_textures[tex].m_type;
glBindTexture(type, tex);
uint mag_filt = filt;
if (filt == GL_LINEAR_MIPMAP_LINEAR)
{
mag_filt = GL_LINEAR;
glHint(GL_GENERATE_MIPMAP_HINT_SGIS, GL_NICEST);
glTexParameteri(type, GL_GENERATE_MIPMAP_SGIS, GL_TRUE);
}
glTexParameteri(type, GL_TEXTURE_MIN_FILTER, filt);
glTexParameteri(type, GL_TEXTURE_MAG_FILTER, mag_filt);
glTexParameteri(type, GL_TEXTURE_WRAP_S, wrap);
if (type != GL_TEXTURE_1D)
glTexParameteri(type, GL_TEXTURE_WRAP_T, wrap);
doneCurrent();
}
void MythRenderOpenGL::ActiveTexture(int active_tex)
{
if (!(m_exts_used & kGLMultiTex))
return;
makeCurrent();
if (m_active_tex != active_tex)
{
m_glActiveTexture(active_tex);
m_active_tex = active_tex;
}
doneCurrent();
}
void MythRenderOpenGL::StoreBicubicWeights(float x, float *dst)
{
float w0 = (((-1 * x + 3) * x - 3) * x + 1) / 6;
float w1 = ((( 3 * x - 6) * x + 0) * x + 4) / 6;
float w2 = (((-3 * x + 3) * x + 3) * x + 1) / 6;
float w3 = ((( 1 * x + 0) * x + 0) * x + 0) / 6;
*dst++ = 1 + x - w1 / (w0 + w1);
*dst++ = 1 - x + w3 / (w2 + w3);
*dst++ = w0 + w1;
*dst++ = 0;
}
void MythRenderOpenGL::EnableTextures(uint tex, uint tex_type)
{
if (tex && !m_textures.contains(tex))
return;
makeCurrent();
int type = tex ? m_textures[tex].m_type : tex_type;
if (type != m_active_tex_type)
{
if (m_active_tex_type)
glDisable(m_active_tex_type);
glEnable(type);
m_active_tex_type = type;
}
doneCurrent();
}
void MythRenderOpenGL::DisableTextures(void)
{
if (!m_active_tex_type)
return;
makeCurrent();
glDisable(m_active_tex_type);
m_active_tex_type = 0;
doneCurrent();
}
void MythRenderOpenGL::DeleteTexture(uint tex)
{
if (!m_textures.contains(tex))
return;
makeCurrent();
GLuint gltex = tex;
glDeleteTextures(1, &gltex);
if (m_textures[tex].m_data)
delete m_textures[tex].m_data;
if (m_textures[tex].m_pbo)
m_glDeleteBuffers(1, &(m_textures[tex].m_pbo));
if (m_textures[tex].m_vbo)
m_glDeleteBuffers(1, &(m_textures[tex].m_vbo));
m_textures.remove(tex);
Flush(true);
doneCurrent();
}
bool MythRenderOpenGL::CreateFrameBuffer(uint &fb, uint tex)
{
if (!(m_exts_used & kGLExtFBufObj))
return false;
if (!m_textures.contains(tex))
return false;
QSize size = m_textures[tex].m_size;
GLuint glfb;
makeCurrent();
glCheck();
EnableTextures(tex);
QRect tmp_viewport = m_viewport;
glViewport(0, 0, size.width(), size.height());
m_glGenFramebuffers(1, &glfb);
m_glBindFramebuffer(GL_FRAMEBUFFER, glfb);
glBindTexture(m_textures[tex].m_type, tex);
glTexImage2D(m_textures[tex].m_type, 0, m_textures[tex].m_internal_fmt,
(GLint) size.width(), (GLint) size.height(), 0,
m_textures[tex].m_data_fmt, m_textures[tex].m_data_type, NULL);
m_glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
m_textures[tex].m_type, tex, 0);
GLenum status;
status = m_glCheckFramebufferStatus(GL_FRAMEBUFFER);
m_glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(tmp_viewport.left(), tmp_viewport.top(),
tmp_viewport.width(), tmp_viewport.height());
bool success = false;
switch (status)
{
case GL_FRAMEBUFFER_COMPLETE:
VERBOSE(VB_PLAYBACK, LOC +
QString("Created frame buffer object (%1x%2).")
.arg(size.width()).arg(size.height()));
success = true;
break;
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
VERBOSE(VB_PLAYBACK, LOC + "Frame buffer incomplete_ATTACHMENT");
break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
VERBOSE(VB_PLAYBACK, LOC +
"Frame buffer incomplete_MISSING_ATTACHMENT");
break;
case GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT:
VERBOSE(VB_PLAYBACK, LOC +
"Frame buffer incomplete_DUPLICATE_ATTACHMENT");
break;
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
VERBOSE(VB_PLAYBACK, LOC +
"Frame buffer incomplete_DIMENSIONS");
break;
case GL_FRAMEBUFFER_INCOMPLETE_FORMATS:
VERBOSE(VB_PLAYBACK, LOC +
"Frame buffer incomplete_FORMATS");
break;
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
VERBOSE(VB_PLAYBACK, LOC +
"Frame buffer incomplete_DRAW_BUFFER");
break;
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
VERBOSE(VB_PLAYBACK, LOC +
"Frame buffer incomplete_READ_BUFFER");
break;
case GL_FRAMEBUFFER_UNSUPPORTED:
VERBOSE(VB_PLAYBACK, LOC + "Frame buffer unsupported.");
break;
default:
VERBOSE(VB_PLAYBACK, LOC +
QString("Unknown frame buffer error %1.").arg(status));
}
if (success)
m_framebuffers.push_back(glfb);
else
m_glDeleteFramebuffers(1, &glfb);
Flush(true);
glCheck();
doneCurrent();
fb = glfb;
return success;
}
void MythRenderOpenGL::DeleteFrameBuffer(uint fb)
{
if (!m_framebuffers.contains(fb))
return;
makeCurrent();
QVector<GLuint>::iterator it;
for (it = m_framebuffers.begin(); it != m_framebuffers.end(); ++it)
{
if (*it == fb)
{
m_glDeleteFramebuffers(1, &(*it));
m_framebuffers.erase(it);
break;
}
}
Flush(true);
doneCurrent();
}
void MythRenderOpenGL::BindFramebuffer(uint fb)
{
if (fb && !m_framebuffers.contains(fb))
return;
if (fb == (uint)m_active_fb)
return;
makeCurrent();
m_glBindFramebuffer(GL_FRAMEBUFFER, fb);
doneCurrent();
m_active_fb = fb;
}
void MythRenderOpenGL::ClearFramebuffer(void)
{
makeCurrent();
glClear(GL_COLOR_BUFFER_BIT);
doneCurrent();
}
void MythRenderOpenGL::DrawBitmap(uint tex, uint target, const QRect *src,
const QRect *dst, uint prog, int alpha,
int red, int green, int blue)
{
if (!tex || !m_textures.contains(tex))
return;
if (target && !m_framebuffers.contains(target))
target = 0;
makeCurrent();
BindFramebuffer(target);
DrawBitmapPriv(tex, src, dst, prog, alpha, red, green, blue);
doneCurrent();
}
void MythRenderOpenGL::DrawBitmap(uint *textures, uint texture_count,
uint target, const QRectF *src,
const QRectF *dst, uint prog)
{
if (!textures || !texture_count)
return;
if (target && !m_framebuffers.contains(target))
target = 0;
makeCurrent();
BindFramebuffer(target);
DrawBitmapPriv(textures, texture_count, src, dst, prog);
doneCurrent();
}
void MythRenderOpenGL::DrawRect(const QRect &area, const QBrush &fillBrush,
const QPen &linePen, int alpha)
{
makeCurrent();
BindFramebuffer(0);
DrawRectPriv(area, fillBrush, linePen, alpha);
doneCurrent();
}
void MythRenderOpenGL::DrawRoundRect(const QRect &area, int cornerRadius,
const QBrush &fillBrush,
const QPen &linePen, int alpha)
{
makeCurrent();
BindFramebuffer(0);
DrawRoundRectPriv(area, cornerRadius, fillBrush, linePen, alpha);
doneCurrent();
}
void MythRenderOpenGL::Init2DState(void)
{
SetBlend(false);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glDisable(GL_CULL_FACE);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
Flush(true);
}
void MythRenderOpenGL::InitProcs(void)
{
m_extensions = (reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS)));
m_glActiveTexture = (MYTH_GLACTIVETEXTUREPROC)
GetProcAddress("glActiveTexture");
m_glMapBuffer = (MYTH_GLMAPBUFFERPROC)
GetProcAddress("glMapBuffer");
m_glBindBuffer = (MYTH_GLBINDBUFFERPROC)
GetProcAddress("glBindBuffer");
m_glGenBuffers = (MYTH_GLGENBUFFERSPROC)
GetProcAddress("glGenBuffers");
m_glBufferData = (MYTH_GLBUFFERDATAPROC)
GetProcAddress("glBufferData");
m_glUnmapBuffer = (MYTH_GLUNMAPBUFFERPROC)
GetProcAddress("glUnmapBuffer");
m_glDeleteBuffers = (MYTH_GLDELETEBUFFERSPROC)
GetProcAddress("glDeleteBuffers");
m_glGenFramebuffers = (MYTH_GLGENFRAMEBUFFERSPROC)
GetProcAddress("glGenFramebuffers");
m_glBindFramebuffer = (MYTH_GLBINDFRAMEBUFFERPROC)
GetProcAddress("glBindFramebuffer");
m_glFramebufferTexture2D = (MYTH_GLFRAMEBUFFERTEXTURE2DPROC)
GetProcAddress("glFramebufferTexture2D");
m_glCheckFramebufferStatus = (MYTH_GLCHECKFRAMEBUFFERSTATUSPROC)
GetProcAddress("glCheckFramebufferStatus");
m_glDeleteFramebuffers = (MYTH_GLDELETEFRAMEBUFFERSPROC)
GetProcAddress("glDeleteFramebuffers");
m_glGenFencesNV = (MYTH_GLGENFENCESNVPROC)
GetProcAddress("glGenFencesNV");
m_glDeleteFencesNV = (MYTH_GLDELETEFENCESNVPROC)
GetProcAddress("glDeleteFencesNV");
m_glSetFenceNV = (MYTH_GLSETFENCENVPROC)
GetProcAddress("glSetFenceNV");
m_glFinishFenceNV = (MYTH_GLFINISHFENCENVPROC)
GetProcAddress("glFinishFenceNV");
m_glGenFencesAPPLE = (MYTH_GLGENFENCESAPPLEPROC)
GetProcAddress("glGenFencesAPPLE");
m_glDeleteFencesAPPLE = (MYTH_GLDELETEFENCESAPPLEPROC)
GetProcAddress("glDeleteFencesAPPLE");
m_glSetFenceAPPLE = (MYTH_GLSETFENCEAPPLEPROC)
GetProcAddress("glSetFenceAPPLE");
m_glFinishFenceAPPLE = (MYTH_GLFINISHFENCEAPPLEPROC)
GetProcAddress("glFinishFenceAPPLE");
}
void* MythRenderOpenGL::GetProcAddress(const QString &proc) const
{
static const QString exts[4] = { "", "ARB", "EXT", "OES" };
void *result;
for (int i = 0; i < 4; i++)
{
result = getProcAddress(proc + exts[i]);
if (result)
break;
}
if (result == NULL)
VERBOSE(VB_EXTRA, LOC + QString("Extension not found: %1").arg(proc));
return result;
}
bool MythRenderOpenGL::InitFeatures(void)
{
static bool multitexture = true;
static bool vertexarrays = true;
static bool framebuffers = true;
static bool pixelbuffers = true;
static bool vertexbuffers = true;
static bool fences = true;
static bool ycbcrtextures = true;
static bool mipmapping = true;
static bool check = true;
if (check)
{
check = false;
multitexture = !getenv("OPENGL_NOMULTITEX");
vertexarrays = !getenv("OPENGL_NOVERTARRAY");
framebuffers = !getenv("OPENGL_NOFBO");
pixelbuffers = !getenv("OPENGL_NOPBO");
vertexbuffers = !getenv("OPENGL_NOVBO");
fences = !getenv("OPENGL_NOFENCE");
ycbcrtextures = !getenv("OPENGL_NOYCBCR");
mipmapping = !getenv("OPENGL_NOMIPMAP");
if (!multitexture)
VERBOSE(VB_GENERAL, LOC + "Disabling multi-texturing.");
if (!vertexarrays)
VERBOSE(VB_GENERAL, LOC + "Disabling Vertex Arrays.");
if (!framebuffers)
VERBOSE(VB_GENERAL, LOC + "Disabling Framebuffer Objects.");
if (!pixelbuffers)
VERBOSE(VB_GENERAL, LOC + "Disabling Pixel Buffer Objects.");
if (!vertexbuffers)
VERBOSE(VB_GENERAL, LOC + "Disabling Vertex Buffer Objects.");
if (!fences)
VERBOSE(VB_GENERAL, LOC + "Disabling fences.");
if (!ycbcrtextures)
VERBOSE(VB_GENERAL, LOC + "Disabling YCbCr textures.");
if (!mipmapping)
VERBOSE(VB_GENERAL, LOC + "Disabling mipmapping.");
}
GLint maxtexsz = 0;
GLint maxunits = 0;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxtexsz);
glGetIntegerv(GL_MAX_TEXTURE_UNITS, &maxunits);
m_max_units = maxunits;
m_max_tex_size = (maxtexsz) ? maxtexsz : 512;
m_extensions = (const char*) glGetString(GL_EXTENSIONS);
bool rects;
m_default_texture_type = GetTextureType(rects);
if (rects)
m_exts_supported += kGLExtRect;
if (m_extensions.contains("GL_ARB_multitexture") &&
m_glActiveTexture && multitexture)
{
m_exts_supported += kGLMultiTex;
if (m_max_units < 3)
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
QString("Insufficient texture units for "
"advanced OpenGL features."));
}
}
else
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
QString("Multi-texturing not supported. "
"Certain OpenGL features will not work"));
}
if (m_extensions.contains("GL_EXT_vertex_array") && vertexarrays)
{
m_exts_supported += kGLVertexArray;
}
else
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
QString("GL_EXT_vertex_array extension not supported. "
"This may not work"));
}
if (m_extensions.contains("GL_EXT_framebuffer_object") &&
m_glGenFramebuffers && m_glBindFramebuffer &&
m_glFramebufferTexture2D && m_glDeleteFramebuffers &&
m_glCheckFramebufferStatus && framebuffers)
m_exts_supported += kGLExtFBufObj;
bool buffer_procs = m_glMapBuffer && m_glBindBuffer &&
m_glGenBuffers && m_glDeleteBuffers &&
m_glBufferData && m_glUnmapBuffer;
if(m_extensions.contains("GL_ARB_pixel_buffer_object")
&& buffer_procs && pixelbuffers)
m_exts_supported += kGLExtPBufObj;
if (m_extensions.contains("GL_ARB_vertex_buffer_object")
&& buffer_procs && vertexbuffers)
m_exts_supported += kGLExtVBO;
if(m_extensions.contains("GL_NV_fence") &&
m_glGenFencesNV && m_glDeleteFencesNV &&
m_glSetFenceNV && m_glFinishFenceNV && fences)
m_exts_supported += kGLNVFence;
if(m_extensions.contains("GL_APPLE_fence") &&
m_glGenFencesAPPLE && m_glDeleteFencesAPPLE &&
m_glSetFenceAPPLE && m_glFinishFenceAPPLE && fences)
m_exts_supported += kGLAppleFence;
if (m_extensions.contains("GL_MESA_ycbcr_texture") && ycbcrtextures)
m_exts_supported += kGLMesaYCbCr;
if (m_extensions.contains("GL_APPLE_rgb_422") && ycbcrtextures)
m_exts_supported += kGLAppleRGB422;
if (m_extensions.contains("GL_APPLE_ycbcr_422") && ycbcrtextures)
m_exts_supported += kGLAppleYCbCr;
if (m_extensions.contains("GL_SGIS_generate_mipmap") && mipmapping)
m_exts_supported += kGLMipMaps;
static bool debugged = false;
if (!debugged)
{
debugged = true;
VERBOSE(VB_GENERAL, LOC + QString("OpenGL vendor : %1")
.arg((const char*) glGetString(GL_VENDOR)));
VERBOSE(VB_GENERAL, LOC + QString("OpenGL renderer: %1")
.arg((const char*) glGetString(GL_RENDERER)));
VERBOSE(VB_GENERAL, LOC + QString("OpenGL version : %1")
.arg((const char*) glGetString(GL_VERSION)));
VERBOSE(VB_GENERAL, LOC + QString("Max texture size: %1 x %2")
.arg(m_max_tex_size).arg(m_max_tex_size));
VERBOSE(VB_GENERAL, LOC + QString("Max texture units: %1")
.arg(m_max_units));
VERBOSE(VB_GENERAL, LOC + QString("Direct rendering: %1")
.arg((this->format().directRendering()) ? "Yes" : "No"));
}
m_exts_used = m_exts_supported;
if (m_exts_used & kGLExtPBufObj)
{
VERBOSE(VB_GENERAL, LOC +
QString("PixelBufferObject support available"));
}
return true;
}
void MythRenderOpenGL::ResetVars(void)
{
m_fence = 0;
m_lock = new QMutex(QMutex::Recursive);
m_lock_level = 0;
m_extensions = QString();
m_exts_supported = kGLFeatNone;
m_exts_used = kGLFeatNone;
m_max_tex_size = 0;
m_max_units = 0;
m_default_texture_type = GL_TEXTURE_2D;
m_viewport = QRect();
m_active_tex = 0;
m_active_tex_type = 0;
m_active_fb = 0;
m_blend = false;
m_background = 0x00000000;
}
void MythRenderOpenGL::ResetProcs(void)
{
m_extensions = QString();
m_glActiveTexture = NULL;
m_glMapBuffer = NULL;
m_glBindBuffer = NULL;
m_glGenBuffers = NULL;
m_glBufferData = NULL;
m_glUnmapBuffer = NULL;
m_glDeleteBuffers = NULL;
m_glGenFramebuffers = NULL;
m_glBindFramebuffer = NULL;
m_glFramebufferTexture2D = NULL;
m_glCheckFramebufferStatus = NULL;
m_glDeleteFramebuffers = NULL;
m_glGenFencesNV = NULL;
m_glDeleteFencesNV = NULL;
m_glSetFenceNV = NULL;
m_glFinishFenceNV = NULL;
m_glGenFencesAPPLE = NULL;
m_glDeleteFencesAPPLE = NULL;
m_glSetFenceAPPLE = NULL;
m_glFinishFenceAPPLE = NULL;
}
uint MythRenderOpenGL::CreatePBO(uint tex)
{
if (!(m_exts_used & kGLExtPBufObj))
return 0;
if (!m_textures.contains(tex))
return 0;
m_glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glTexImage2D(m_textures[tex].m_type, 0, m_textures[tex].m_internal_fmt,
m_textures[tex].m_size.width(),
m_textures[tex].m_size.height(), 0,
m_textures[tex].m_data_fmt, m_textures[tex].m_data_type, NULL);
GLuint tmp_pbo;
m_glGenBuffers(1, &tmp_pbo);
m_glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
Flush(true);
return tmp_pbo;
}
uint MythRenderOpenGL::CreateVBO(void)
{
if (!(m_exts_used & kGLExtVBO))
return 0;
GLuint tmp_vbo;
m_glGenBuffers(1, &tmp_vbo);
return tmp_vbo;
}
void MythRenderOpenGL::DeleteOpenGLResources(void)
{
VERBOSE(VB_GENERAL, LOC + "Deleting OpenGL Resources");
DeleteTextures();
DeleteFrameBuffers();
Flush(true);
if (m_fence)
{
if (m_exts_supported & kGLAppleFence)
m_glDeleteFencesAPPLE(1, &m_fence);
else if(m_exts_supported & kGLNVFence)
m_glDeleteFencesNV(1, &m_fence);
m_fence = 0;
}
Flush(false);
ExpireVertices();
ExpireVBOS();
if (m_cachedVertices.size())
{
VERBOSE(VB_IMPORTANT, LOC_ERR + QString(" %1 unexpired vertices")
.arg(m_cachedVertices.size()));
}
if (m_cachedVBOS.size())
{
VERBOSE(VB_IMPORTANT, LOC_ERR + QString(" %1 unexpired VBOs")
.arg(m_cachedVertices.size()));
}
}